[Libav-user] remuxing MKV/H.264 to MPEG2 Elemntary Stream

[Pavel Sokolov]

19.02.2012 15:35, Alex Cohn пишет:
> Please have a look at mpegts_write_packet() public function in the
> same c file. You notice that it accepts h264 packets in annex B format
> only:
Alex, thank you, now all works fine with the two steps:

1. Adding 'h264_mp4toannexb' bitstream filter processing after each call 
of the av_read_frame
2. Adding the next code from mpegtsenc.c after bitstream filter:

         do {
             p = avpriv_mpv_find_start_code(p, buf_end, &state);
             //av_log(s, AV_LOG_INFO, "nal %d\n", state & 0x1f);
         } while (p < buf_end && (state & 0x1f) != 9 &&
                  (state & 0x1f) != 5 && (state & 0x1f) != 1);

         if ((state & 0x1f) != 9) { // AUD NAL
             data = av_malloc(pkt->size+6);
             if (!data)
                 return -1;
             memcpy(data+6, pkt->data, pkt->size);
             AV_WB32(data, 0x00000001);
             data[4] = 0x09;
             data[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit
             buf  = data;
             size = pkt->size+6;
         }



-- 

With best regards, Pavel A. Sokolov
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skype: pavel_a_sokolov