disposing unused IMediaWriter

[King]

Hi all,

I'm using Xuggler to encode videos captured from a USB camera (no audio). I create the relevant IMediaWriter as follows:

   String fileName = someFileName();

   IMediaWriter writer = ToolFactory.makeWriter(fileName);

   

   VideoFormat vf = someVideoFormat();

   writer.addVideoStream(0, 0, ICodec.ID.CODEC_ID_H264, vf.getWidth(), vf.getHeight());

When the capture session is finished, I do this:

   writer.flush();

   writer.close();

Sometimes the writer is created, but we end up not capturing any frames before the session ends, so the video file will remain empty.

However, I noticed in this scenario - when no frames are encoded - ie. the IMediaWriter is created but completely unused - writer.flush() and writer.close() both would freeze and not return, causing my app to "hang".

So 3 questions:

1) What's causing the freeze?

2) Is there a proper way to close an unused IMediaWriter, when no frames were recorded?

3) I'm currently using the following workaround, so that I can close and then delete the empty file. Would this cause any problems? (seems OK so far)

   writer.getContainer.close();

thanks a lot, cheers,

King