xuggler:编码的 3gp 文件中没有视频
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,就像在程序中停止抛出错误和异常一样,但创建的新文件没有任何视频。现在我的工作没有任何错误或异常,所以我已经陷入困境。 编辑:请注意,音频正在工作,因为它会发出声音。
这是配置侦听器的主函数的代码
IMediaReader 阅读器 = 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(文件输入文件,文件输出文件) { this.outputFile = 输出文件; 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。如果有人能指出我正确的方向,我将不胜感激。
编辑:如果我看到新编码视频的属性,则其音频属性已设置,并且其视频属性不在视频属性中,即尺寸= 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。
i am trying to encode videos into 3gp format using xuggler, i somehow got it to work, work as in the program stopped throwing errors and exceptions, but the new file that is created does not have any video. Now there is no error or exception for me to work with so i have stuck a wall.
EDIT: Note the audio is working as it shud.
This is the code for the main function where the listeners are configured
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)
;
And this is the code for the convertor that i wrote.
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();
}
}
I just cant seem to figure out where the problem is. I wud be thankful if someone wud plz point me in the right direction.
EDIT: If i see the properties of my newly encoded video, its audio properties are set and its video properties are not i.e in video properties, dimension= 0 x 0, frame rate= N/A and codec= h.263. The problem here is the 0 x 0 dimension.
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好吧,我找到了答案,但不完全是答案,而是一种做我正在做的事情的方法。现在我不太清楚为什么我的代码不起作用,但是 hre 你可以找到对我有用的解决方案。作者在这里只是制作了一个单独的调整器类,将其添加为读者的侦听器。它重写了 onPictureEvent 方法。然后他创建另一个类 MyVideoListener 并重写 onAddStream 方法并将其添加为 writer 的侦听器。然后他通过将 writer 添加为 resizer 的侦听器来链接这两个部分。就像魅力一样。
well i found the answer, well not exactly the answer but a way to do what i was doing. Right now i am not quiet sure why my code was not working but the hre u can find the solution that worked for me. the author here just makes a seperate resizer class, adds it as a listener to the reader,. It has the onPictureEvent method overridden. Then he makes another class MyVideoListener and overrides the onAddStream method and adds it as a listener to the writer. and then he links the two parts by adding writer as a listener to resizer. works like a a charm.