Hi Guys, I've been trying to develop an RTP demuxer to pass to the FFMPEG (libavcodec) H263 packets in Mode-A. However I can't seem to make the FFMPEG happy with the I-frames I am feeding it with. With fragmented frames (such as a large I-frame) I am rebuilding the whole frame following RFC 2190 and the "Marker" rules and passing it to the Libavcodec layer. However video looks buggy and it looks that I have to add some kind of header to the beginning of each frame before passing it to the Libavcodec layer. Errors like this are coming out all the time: illegal dc 128 at 0 3 illegal ac vlc code at 0x3 Error at MB: 69 illegal ac vlc code at 4x15 Error at MB: 349 concealing 379 DC, 379 AC, 379 MV errors I have previously built an H264 over RTP demuxer and I had to add 0x00 0x00 0x00 0x01 0x21 header to every fragment of I Frame in order for it to be decoded correctly. But I can't find anywhere documentation on how to do this with H263. Maybe you could lend me a hand? Cheers and thanks a lot
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