No audio after Video Resample

[HardikSuba]

There is no audio in generated video file.
I have used this code,

VideoResampler resampler = new VideoResampler();
        resampler.addSamplerClip(new SamplerClip(inputUri));
        resampler.setOutput(outputUri);
        resampler.setOutputResolution(Resolution.RESOLUTION_360P.getWidth(), Resolution.RESOLUTION_360P.getHeight());
        try {
            resampler.start();
        } catch (Throwable e) {
            e.printStackTrace();
        }

[microgomi]

Hi HardikSuba, I have a same problem, did you resolve this issue?

[HardikSuba]

Hi microgomi, I am not able to solve it yet.

[gouravd]

I do not think this can be solved directly. You might want to mux the video from this converted file and audio from the original file together

[kaplandroid]

Any sample code for mux original audio?

[Berreis]

I am also having this problem? Does anyone have an idea on how to solve that?

[kaplandroid]

I added following code to my application. "audioFile" is original video file. You can try this.

import com.coremedia.iso.boxes.Container;
import com.googlecode.mp4parser.authoring.Movie;
import com.googlecode.mp4parser.authoring.builder.DefaultMp4Builder;
import com.googlecode.mp4parser.authoring.container.mp4.MovieCreator;

public Uri mux(String audioFile, String videoFile) {
    String outputFilePath = videoFile.replace(".mp4", "_with_audio.mp4");
    Uri outputFile = Uri.parse(outputFilePath);
    Movie video;

    try {
        video = new MovieCreator().build(videoFile);
    } catch (RuntimeException e) {
        e.printStackTrace();
        return null;
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }


    Movie audio;
    try {
        audio = new MovieCreator().build(audioFile);
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    } catch (NullPointerException e) {
        e.printStackTrace();
        return null;
    }

    try {
        // audioFile is my original big videoFile. Index 0 is video, index 1 is audio  in Tracks.
        // if you have a media file with only audio index can be 0. Be carefull
        video.addTrack(audio.getTracks().get(1)); // 
    } catch (Exception e) {
        e.printStackTrace();
    }

    Container out = new DefaultMp4Builder().build(video);

    FileOutputStream fos;
    try {
        fos = new FileOutputStream(outputFile.toString());
    } catch (FileNotFoundException e) {
        e.printStackTrace();
        return null;
    }
    BufferedWritableFileByteChannel byteBufferByteChannel = new BufferedWritableFileByteChannel(fos);
    try {
        out.writeContainer(byteBufferByteChannel);
        byteBufferByteChannel.close();
        fos.close();
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }
    return outputFile;
}

[AnswerZhao]

@kaplandroid It doesn't work, how can you do it?

[kaplandroid]

@AnswerZhao what is the error you are getting? Which line does not work?

[Berreis]

It worked. Thank you very much @kaplandroid

[iamnitesh]

i am getting error BufferedWritableFileByteChannel cannot be resolved to a type please give me some solution for that.. @kaplandroid

[kaplandroid]

@iamnitesh this is the class you need

private static class BufferedWritableFileByteChannel implements WritableByteChannel {
       private static final int BUFFER_CAPACITY = 1000000;

       private boolean isOpen = true;
       private final OutputStream outputStream;
       private final ByteBuffer byteBuffer;
       private final byte[] rawBuffer = new byte[BUFFER_CAPACITY];

       private BufferedWritableFileByteChannel(OutputStream outputStream) {
           this.outputStream = outputStream;
           this.byteBuffer = ByteBuffer.wrap(rawBuffer);
       }

       @Override
       public int write(ByteBuffer inputBuffer) throws IOException {
           int inputBytes = inputBuffer.remaining();

           if (inputBytes > byteBuffer.remaining()) {
               dumpToFile();
               byteBuffer.clear();

               if (inputBytes > byteBuffer.remaining()) {
                   throw new BufferOverflowException();
               }
           }

           byteBuffer.put(inputBuffer);

           return inputBytes;
       }

       @Override
       public boolean isOpen() {
           return isOpen;
       }

       @Override
       public void close() throws IOException {
           dumpToFile();
           isOpen = false;
       }

       private void dumpToFile() {
           try {
               outputStream.write(rawBuffer, 0, byteBuffer.position());
           } catch (IOException e) {
               throw new RuntimeException(e);
           }
       }
   }

[syc-pad]

Big edit :
Sorry, I plugged my brain off : it works pretty well, @kaplandroid :) 👍

[northoutRavindra]

@kaplandroid Where should i add urs code in my application? Sorry i did not get urs solution please help me to short our from this problem..My requirement is that , i want to compress the video only...

Thanks

[northoutRavindra]

@HardikSuba @syc-pad @Berreis .. Did u get the solution, please help me to short out from this problem....My requirement is that i want to compress the video only...
Thanks

[kaplandroid]

@northoutRavindra if you use my code sample you will only compress video track. Audio track remains same without any compression. Output files audio track is copy of original input files audio track