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• h264_direct : use the reference mask from the actual reference

  2 août 2016, par Anton Khirnov

  h264_direct : use the reference mask from the actual reference
  Not from the underlying frame. Fixes races with frame threading in
  
  field-coded files, where decoding would wait for the wrong field (e.g.
  
  random failures in mixed-nal-coding).
  Bug-Id : 954
  

  • [DBH] libavcodec/h264_direct.c

• matroskadec : parse the channel layout mask for FLAC

  26 mai 2014, par Anton Khirnov

  matroskadec : parse the channel layout mask for FLAC
  It is commonly stored in a vorbiscomment block in codec private data.
  

  • [DBH] libavformat/Makefile
  • [DBH] libavformat/flacdec.c
  • [DBH] libavformat/matroskadec.c
  • [DBH] libavformat/oggdec.h
  • [DBH] libavformat/oggparsecelt.c
  • [DBH] libavformat/oggparseflac.c
  • [DBH] libavformat/oggparseogm.c
  • [DBH] libavformat/oggparseopus.c
  • [DBH] libavformat/oggparsespeex.c
  • [DBH] libavformat/oggparsetheora.c
  • [DBH] libavformat/oggparsevorbis.c

• How do I know the time left in order to convert to an audio file, to use that to display the remainder for downloading in front of the user

  6 novembre 2020, par Kerols afifi

  I got this code from GITHUB, and this is better for me than using the FFmpeg library, because this library only works at a minimum. Issued 24 APIs, but the code that I got I don't know exactly how to tell me when the conversion is finished and also how much time is left because it's the conversion to appear. In front of the user

  


  @SuppressLint("NewApi")
    public void genVideoUsingMuxer(Context context,String srcPath, String dstPath, int startMs, int endMs, boolean useAudio, boolean useVideo,long time) throws IOException {
        // Set up MediaExtractor to read from the source.
         extractor = new MediaExtractor();
        extractor.setDataSource(srcPath);
        int trackCount = extractor.getTrackCount();
        // Set up MediaMuxer for the destination.

    mediaMuxer = new MediaMuxer(dstPath, MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4);
    // Set up the tracks and retrieve the max buffer size for selected
    // tracks.
    HashMap indexMap = new HashMap(trackCount);
    int bufferSize = -1;
    for (int i = 0; i < trackCount; i++) {
        MediaFormat format = extractor.getTrackFormat(i);
        String mime = format.getString(MediaFormat.KEY_MIME);
        boolean selectCurrentTrack = false;
        if (mime.startsWith("audio/") && useAudio) {
            selectCurrentTrack = true;
        } else if (mime.startsWith("video/") && useVideo) {
            selectCurrentTrack = true;
        }
        if (selectCurrentTrack) {
            extractor.selectTrack(i);
            int dstIndex = mediaMuxer.addTrack(format);
            indexMap.put(i, dstIndex);
            if (format.containsKey(MediaFormat.KEY_MAX_INPUT_SIZE)) {
                int newSize = format.getInteger(MediaFormat.KEY_MAX_INPUT_SIZE);
                bufferSize = newSize > bufferSize ? newSize : bufferSize;
            }
        }
    }
    if (bufferSize < 0) {
        bufferSize = DEFAULT_BUFFER_SIZE;
    }
    // Set up the orientation and starting time for extractor.
    MediaMetadataRetriever retrieverSrc = new MediaMetadataRetriever();
    retrieverSrc.setDataSource(srcPath);
    String degreesString = retrieverSrc.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
    if (degreesString != null) {
        int degrees = Integer.parseInt(degreesString);
        if (degrees >= 0) {
            mediaMuxer.setOrientationHint(degrees);
        }
    }
    if (startMs > 0) {
        extractor.seekTo(startMs * 1000, MediaExtractor.SEEK_TO_CLOSEST_SYNC);
    }
    // Copy the samples from MediaExtractor to MediamediaMuxer. We will loop
    // for copying each sample and stop when we get to the end of the source
    // file or exceed the end time of the trimming.
    int offset = 0;
    int trackIndex = -1;
    time = bufferSize;
    ByteBuffer dstBuf = ByteBuffer.allocate(bufferSize);
    mediaMuxer.start();
    while (true) {
        bufferInfo.offset = offset;
        bufferInfo.size = extractor.readSampleData(dstBuf, offset);
        if (bufferInfo.size < 0) {
            Log.d(TAG, "Saw input EOS.");
            bufferInfo.size = 0;
            break;
        } else {
            bufferInfo.presentationTimeUs = extractor.getSampleTime();
            if (endMs > 0 && bufferInfo.presentationTimeUs > (endMs * 1000)) {
                Log.d(TAG, "The current sample is over the trim end time.");
                break;
            } else {
                bufferInfo.flags = extractor.getSampleFlags();
                trackIndex = extractor.getSampleTrackIndex();
                mediaMuxer.writeSampleData(indexMap.get(trackIndex), dstBuf, bufferInfo);
                extractor.advance();
            }
        }
    }

    mediaMuxer.stop();
    mediaMuxer.release();

    return;
}