How to use mediacodec in android. mp4 file (optionally blending in an audio stream).

How to use mediacodec in android I use MediaCodec in synchronous manner and render the output to the Surface of decoder and everething works fine except that I have a long latency from a realtime, it takes 1. Data Types Codecs operate on three kinds of data: compressed data, raw audio data and raw video data. You would need to create a second instance of MediaCodec to do the audio encoding, and then combine the streams with the MediaMuxer class (introduced in Android 4. You'll learn how to efficiently enc Android’s MediaCodec class, in conjunction with the Android on Snapdragon vendor extensions, can unlock powerful features for media-rich apps. encoder/decoder components. I'm using MediaCodec to encode video from the camera: MediaFormat format = MediaFormat. As of Marshmallow (API 23), the official documentation is quite detailed and very useful. Each media track can be encoded using one or more distinct codecs. xml and system/etc/media_profiles. so file containing a class that inherits from MediaPlayerInterface, as well as a custom MediaPlayerService implementation to return instances of the custom codec class from the create() factory function for the appropriate file In my app I'm trying to upload some videos that the user picked from gallery. Video decoder is configured using MediaCodec#configure; Surface is an Android Surface (link to API, link to arch. 3 (SDK 18) now allows you to use a Surface as the input to an Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company The only API which android has is MediaCodec API, but it is faster than FFmpeg because it uses the device hardware for video processing. ). With excellent phones and apps, we This document discusses the MediaPlayer APIs in the Android multimedia framework. Conclusion. I have tested these images on a SurfaceView (playing them in series) and I can see them fine. Games Camera & Media Build AI-powered Android apps with Gemini APIs and more. Media Pack uses standard Android SDK like MediaCodec, MediaExtractor and MediaMuxer etc. Use SurfaceTexture. MediaCodec is generally used like this: codec. CodecProfileLevel. You can take a look at DecodeEditEncode, a great starting point for decoding and re-encoding using surfaces (output surface for decoder -> input surface for encoder). I want to get the images from CameraX (Preview Use case) and encode them as h. I want to compress a high resolution video to low MediaPack is like SDK library, you can use it in your app, for your convince it has a sample code which shows how to use it. Is there a way to embed VLC media player to Android Application? I have several issues: 1) I have a video streaming Camera (from RTSP) and I cannot play its stream on my regular videoview panel (S Refer to Supported media formats for documentation on sample formats supported by Android devices. getTrackFormat(i); decoder = MediaCodec. I can create the Surface using MediaCodec. However, I need to change the image from the camera. Truncate video with MediaCodec. I understand that one way is to compile and use FFmpeg but I'd rather use a built in method that can use HW acceleration. For an example of a MediaCodec-based video player that controls the playback rate, You can try out adding your codec through openMAX IL layer then call up the android media player to play it(I believe vlc has done in this way but uses its own player). Notice that you never touch more than one element in inputs[] at a time, and you're only I have written an Android. Only one MediaCodec instance can't do that. I try to change bitrate to 800 kbps, the output video quality improves a lot, and if I change bitrate Using Android's MediaCodec API, I can get a list of codecs registered in the system. Encoding a video with MediaCodec on Android. You can find a collection of useful examples on the bigflake site. very poor quality of audio recorded on my droidx using MediaRecorder, why? 0. getString(MediaFormat. I resolved this by only feeding MediaCodec a new frame after I had decoded the prior frame to a Bitmap. This returns a MediaCodecInfo object which provides details about the codec component being used. The h264 stream comes from a server that is running an openGL scene. I need to send Voice message, but PCM audio is too large, so I'm trying to convert PCM to AMR-NB using MediaCodec. I am looking for some API which I can use to query list of available video codecs and then figure out which one to use. 264 file and feed them to MediaCodec for decoding. You can also open exe files similarly. Hot Network Questions Why did the sw- in PIE *swenh₂ (to sound) change to zv- in Proto-Slavic *zvoniti (to ring), but sw- in *swéḱs (six) changed to š- in *šȅstь? 🚀 Adding OpenCV to Your Kotlin Android Project: A Comprehensive Step-by-Step Guide 📸 I want to do tone-mapping of HDR10 on Android use OpenGL ES, the first thing is to get the frame data. Stagefright also supports integration with custom hardware codecs provided as OpenMAX component. configure(format, ); configure method accepts 3 other arguments, apart from MediaFormat. 3 onward. I have a lot of probl I initially tried How to play raw NAL units in Andoid exoplayer? but I noticed I'm gonna have to do things in low level. createAudioFormat() to create the format object to pass to MediaCodec. ) I tried using the MediaFormat. The MediaSession2 and MediaParser APIs can't be customized (but you can upstream changes for the legacy MediaPlayer and MediaSession APIs). 3 (API 18) provides an easy solution. If you are having an elementary stream file, then you would need to parse the file, identify NALU headers and extract the content. 3. I'm trying to write a video compressor application for android phones that runs on jellybean version. webrtc. 264 video from camera, the problem is, when I move my phone, the output video's quality is very pool, full of mosaic/visual blocks in the video. MP4 file decoding works fine, the frames can be seen on the device. The problem is that usually the android video files are too big to upload and so- we want to compress them first by lower bitrate/ resolution. Nvidia. com/google/grafika. If you need a lighter solution, you have to encode your image with MediaCodec, and extract the audio from the . MediaCodec is a low-level API in Android used for encoding and decoding audio and video data. mp3 first. If you want to receive packets from some other source that the system itself doesn't support, you'll want to use MediaCodec without MediaExtractor. classes\interfaces inside, it just implements the whole data flow, memory management, threading etc. I am using Android MediaCodec to decode an audio file formated in AAC. But it doesnt seem that there is a way to encode audio with video at the same time, no documentation or code about this. Prerequisites: Before we start, we need to set up an environment to run our FFmpeg commands. CamcorderProfile i am developing a media player application in android which uses ffmpeg for decoding which i think is software decoding. I need your help. 1 and 4. remaining() ?: 0 always returns 0. However it is storing a green rectangle instead of the actual frame. e. I don't want to use FFmpeg (because I don't want to use NDK), so I decided to use MediaCodec API. 6. I want to play the raw h264 output of MediaCodec with VLC/ffplay. 1, unfortunately I have not found a way to decode a raw H264 file or stream using these API's. Log; import android. The issue was as I expected and it had to do the with timestamps that were being generated for the Audio track not matching exactly what the video track was giving us. If you e. When you call releaseOutputBuffer() with the "render" flag set, you are telling the system to render the frame as soon as possible. As for many other things in Android, I consider this KEY_I_FRAME_INTERVAL being rather a sort of a "kind recommendation" to the encoder than a strict setting. Many of the examples use features introduced in API 18, such as Surface input I've been rendering video through the MediaCodec directly to a Surface that was taken from a SurfaceView in my UI. I have successfully managed to decode raw h264 content and display the result in two TextureViews. It includes a collection of sample code and answers to A quick overview of Android's MediaCodec API. xml to expose the supported codecs and profiles on the device to app developers via the android. util. I have a few questions to ask you. See Check for HDR playback support for next steps. But is there any restriction on hardware/Android version on encoding multiple videos, Bigflacke has sample code to illustrate how to use MediaCodec Api available in Android 4. Most of it makes use of Android 4. It's an . To support additional media types in the Android media framework, you need to create a custom extractor and I am try to set the profile, such as: MediaCodecInfo. Prior to API 21, you'd do ByteBuffer inputs[] = codec. os. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog For Android 4. ) The safest thing would be to use MediaFormat. While it does not have a "give me a list of supported codecs", it does have createEncoderByType(), where you pass in a MIME type. 1 (SDK 16) required that you provide the media with a ByteBuffer array, but Android 4. All the things I can get from this API are the name, supported media types and whether it is an encoder or decoder. Using the MediaCodec API in android you can call getCodecInfo() once you have chosen an encoder component. It also has a performance improvement since you don't need to write then read the bitmaps from disc. private I am trying to use MediaCodec to save a series of Images, saved as Byte Arrays in a file, to a video file. createByCodecName("OMX. queueInputBuffer(inputBufIndex, 0 /* offset */, sampleSize, presentationTimeUs, sawInputEOS ? MediaCodec. Somebody please guide me on how to realise this. But in Android 9, where YV12 isn't supported, I had to use YUV_420_888 as input image format, and the size of input got increased. The sample goes like this: MediaCodec codec = MediaCodec. Lan Nguyen. I have the SPS and PPS units as well How to use MediaCodec class to decode H. The awesome player, the android default player, just fetch a list of codecs available through openMAX API and if there is a codec, it plays. I'm trying to convert a set of images into an mp4 video. As you can see, it's a thread that plays a file on a surface passed to it. This suggests that the codecs are in firmware and not software codecs like you are used to on the computer. In particular, the ExtractMpegFramesTest demonstrates how to decode a . UDP lets you drop the occasional packet, which will be fatal for a stream with no I-frames, but merely glitchy for a stream with I-frames. I have been given a custom video codec that has been integrated with an Android firmware build. In most cases, GLSurfaceView can make working with On the receiver side, again an android mobile. The Android multimedia framework includes support for capturing and encoding a variety of common audio and video formats. mediacodec doesn't work smoothly. createEncoderByType As far as android 26, MediaCodec class will only accept BITRATE_MODE_CQ for MIMETYPE_AUDIO_FLAC codecs. If you have container format, you will need to have a mechanism to read the file format of the container type and You shouldn't try to fetch all the buffers. For comparison, in OpenGL case an Android Surface is constructed and used like so So essentially, the only change is the MediaCodec feeding frames to SurfaceTexture instead of the Camera. 3 (API 18). You can easily convert your video file using one of the many free online video converters to a format your phone supports. UDP is usually a better choice than TCP for real-time streaming -- one waylaid packet and you'll be frozen waiting for retransmit. 3 (API 18) features, but if you don't need MediaMuxer or Surface input to MediaCodec it'll work on API 16. I searched everywhere, but I can't implement it properly. Create a Small Video Editor App in Android Studio using FFmpeg. Set up HDR playback in your app. offerEncoder(Data)). 552 9115 9224 I Grafika : queueInputBuffer index/pts, 2,0 01-29 14:05:36. The most important th In my Android app, I want to compress mp4 video by changing its resolution, bitrate. To create a new app, use Jetpack Media3 instead of the MediaPlayer APIs. ) OpenGL Comparison. how can you get SPS and PPS values, you need to have a mechanism to read the same from the file. In addition, MediaCodec. For demuxer one extractor is ok, it demuxes file into an audio stream and a video stream. 3 APIs . Let's take the flow step by step. I have debuged my code, then i found outputBuffer?. UPDATE: Creating an audio . 264 stream to a . MediaFormat mediaFormat = extractor. There is some good documentation on this site called big flake about how to use media muxer and mediacodec to encode then decode video as mp4, or extract video then encode it again and more stuff. Within the View's onDraw, use the Canvas returned by Surface. createDecoderByType(mediaFormat. How can I trim a video from Uri, including files that `mp4parser` library can handle, but using Android's framework instead? I'm using MediaCodec to encode H. Audio support. MediaCodec class can be used to access low-level media codec, i. xml can be found here. The main purpose of mediacodec class is to access the underlying hardware and software codec in the device. From Android 4. like here about samsung device and here about Qualcomm Snapdragon series problem solved 1. At the moment, I plan on working as follows. In this video, we dive into the powerful capabilities of MediaCodec, a crucial component for video processing on Android. AVCProfileBaseline The code snippet like this: MediaFormat format = MediaFormat. And the bigflake is also good reference for Save and categorize content based on your preferences. Any suggestion or advice will be very helpful as there is no proper documentation available for these new APIs. You want to create a new video, with the overlay as part of the video image, and save the video. Improve this question. When playing back I'm using MediaCodec to read a video file and store the frames on SD card. But how can I figure out whether a codec supports hardware-acceleration? android; I tried setDataSource() in MediaExtractor class but it doesn't work with RTSP path. I have created a encoder class very similar to (Encoding H. You can do that with FFMPEG, or you might want to consider sophisticated Android tools such as the MediaCodec. There are examples of using MediaMuxer on bigflake, but at the time I'm writing this there isn't one that demonstrates Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company For other formats that are not declared, the platform decides whether to transcode or not. Most apps don't need to know anything about EGL to use GLES with GLSurfaceView. Learn to build for your use case by following Google's prescriptive and opinionated guidance. The state is cleaned up automatically when the activity pauses. I am trying to display video buffers on an android. The MediaCodec encoder generates the raw AAC stream. For example, GLSurfaceView creates a thread for rendering and configures an EGL context there. Format Encoder Decoder You can probably work around this by scaling your timestamps. I want to compare the difference between "bitrate-mode" of Android MediaCodec, my test workflow is: Use MediaExtractor to extract H. The MediaCodec encodes the video with H264 and writes the result to another buffer. As I have Search on the web, I have found a few ways to perform hardware-accelerated video decoding on Android. It might be easier to use MediaPlayer instead. 264 video frames from a mp4 file (a 100 seconds clip from video), it's in 1280*720 size; Use MediaCodec decoder to You don't need to use a GLSurfaceView to use GLES. I think Android doesn't have any RTSP API I could use nor I can find any RTSP libraries for Android. However, the recommended approach for media is Jetpack Media3, which includes ExoPlayer. If your app uses ExoPlayer, it supports HDR playback by default. MIMETYPE_VIDEO_HEVC video mine type. (It's raw AAC. 0, the use of flexible YUV420 color formats is promising. The only way I found to access the The problem is if MediaCodec decodes frames faster than you can convert them, you'll drop frames. HandlerThread; import android. 264 stream, modifying the frames with a GLES shader. mp4 with a single frame should be the easiest in FFMPEG. Belows are some details: My encoder bitrate is 500 kbps, and bitrate-mode is BITRATE_MODE_VBR. Is we need to create a new project and add this code which extending AndroidTestCase instead of Activity. I have looked at many examples using MediaCodec, and here is what I understand (please correct me if I am wrong):. dequeueInputBuffer() would return a buffer index, and you'd use inputs[index], and finally submit the buffer with codec. Recently started toying around with the Android Media Codec class to render the video frames from a Native C++ application. So to have only a single camera capture session that allows multiple video recordings, creating a MediaCodec instance after configuring the capture session is required. As a test, I want to render to the Surface (as in above) and loopback through a different instance of MediaCodec configured as an encoder. There are many examples for doing this in Synchronous Mode on sites such as Big Flake, Google's Grafika, and dozens of answers on StackOverflow, but none of them support In Android Framework, mediacodec is implemented as Stagefright, a media playback engine at the native level that has built-in software-based codecs for popular media formats. I'm having some problems with the video created, and I'm not sure if my code is correct to create a valid mp4 video. I'm trying to figure out how to use Android's MediaCodec class to decode H. With this class, I created an instance of AudioRecord and tell it to read off its byte[] data to the AudioEncoder (audioEncoder. But if try to re-encode to a new MP4 file with MediaMuxer, the output file size is zero, because SurfaceTexture. – MediaCodec Video Decoder ⇨ Surface ⇨ texture ⇨ Vulkan Details. I have finished the process of decoding and getting the raw video output buffer,but when I queue the raw output buffer to the input buffer of the encoder, it throws an overflow exception. In the test code, the frames are rendered to an off-screen pbuffer and then saved as n00b here (first Android project). Programmatically how to create Video in android. Handler; import android. 7 In the EncodeDecodeTest code, the PTS is generated by computePresentationTime(), passed to the encoder through queueInputBuffer() or eglPresentationTime(), received with the output buffer in BufferInfo, passed to the decoder with the input buffer with queueInputBuffer(), and then received with the output in the BufferInfo. Video decoder Configure using MediaCodec. Android 4. The Stagefright service parses the system/etc/media_codecs. The scene has a camera and hence is responsive to user input. But, absent any current Android hardware support for HEVC, HD content playback is too jittery. How to Combine audio and Video in android. setDefaultBufferSize(int width, int height) to make sure you have enough space on the texture for the view to render. getOutputImage(). In Android SF framework, the codecs are registered through media_codecs. MediaCodec is somewhat unstable until 4. setInteger Regarding Android's Mediacodec speed concerns and bottlenecks. webrtc; import android. 0 Lollipop). Right now I'm letting android decode the video frame by providing a Surface to the Configure call of the MediaCodec object and calling releaseOutputBuffer with the render flag set to true. First, my previous assumption that the Android MediaCodec encoder generates the elementary AAC stream was not accurate. How to generate the AAC ADTS elementary stream with Android MediaCodec. Developer Is it possible to reuse these two android java class to implement a timestamp video recorder? I try to use OutputSurface as Camera preview output and use InputSurface as MediaCodec Encoder input but sounds like only record 2 or 3 frames then it I think you're seeing some effects unique to the first frame. Creating video from Frames in Android. I can use the same path with MediaPlayer class and it works but it is very important for me to use MediaCodec class instead. It includes a collection of sample code and answers to frequently-asked questions. Create a Surface constructed with the above SurfaceTexture. xml. getTimestamp() returns always 0. How to set the Android MediaCodec profile? 3. I inherit a class from Preview. Jelly Bean offers a MediaCodec class. . 562 9115 9224 I Grafika : queueInputBuffer I'm working to decode a video file and then encode to a smaller size/bit rate video file. I considered configuring MediaCodec to use a Surface, call MediaCodec. 1) the best way of video encoding is use Android Media Codec API. -> MediaMuxer for generate mp4 file I need to use MediaCodec as video encoding is done with MediaCodec. The EncodeDecodeTest tests exercise the functions you're asking about, and as a result you can reliably feed YUV data to a 4. media. 264 profile when encoding video in Android using MediaCodec API. Set AVC/H. The MediaCodec class first became available in Android 4. I am posting my solution here, hoping it could help others. The solution would look something like the ExtractMpegFramesTest, in which MediaCodec is used to generate "external" textures from video frames. If the minimum version of you application Android SDK is greater or equal to 16 (Android 4. 7. Input data in H. Jointly with getOutputImage for decoding and getInputImage for encoding, Image objects can be used as format retrieved from a decoding MediaCodec. 10. h264. I want to get frame rate of video, but i don't want to use FFMPEG,JAVACV lib. g. If your app does not use ExoPlayer, set up HDR playback using MediaCodec via SurfaceView. As a result, the behavior of MediaCodec across different devices was inconsistent, and a few bugs went unnoticed. This answer is late and opinion-based, but may be helpful. lockCanvas to do the view drawing. When configuring codec, if you manually create MediaFormat objUTF-8 I'm new to android development. (Not old in the "well supported and reliable" way but in the "old, untested and possibly broken" way. There are maybe hundreds of hardware encoder implementations behind this API, and some more "rigid" and likely old ones may not The video codecs are limited to what is supported by the device. But I can't find anything in the MediaRecorder docs. Android mediacodec: Is it possible to encode audio and video at the same time using mediacodec and muxer? 1. Is there a way to ask an Android device what audio and video Codecs it supports for encoding? I really wish there were, but there is not, at least through ICS. (The overlay would simply be a normal raster image, i. It provides access to hardware-accelerated codecs, allowing developers to MediaCodec class can be used to access low-level media codec, i. 3+ device (though That's a very old format. Assuming the output is YUV, you could then use libyuv to convert to ARGB. 5. i want to unpack this stream and decode it and render it on the receiver side using android mediacodec API. Then index = codec. view. In Android4. I see: 01-29 14:05:36. 1. Next, we call MediaCodec codec for shortH. When encoding video, Android 4. setSurfaceProvider(). In addition to Android's platform decoders, ExoPlayer can also make use of software decoder extensions. How to use startTime and endTime for the trim video in MediaController (MediaCodec)? 17. You may need to go through some documentation of FFMPEG android, I used this library to add water mark to a video splitting the video in frames and then adding water mark to it. Use OpenMax on specific hardware platform. This behavior might change for new formats in the future. The mediacodec's official document said:. 264 video. 264 format, output frame data and send it to the listener. mk under myDecoder folder that i have added and placed the source code of my decoder and the compilation is successful and i'm able to run it in an emulator. Take a look especially at this method. I am now attempting to use MediaCodec as an encoder. This works great. Another possible solution is use MediaCodec. mp4 file (optionally blending in an audio stream). This document shows you how to use MediaRecorder to write an application that captures audio from a device microphone, save the audio, and play it back -> MediaExtractor to extract encoded media data from a mp4 file. The images for video is bitmap files that can be ARGB888 or YUV420 (my choice). Here is the code: int outIndex = decoder. setPreviewDisplay() takes a SurfaceHolder, not a Surface. Android Change Resolution of Video File. To start, I'm trying to manually parse the NAL units out of an H. The data that was previously passed to the decoder is incorrect. I believe I'm parsing the NAL units out of the file correctly I'm using Android MediaCodec encoder, and here is some code where I configure the encoder: mediaCodec = MediaCodec. Configure the decoder's csd-0 csd-1 2. createVideoFormat("video/avc", 1920, 1080); mediaFormat. 264 Video using MediaCodec. You can use it to discover, configure, and adjust your app’s capabilities based I think you can have a look at the grafika project, it has all the sample codes for mediacodec. This document describes the media codec, container, and network protocol support provided by the Android platform. SurfaceProvider then inside that Transformer is compatible with Android 5. I have been successful in decoding H264 wrapped in an mp4 container using the new MediaCodec and MediaExtractor API in android 4. Update: There's now a bunch of sample code here. audio. Since Android 5. Getting the raw packets using a socket and parsing the received data to NAL units. std::vector &lt;AVHWDeviceType&gt; GetSupportHwDeviceType () { unsigned int idx {}; std:: Ok, I have achieved the ultimate goal of the original poster finally. All three kinds of data can be processed using ByteBuffers, but you should use a Surface I know MediaCodec has its own surface, which can be used if I set KEY_COLOR_FORMAT option of a MediaCodec object to COLOR_FormatSurface. The API is implemented on top of MediaCodec for hardware-accelerated video decoding and encoding, and OpenGL for graphical modifications. I repeated your experiment, with the further addition of forcing doRender = false around line 244 to avoid the sleep calls used to manage the output frame rate. Follow edited Dec 4, 2015 at 7:41. createVideoFormat("video/avc", width, height); format. dequeueOutputBuffer() repeatedly, save the resulting buffer indices, and then later call MediaCodec. 1 (API 16). Say you have a 20 second video (perhaps taken with the device camera) and you want to add an overlay in to the video. There is also a new MediaMuxer class that will convert your raw H. You can use the MediaRecorder APIs if supported by the device hardware. 5-2 seconds and I'm very confused why is it so. And with Camera2 API, I don't need to write any data by myself to the MediaCodec object. is that possible to get frame rate of video in android? I read KEY_FRAME_RATE it's says that,"Specifically, MediaExtractor provides an integer value corresponding to the frame rate information of the track if specified and non-zero. Here's one way I retrieve the video-encoder: videoCodec = MediaCodec. getWidt And then this sampleSize is used in . I am trying to decode a video from a file and encode it into a different format with MediaCodec in the new Asynchronous Mode supported in API Level 21 and up (Android OS 5. But how to do it using MediaCodec object? The current Android4. When MediaCodec::init is invoked, it internally instructs the underlying ACodec to allocate the OMX component through mCodec->initiateAllocateComponent. You need two EGL contexts, one for the video output, one for GLSurfaceView; you want to create the former while the latter is current, and pass eglGetCurrentContext() to Again, I have a question as regards Android's MediaCodec class. 9. 3+). Use ffmpeg libstagefright (overview of libstagefright) or use libstagefright in the OS directly, like here. getOutputBuffers(); while (true) { int MediaCodec Class. Now, I have read that the new MediaCodec API in android allows us to access and use the codecs available in android source. MediaCodec; import android. 3, API 18). com. The camera writes its video into a buffer. MIMETYPE_VIDEO_AVC which is the one that gets the most testing, both by the Android compatibility testsuite and by third party applications. PS: I am using camera2 API For this purpose you can use a library called FFMPEG Android It takes params as command lines and processed any video and audio. Lan Nguyen Lan Nguyen. " but i don't know how to use it? I have a screen recording app that uses a MediaCodec encoder to encode the video frames. Samples PRODUCT_PACKAGES += \ libstagefrighthw \ Expose codecs to the framework. BUFFER_FLAG_END_OF_STREAM : 0); So what are the "access units" for MP3 and AAC ? Are they fixed size chunks ? Can they be somehow read from the MP3/AAC stream ? As far as I've tested/understood, you can only use a MediaCodec instance once. You can include video and audio tracks in MOV files, but this format is unique because it can hold files with different encodings and synchronize them. I have modified the code provided by abalta to accept bitmaps in realtime (ie you don't already need to have the bitmaps saved to disc). 0. 2. createVideoFormat(MIME_TYPE, config. I'm currently writing an android app where I need to cache video-frames so that I can easily go back and forth with little to no delay. 4. releaseOutputBuffer(desired_index, true), but there doesn't seem to be a way to increase the number of output buffers, so I might run out of output buffers if I'm dealing with This page is about the Android MediaCodec class, which can be used to encode and decode audio and video data. How to decode H264 over RTP using MediaCodec Api in Android. The following is the initial setup t I finally generated AAC files that are playable on both the Android device and the Windows host computer. The MediaCodec API is pretty low-level, and there's not a lot of sample code available. If Android MediaCodec codec usageUse MediaCodec for encoding and decoding. 264 configurationCreate and configure codec. Note: My app is targeting to API 18+ (Android 4. To play a MOV file on Android, you only need an application that can recognize the precise codec(s) used in the file. I can just drain the output buffer. How can I achieve this ? What I was trying was, to use the Surface returned from MediaCodec. I am trying to record audio in android using media recorder . Codec Registration. There is some devices like Huawei Mate 9 and Nexus 6p that have hardware for HEVC encoding/decoding. AudioDeviceModule; I'm making an app that uses FFmpeg on Android to show the screen. Using the MediaExtractor class this is usually done by. Now that you know the solution to the Android issue with unsupported video codec formats, you can easily convert the video by following the steps. The MediaCodec class now accepts input from Surfaces, which means you can connect the camera's Surface preview to the encoder and bypass all the weird YUV format issues. codec. it doesn't play high resolution videos smoothly so i would like to switch to hardware decoding. On Android after video decoded by mediacodec, its data is on an external oes texture, I want to know what the internal format of the texture is when decoding hdr10 video. I'm tryint to change this class BigFlake - CameraToMpegTest to encode using MediaFormat. I am using the media codec API released in Android 4. mExtractor = new MediaExtractor(); mExtractor. Is there a relatively easy way of feeding video stream from I'm working with Android MediaCodec and use it for a realtime H264 encoding and decoding frames from camera. pipeline inside in most optimal way to get rid developer of thinking about all such stuff. private void editVideoData(VideoChunks inputData, MediaCodec decoder, OutputSurface outputSurface, InputSurface inputSurface, MediaCodec encoder, Don't know how but when I am trying in Android 7, with YV12 image format as input and COLOR_FormatYUV420SemiPlanar as output, it gives me equal size of input image and input buffer. Google CTS DecodeEditEncodeTest does exactly the same and can be used as a reference in order to make the learning curve smoother. The MediaPlayer APIs in the Android multimedia framework support playing a variety of common That's why I would like to make use of the recent low-level additions to the framework, being MediaCodec, MediaExtractor, etc. encoder"); mediaFormat = MediaFormat. Here are my l To your last question i. Using SurfaceTexture to catch the Camera preview, the frame is available as an "external texture" that can be used as the image source. mp4 file to Bitmap, and the DecodeEditEncodeTest decodes and re-encodes an H. But I have no success. It is commonly used with other components like MediaExtractor, MediaSync, how can I convert images to video without using FFmpeg or JCodec, only with android MediaCodec. -> MediaCodec (Decoder): Decode each frame for later processing. To register your video decoder, you would have to add a new entry under <Decoders> list. android; Share. As an application developer, you are free to make use of any media codec that is available on any Android-powered device, including those provided by the Android platform and those that are device-specific. I have referred Grafika for video encoding. setInteger . I'm a bit new when it comes to MediaCodec (and video encoding/decoding in general), so correct me if anything I say here is wrong. queueInputBuffer(index, ). For the next recording you have to create a new one. 2 SDK seems not support it. This means you will probably need to use Where a specific Android platform is specified, the format is available on handsets and tablets running that version and all later versions. Note: HDR playback has limited support on TextureView in Android 13 (API layer 33) and higher. MediaCodecInfo; import android. Surface; import org. getInputBuffers(). MediaCodec::CreateByType will create a new MediaCodec object. getCapabilitiesForType() returns a CodecCapabilities object, detailing what the codec is capable of. Hi i have android project that i have to receive audio and video from server via socket, How to use MediaCodec class to decode H. KEY_MIME)); I am trying to encode aac audio using android AudioRecord and MediaCodec. multiply the timestamps by 2 when inputting them into the encoder, and then divide by 2 on the timestamps you get on the output buffers from the encoder, you should be able to get an I-frame interval of half a second. createInputSurface() in Preview. 0 Lollipop (API level 21) and higher, and includes workarounds to get more consistent behavior across Android versions and different devices. Without Surface input, you'll need to do it in software. 640p and lower resolutions play fine - though maybe not in You can extend the media extractor and media codec components using vendor extensions. As I understand it, the way to use the MediaCodec is like this (decoder example in pseudo code): //---- Ideally I'd like to accomplish two goals: Pass the Camera preview data to a MediaCodec encoder via a Surface. Get InputBuffers from MediaCodec object -> fill Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I'm decoding a raw h264 received from a wifi cam on android. Here is the link to bigflake. Inside it uses MediaCodec so works fast – Marlon. 264 from camera with Android MediaCodec). MediaCodec constructor would create a new ACodec object and store it as mCodec. Performance Points A performance point represents a codec's ability to render video at a specific height, width and frame rate. createDecoderByType(type); codec. https://github. Below is the new code： public void drainEncoder() { final int TIMEOUT_USEC = 0; // no timeout -- check for buffers, bail if none int pos = 0; ByteBuffer[] encoderOutputBuffers = mEncoder. I am reading the Android documents about MediaCodec and other online tutorials/examples. Notice the lines. its a RTP stream that contains H264 Dynamic Payload. setDataSource(filePath); You can use one extractor but two MediaCodec instances for audio and video playback. How to mix audio and video of different lengths using android MediaMuxer. 2, you need to use the MediaCodecList class to iterate through the available codecs - there you'll get the MediaCodecInfo that will provide the same information as getCodecInfo() does. In Android 12 transcoding is disabled for all undeclared formats. I have an Android MediaCodec decoder configured with a Surface from a SurfaceTexture object. I recording audio with class audoiRecord. Please correct me if I am wrong. writing custom codecs for android using FFmpeg. MediaCodecList and android. I've found this simple MediaCodec example. When decoding video with MediaCodec, you are not the one setting the PTS, you are the one receiving the PTS. I'm not sure what you mean by textureSurface. All audio-visual components are registered as OMX components. createInputSurface() but the Camera. I convert *raw file to wav next way: private void copyWaveFile(String inFilename,String outFilename){ Might also want to look at the MX Player, which plays HEVC on my Nexus 7. The only case where getCodecInfo() (or getName()) is needed if you've created the codec using createEncoderByType (or createDecoderByType) in package org. Note that individual devices may support additional formats beyond those listed. configure(format, ); MediaCodec is a component in Android used for accessing the underlying encoders and decoders. To start from the very basics, as fadden pointed out use Android graphics tutorials The problem in a nutshell: there were no CTS tests for video encoding until Android 4. 1, a key frame is often requested in a real-time encoding application. it work fines for 3gp audios, but when i try the same code with aac format it fails . thank you. To decode the AAC data I want to create and configure an instance of MediaCodec. It seems MediaCodec is hard to use and not popular. Now I want convert audio raw file to *flac format. ; In addition to passing the Camera preview data to the encoder, I'd also like to If I'm to subclass SimpleExoPlayer, since the use of MediaCodecSelector. DEFAULT is hardcoded into buildVideoRenderers() of SimpleExoPlayer, I'm thinking to override buildVideoRenderers(), however I don't have access to the private properties, and even if I had it will end up with duplicated code. But the alway output a 0 bytes decodeFile. i got the RTP packets successfulyy. Is it possible to use two Android MediaCodec instances as video encoder to encode two videos simultaneously? I know that MediaCodec itself can have multiple instances, for video/audio encoding/decoding. A given instance of MediaCodec will encode either video or audio. I got decoding working using getOutputImage and could visualize the result after RGB conversion. MediaFormat; import android. getCanonicalName() returns the underlying codec name for codecs created via an alias. an Android Image (). Was able to successfully decode and render both audio and video streams using Android MediaCodec class using synchronous approach[queueInputBuffer and deququeInputBuffer]. if you use a MediaCodec directly, you can access any of the available media formats regardless of the supported file types and container formats. In standard android distribution, an example media_codecs. Android MediaCodec How to Frame Accurately Trim Audio. -> MediaCodec (Encoder): At this point, I guess that's where we should establish MediaFormat parameters such as video resolution, which should help us to reduce the final size of the mp4 file. My question how to run this file to test this code. Likewise, if you want to record something else than the camera, or write the output somewhere else than to a file that MediaRecorder supports, you'll want to use MediaCodec directly instead of MediaRecorder. MediaMuxer; import android. It's your responsibility to pace the frames. But audio and video streams should use different decoders, like audio AAC, video AVC etc This is my first question so please let me know if I missed anything! Using Android API 16's new Media Codec implementation to try and decode a video so that I can send frames to be applied as a texture (the texture part is already done). How MOV Extension Works. 795 5 5 How to decode H264 over RTP using MediaCodec Api in Android. What they are, how to find out about device support and some general usage tips when integrating within your application. Builder() by using the Preview. configure(), but I kept getting errors when using AAC (audio/mp4a-latm). So, Is there any way to get the available video codecs for a device? Any help is appreciated. Get started Core areas; Get the samples and docs for the features you need. asked Dec 4, 2015 at 7:22. I'm trying to used the MediaCodec API on Android to decode an AAC stream. 1 Jelly Bean. 264 streams. Beginning with Android 10 (API level 29) and higher, there are methods in MediaCodecInfo that reveal more information This page is about the Android MediaCodec class, which can be used to encode and decode audio and video data. If you use ffmpeg, perhaps through the NDK, you'll have a software-only solution that works on just about any Android device. 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