[x264-devel] analyzing H264 packets

[CAdevel]

I'm analyzing H.264 movies using ffmpeg. I modified the h264.c file to
gather all information I want and simply run ffmpeg (or ffplay). That works
fine. Now if issue 2) means you also want to output a modified h264 stream,
I think neither the shoe or the glass will work.

Cor


2007/7/31, Loren Merritt <lorenm at u.washington.edu>:
>
> On Tue, 31 Jul 2007, aviad rozenhek wrote:
>
> > I am receiving H264 packets over RTP. I would like to use x264 to
> >
> > 1) analyze the packets, to know what kind of NAL units it contains
> > (for instance, discovering if the NAL is an IDR frame).
> > 2)  repeat the H264 headers before each IDR frame. (note that data is
> > already encoded, so I can't use x264_encoder_encode)
>
> Whenever I hear anyone ask "I want to use X to do Y", I think of a story:
> http://weblogs.asp.net/alex_papadimoulis/archive/2005/05/25/408925.aspx
>
> No, x264 can't analyze or modify existing h264 streams. x264 is only an
> encoder. http://h264bitstream.sf.net/ might do what you want.
>
> --Loren Merritt
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> x264-devel at videolan.org
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