我正在尝试使用 xuggler 将视频编码为 3gp 格式,我以某种方式让它工作,在程序中工作停止抛出错误和异常,但创建的新文件没有任何视频。现在我没有错误或异常可以使用,所以我已经卡了一堵墙。编辑:请注意音频正在工作。
这是配置侦听器的主要功能的代码
IMediaReader reader = ToolFactory.makeReader("/home/hp/mms/b.flv");
IMediaWriter writer = ToolFactory.makeWriter("/home/hp/mms/xuggle/a_converted.3gp", reader);
IMediaDebugListener debugListener = ToolFactory.makeDebugListener();
writer.addListener(debugListener);
ConvertVideo convertor = new ConvertVideo(new File("/home/hp/mms/b.flv"), new File("/home/hp/mms/xuggle/a_converted.3gp"));
// convertor.addListener(writer);
reader.addListener(writer);
writer.addListener(convertor);
while (reader.readPacket() == null)
;
这是我编写的转换器的代码。
public ConvertVideo(File inputFile, File outputFile) { this.outputFile = outputFile; reader = ToolFactory.makeReader(inputFile.getAbsolutePath()); reader.addListener(this); }
private IVideoResampler videoResampler = null;
private IAudioResampler audioResampler = null;
@Override
public void onAddStream(IAddStreamEvent event)
{
if (writer == null)
{
writer = ToolFactory.makeWriter(outputFile.getAbsolutePath(), reader);
}
int streamIndex = event.getStreamIndex();
IStreamCoder streamCoder = event.getSource().getContainer().getStream(streamIndex).getStreamCoder();
if (streamCoder.getCodecType() == ICodec.Type.CODEC_TYPE_AUDIO)
{
streamCoder.setFlag(IStreamCoder.Flags.FLAG_QSCALE, false);
writer.addAudioStream(streamIndex, 0, 1, 8000);
}
else if (streamCoder.getCodecType() == ICodec.Type.CODEC_TYPE_VIDEO)
{
streamCoder.setFlag(IStreamCoder.Flags.FLAG_QSCALE, false);
streamCoder.setCodec(ICodec.findEncodingCodecByName("h263"));
writer.addVideoStream(streamIndex, 0, VIDEO_WIDTH, VIDEO_HEIGHT);
}
super.onAddStream(event);
}
// //
@Override
public void onVideoPicture(IVideoPictureEvent event)
{
IVideoPicture pic = event.getPicture();
if (videoResampler == null)
{
videoResampler = IVideoResampler.make(VIDEO_WIDTH, VIDEO_HEIGHT, pic.getPixelType(), pic.getWidth(), pic.getHeight(), pic.getPixelType());
}
IVideoPicture out = IVideoPicture.make(pic.getPixelType(), VIDEO_WIDTH, VIDEO_HEIGHT);
videoResampler.resample(out, pic);
IVideoPictureEvent asc = new VideoPictureEvent(event.getSource(), out, event.getStreamIndex());
super.onVideoPicture(asc);
out.delete();
}
@Override
public void onAudioSamples(IAudioSamplesEvent event)
{
IAudioSamples samples = event.getAudioSamples();
if (audioResampler == null)
{
audioResampler = IAudioResampler.make(1, samples.getChannels(), 8000, samples.getSampleRate());
}
if (event.getAudioSamples().getNumSamples() > 0)
{
IAudioSamples out = IAudioSamples.make(samples.getNumSamples(), samples.getChannels());
audioResampler.resample(out, samples, samples.getNumSamples());
AudioSamplesEvent asc = new AudioSamplesEvent(event.getSource(), out, event.getStreamIndex());
super.onAudioSamples(asc);
out.delete();
}
}
我似乎无法弄清楚问题出在哪里。如果有人请我指出正确的方向,我将不胜感激。
编辑:如果我看到我新编码的视频的属性,它的音频属性已设置,并且它的视频属性不在视频属性中,尺寸 = 0 x 0,帧速率 = N/A 和编解码器 = h.263。这里的问题是 0 x 0 维度。