android-mediacodec

问题 I have a single, fullscreen SurfaceView . And I have multiple network streams with h264 video which I can decode using MediaCodec . Is it possible to specify to which coordinates of the Surface will the video be rendered? So I can create kind of video mozaic? 回答1: No, that's not possible. You'll need to use multiple SurfaceTexture s instead, one per video decoder, and render all the textures into one view using Open GL. See https://source.android.com/devices/graphics/architecture.html for

问题 there is some unique concept about processing Lottie Animations using FFMPEG video processing library and MediaCodec. In that, I wants to make video from Lottie animation and overlay that video on other original video. But the problem is i'm unable to make a video with transparent background from Lottie animation. So i made simple video from Lottie animation using MediaCodec and MediaMuxer, it takes one by one frame from Lottie Drawable and attach it to the video(Lottie Video). Here is the

问题 I am trying to add waterMark to the video by using this library but i couldn't the get the desired result as shown in the library https://github.com/MasayukiSuda/Mp4Composer-android . can anyone point out or help me how to solve it thanks what i tried mp4Composer = new Mp4Composer(videoItem.getPath(), videoPath) // .rotation(Rotation.ROTATION_270) .size(720, 720) .fillMode(FillMode.PRESERVE_ASPECT_FIT) .filter(new GlWatermarkFilter(BitmapFactory.decodeResource(context.getResources(),R

问题 I am trying to display raw H264 data from a camera device to my android app. I am able to receive data on a Textview but not able to display it on Textureview. I am a beginner in android and I am no expert in decoding raw data. It would be appreciated if someone could suggest a solution. Please find the below codes: Code for getting the data public class myVideoReceiver extends Thread { public boolean bKeepRunning2 = true; public String lastMessage2 = ""; public void run() { String message2;

问题 I'm trying to record the screen with MediaProjection API. I want to trim the video that was recorded by the media projection. Is there a way to do that without using any 3rd party dependency? 回答1: After lots of digging, I found this snippet /** * @param srcPath the path of source video file. * @param dstPath the path of destination video file. * @param startMs starting time in milliseconds for trimming. Set to * negative if starting from beginning. * @param endMs end time for trimming in

问题 I'm using MediaCodec for video decoding and playing it on surface texture. It all works fine, but when I am decoding audio, it's getting decoded successfully, but when I am trying to play it using AudioTrack I am getting following error: com.**** I/OMXClient: Using client-side OMX mux. com.**** I/OMXClient: Using client-side OMX mux. com.**** E/ACodec: [OMX.Intel.VideoDecoder.AVC] storeMetaDataInBuffers failed w/ err -2147483648 com.**** A/libc: Fatal signal 11 (SIGSEGV) at 0x0029004c (code=1

问题 I'm using MediaCodec for video decoding and playing it on surface texture. It all works fine, but when I am decoding audio, it's getting decoded successfully, but when I am trying to play it using AudioTrack I am getting following error: com.**** I/OMXClient: Using client-side OMX mux. com.**** I/OMXClient: Using client-side OMX mux. com.**** E/ACodec: [OMX.Intel.VideoDecoder.AVC] storeMetaDataInBuffers failed w/ err -2147483648 com.**** A/libc: Fatal signal 11 (SIGSEGV) at 0x0029004c (code=1

问题 Actually I am working with OpenGL and I would like to put all my textures in MP4 in order to compress them. Then I need to get it from MP4 on my Android I need somehow decode MP4 and get frame by frame by request. I found this MediaCodec https://developer.android.com/reference/android/media/MediaCodec and this MediaMetadataRetriever https://developer.android.com/reference/android/media/MediaMetadataRetriever But I did not see approach how to request frame by frame... If there is someone who

问题 I have MediaMuxer : MediaMuxer mMediaMuxer = new MediaMuxer(new File(Environment.getExternalStorageDirectory(), "video.mp4").getPath(), MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4); And code, which records video: MediaFormat mMediaFormat = MediaFormat.createVideoFormat("video/avc", width, height); mMediaFormat.setInteger(MediaFormat.KEY_COLOR_FORMAT, CodecCapabilities.COLOR_FormatSurface); mMediaFormat.setInteger(MediaFormat.KEY_BIT_RATE, 128000); mMediaFormat.setInteger(MediaFormat.KEY_FRAME

问题 I'm aware that I can check the max supported instances of MediaCodec using getMaxSupportedInstances The problem I have is - If another application is using MediaCodec , and I open my application then my application fails. In other words, if another developer is not handling the release of MediaCodec correctly then my application will "suffer" from this. I doubt that there is a way to release current instances of MediaCodec which my application did not create? What I currently do is, I use a