[FFmpeg-user] Segmenting an rtp H264 stream of an IP camera
David Cassany Viladomat
david.cassany at i2cat.net
Wed Feb 27 13:05:16 CET 2013
I have just test to make segments with the following commands without
issues and getting video segments as the time they were coded:
ffmpeg -analyzeduration 10 -f lavfi -i testsrc -f s16le -i /dev/zero -vf
"format=yuv420p" -g 50 -qmin 28 -qmax 28 -ac 2 -b:a 128k -c:v libx264 -c:a
libfdk_aac -profile:v baseline -map 0 -flags -global_header -f segment
-segment_time_delta 0.03 -segment_time 3 live1_level2_%d.ts
ffmpeg -analyzeduration 10 -i big_buck_bunny.avi -g 50 -r 25 -qmin 28
-qmax 28 -ac 2 -b:a 128k -c:v libx264 -c:a libfdk_aac -profile:v baseline
-map 0 -flags -global_header -f segment -segment_time_delta 0.03
-segment_time 3 live1_level2_%d.ts
Hope it helps to get the core of this odd issue.
Thanks all,
Deivit
2013/2/27 David Cassany Viladomat <david.cassany at i2cat.net>
> Hi,
>
> I haven't tested to encode the testsrc, I'll check it now. Here is the
> complete output of my example, with this I get 9 video files (from
> live1_level2_0.ts to live1_level2_8.ts) which are reproducible (tested with
> vlc and an android tablet).
>
> ffmpeg -analyzeduration 10 -i rtsp://192.168.10.149/live1.sdp -vf
> scale=640:-1 -g 50 -r 25 -qmin 28 -qmax 28 -ac 2 -b:a 128k -c:v libx264
> -c:a libfdk_aac -profile:v baseline -map 0 -flags -global_header -f segment
> -segment_time_delta 0.03 -segment_time 3 live1_level2_%d.ts
> ffmpeg version 1.1.2 Copyright (c) 2000-2013 the FFmpeg developers
> built on Feb 14 2013 11:53:42 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
> configuration: --enable-gpl --enable-libass --enable-libfdk-aac
> --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb
> --enable-libopencore-amrwb --enable-librtmp --enable-libtheora
> --enable-libvorbis --enable-libvpx --enable-x11grab --enable-libx264
> --enable-nonfree --enable-version3 --enable-decoder=pcm_alaw
> --enable-decoder=pcm_mulaw
> libavutil 52. 13.100 / 52. 13.100
> libavcodec 54. 86.100 / 54. 86.100
> libavformat 54. 59.106 / 54. 59.106
> libavdevice 54. 3.102 / 54. 3.102
> libavfilter 3. 32.100 / 3. 32.100
> libswscale 2. 1.103 / 2. 1.103
> libswresample 0. 17.102 / 0. 17.102
> libpostproc 52. 2.100 / 52. 2.100
> [rtsp @ 0xa6b74c0] max_analyze_duration 10 reached at 13333
> [rtsp @ 0xa6b74c0] decoding for stream 0 failed
> [rtsp @ 0xa6b74c0] Estimating duration from bitrate, this may be inaccurate
> Guessed Channel Layout for Input Stream #0.1 : mono
> Input #0, rtsp, from 'rtsp://192.168.10.149/live1.sdp':
> Metadata:
> title : RTSP/RTP stream 1 from DCS-7010L
> comment : live1.sdp with v2.0
> Duration: N/A, start: 0.000000, bitrate: 64 kb/s
> Stream #0:0: Video: h264 (High), yuvj420p, 640x360 [SAR 1:1 DAR 16:9],
> 75 fps, 75 tbr, 90k tbn, 150 tbc
> Stream #0:1: Audio: pcm_mulaw, 8000 Hz, mono, s16, 64 kb/s
> [libx264 @ 0xa7078a0] using SAR=1/1
> [libx264 @ 0xa7078a0] using cpu capabilities: MMX2 SSE2Fast SSSE3
> FastShuffle SSE4.2 AVX
> [libx264 @ 0xa7078a0] profile Constrained Baseline, level 3.0
> [segment @ 0xa70d480] Codec for stream 0 does not use global headers but
> container format requires global headers
> [segment @ 0xa70d480] Codec for stream 1 does not use global headers but
> container format requires global headers
> Output #0, segment, to 'live1_level2_%d.ts':
> Metadata:
> title : RTSP/RTP stream 1 from DCS-7010L
> comment : live1.sdp with v2.0
> encoder : Lavf54.59.106
> Stream #0:0: Video: h264, yuvj420p, 640x360 [SAR 1:1 DAR 16:9],
> q=28-28, 90k tbn, 25 tbc
> Stream #0:1: Audio: aac, 8000 Hz, stereo, s16, 128 kb/s
> Stream mapping:
> Stream #0:0 -> #0:0 (h264 -> libx264)
> Stream #0:1 -> #0:1 (pcm_mulaw -> libfdk_aac)
> Press [q] to stop, [?] for help
> RTP: missed 48 packets28.0 size=N/A time=00:00:13.92 bitrate=N/A dup=370
> drop=0
> [h264 @ 0xaccc8c0] error while decoding MB 34 3, bytestream (-5)
> [h264 @ 0xaccc8c0] concealing 815 DC, 815 AC, 815 MV errors in P frame
> Trying to remove 1024 samples, but the queue is emptybitrate=N/A dup=376
> drop=0
> [segment @ 0xa70d480] Encoder did not produce proper pts, making some up.
> [libfdk_aac @ 0xa70c8e0] Trying to remove 1024 samples, but the queue is
> empty
> frame= 638 fps= 63 q=12015532.0 Lsize=N/A time=00:00:25.52 bitrate=N/A
> dup=376 drop=0
> video:1739kB audio:3kB subtitle:0 global headers:0kB muxing overhead
> -100.001234%
> [libx264 @ 0xa7078a0] frame I:18 Avg QP:28.00 size: 13882
> [libx264 @ 0xa7078a0] frame P:620 Avg QP:28.00 size: 2469
> [libx264 @ 0xa7078a0] mb I I16..4: 44.9% 0.0% 55.1%
> [libx264 @ 0xa7078a0] mb P I16..4: 6.2% 0.0% 2.9% P16..4: 15.6%
> 4.4% 1.3% 0.0% 0.0% skip:69.6%
> [libx264 @ 0xa7078a0] coded y,uvDC,uvAC intra: 31.0% 63.6% 20.8% inter:
> 7.1% 12.8% 1.3%
> [libx264 @ 0xa7078a0] i16 v,h,dc,p: 37% 22% 19% 22%
> [libx264 @ 0xa7078a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 13% 24% 4% 10%
> 10% 4% 3% 4%
> [libx264 @ 0xa7078a0] i8c dc,h,v,p: 67% 16% 14% 3%
> [libx264 @ 0xa7078a0] ref P L0: 87.4% 7.9% 4.6%
> [libx264 @ 0xa7078a0] kb/s:558.13
>
>
>
> Thanks for your time. regards,
> deivit
>
>
> 2013/2/27 Carl Eugen Hoyos <cehoyos at ag.or.at>
>
>> David Cassany Viladomat <david.cassany <at> i2cat.net> writes:
>>
>> > ffmpeg -analyzeduration 10 -i rtsp://192.168.10.149/live1.sdp
>> > -g 50 -r 25 -ac 2 -b:a 128k -c:v libx264 -c:a libfdk_aac
>> > -profile:v baseline -map 0 -flags -global_header -f segment
>> -segment_time_delta 0.03 -segment_time 3 live1_level2_%d.ts
>>
>> Is your problem only reproducible with rtsp input
>> or also if you use (for example) -f lavfi -i testsrc
>> -f s16le -i /dev/zero ?
>>
>> Please provide the complete, uncut console output of
>> your failing command line.
>>
>> Carl Eugen
>>
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>
>
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