#5154: Demux h264 stream from Arecont camera ---------------------------------------+---------------------------------- Reporter: cehoyos | Owner: Type: enhancement | Status: new Priority: wish | Component: avformat Version: git-master | Keywords: h264 Blocked By: | Blocking: Reproduced by developer: 0 | Analyzed by developer: 0 ---------------------------------------+---------------------------------- http://ffmpeg.org/pipermail/ffmpeg-user/2016-January/030122.html A user provided a stream dump from his Arecont Vision AV20365CO. FFmpeg correctly autodetects the stream as h264 but every frame starts with a http content header that makes remuxing impossible: {{{ $ ffmpeg -r 25 -i h264stream.dump -vcodec copy out.mov ffmpeg version N-77810-g405abdb Copyright (c) 2000-2016 the FFmpeg developers built with gcc 4.7 (SUSE Linux) configuration: --enable-gpl --enable-libx264 libavutil 55. 13.100 / 55. 13.100 libavcodec 57. 22.100 / 57. 22.100 libavformat 57. 21.101 / 57. 21.101 libavdevice 57. 0.100 / 57. 0.100 libavfilter 6. 23.100 / 6. 23.100 libswscale 4. 0.100 / 4. 0.100 libswresample 2. 0.101 / 2. 0.101 libpostproc 54. 0.100 / 54. 0.100 [h264 @ 0x29a9440] Stream #0: not enough frames to estimate rate; consider increasing probesize Input #0, h264, from 'h264stream.dump': Duration: N/A, bitrate: N/A Stream #0:0: Video: h264 (Baseline), yuv420p, 1280x960, 25 fps, 25 tbr, 1200k tbn, 50 tbc [mov @ 0x2a378e0] Codec for stream 0 does not use global headers but container format requires global headers Output #0, mov, to 'out.mov': Metadata: encoder : Lavf57.21.101 Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv420p, 1280x960, q=2-31, 25 fps, 25 tbr, 12800 tbn, 25 tbc Stream mapping: Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help [mov @ 0x2a378e0] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly frame= 20 fps=0.0 q=-1.0 Lsize= 13897kB time=00:00:00.80 bitrate=142304.5kbits/s speed=34.4x video:13896kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.006613% }}} The output file is unreadable. The following works fine: {{{ $ cat h264stream.dump | sed -u -b -e '/^--fbdr\r$/ {N;N;N;d}' | ffmpeg -i - -vcodec copy out.mov ffmpeg version N-77810-g405abdb Copyright (c) 2000-2016 the FFmpeg developers built with gcc 4.7 (SUSE Linux) configuration: --enable-gpl --enable-libx264 libavutil 55. 13.100 / 55. 13.100 libavcodec 57. 22.100 / 57. 22.100 libavformat 57. 21.101 / 57. 21.101 libavdevice 57. 0.100 / 57. 0.100 libavfilter 6. 23.100 / 6. 23.100 libswscale 4. 0.100 / 4. 0.100 libswresample 2. 0.101 / 2. 0.101 libpostproc 54. 0.100 / 54. 0.100 [h264 @ 0x27a33c0] Stream #0: not enough frames to estimate rate; consider increasing probesize Input #0, h264, from 'pipe:': Duration: N/A, bitrate: N/A Stream #0:0: Video: h264 (Baseline), yuv420p, 1280x960, 25 fps, 25 tbr, 1200k tbn, 50 tbc [mov @ 0x27aa460] Codec for stream 0 does not use global headers but container format requires global headers [mov @ 0x27aa460] WARNING codec timebase is very high. If duration is too long, file may not be playable by quicktime. Specify a shorter timebase or choose different container. Output #0, mov, to 'out.mov': Metadata: encoder : Lavf57.21.101 Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv420p, 1280x960, q=2-31, 25 fps, 25 tbr, 1200k tbn, 1200k tbc Stream mapping: Stream #0:0 -> #0:0 (copy) [mov @ 0x27aa460] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly frame= 20 fps=0.0 q=-1.0 Lsize= 13896kB time=00:00:00.76 bitrate=149782.4kbits/s speed=17.2x video:13895kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.006635% }}} http://www.stardot-tech.com/developer/api.html describes a different but similar format, it also distinguishes between "Content-type: video/H.264I" for I-frames and "Content-type: video/H.264P" for P-frames. -- Ticket URL: <https://trac.ffmpeg.org/ticket/5154> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker