[FFmpeg-user] fifo_size usage hangs ffmpeg

Fri Sep 26 09:24:09 CEST 2014

I need capture a udp stream, I describe the issue with below mentioned two cases, please let me know how this issue can be resolved?

Regards
Ajay

===============================================================================
Case1)
When I executed following command
"ffmpeg -i udp://226.0.0.1:1234 -map 0:v:1 -map 0:a:0 -acodec copy -f mp4 2609_5v.ts"

It says "Circular buffer overrun. To avoid, increase fifo_size URL option. To survive in such case, use overrun_nonfatal option"
Original total  video length 64 second but it generates only 40 second video , good part is this 40 second is playable.

==================================================================================
Case2)
Then I start using fifo_size option and executed below command
ffmpeg -i 'udp://226.0.0.1:1234?fifo_size=875000&overrun_nonfatal=1' -map 0:v:1 -map 0:a:0 -acodec copy -f mp4 2609_5v.ts

In this case it did not complain circular buffer overrun but after complete processing ffmpeg hangs itself , I waited a lot then I need to terminate this ffmpeg.
Output file generated by this case is not playable?
Below  are the complete  logs

ffmpeg -i 'udp://226.0.0.1:1234?fifo_size=875000&overrun_nonfatal=1' -map 0:v:1 -map 0:a:0 -acodec copy -f mp4 2609_5v.ts
ffmpeg version 2.3.3 Copyright (c) 2000-2014 the FFmpeg developers
  built on Sep 15 2014 17:53:59 with gcc 4.8.3 (GCC) 20140624 (Red Hat 4.8.3-1)
  configuration: --enable-debug --enable-gpl --enable-libx264 --enable-shared --disable-static --disable-optimizations --disable-mmx --disable-stripping
  libavutil      52. 92.100 / 52. 92.100
  libavcodec     55. 69.100 / 55. 69.100
  libavformat    55. 48.100 / 55. 48.100
  libavdevice    55. 13.102 / 55. 13.102
  libavfilter     4. 11.100 /  4. 11.100
  libswscale      2.  6.100 /  2.  6.100
  libswresample   0. 19.100 /  0. 19.100
  libpostproc    52.  3.100 / 52.  3.100
[mpegts @ 0x1e21710] PES packet size mismatch
Input #0, mpegts, from 'udp://226.0.0.1:1234?fifo_size=875000&overrun_nonfatal=1':
  Duration: N/A, start: 22597.430822, bitrate: 192 kb/s
  Program 1
    Stream #0:0[0x77](???): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 192 kb/s
    Stream #0:1[0x78](): Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr, 90k tbn, 119.88 tbc
    Stream #0:2[0x79](): Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(tv, smpte170m), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
[libx264 @ 0x1e902a0] using SAR=10/11
[libx264 @ 0x1e902a0] using cpu capabilities: MMX2 SSE2 SSE3 Cache64
[libx264 @ 0x1e902a0] profile High, level 3.0
[libx264 @ 0x1e902a0] 264 - core 138 r2363 c628e3b - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[mp4 @ 0x26fba70] track 1: codec frame size is not set
Output #0, mp4, to '2609_5v.ts':
  Metadata:
    encoder         : Lavf55.48.100
    Stream #0:0(): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 704x480 [SAR 10:11 DAR 4:3], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc
    Metadata:
      encoder         : Lavc55.69.100 libx264
    Stream #0:1(???): Audio: ac3 ([165][0][0][0] / 0x00A5), 48000 Hz, stereo, 192 kb/s
Stream mapping:
  Stream #0:2 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
[mp4 @ 0x26fba70] Non-monotonous DTS in output stream 0:1; previous: 39936, current: 39178; changing to 39937. This may result in incorrect timestamps in the output file.
[mpegts @ 0x1e21710] DTS 2033938998 < 2033940296 out of orderitrate= 189.7kbits/s dup=38 drop=0
^C[mpegts @ 0x1e21710] PES packet size mismatch=00:01:02.54 bitrate= 754.7kbits/s dup=38 drop=0
    Last message repeated 1 times
av_interleaved_write_frame(): Immediate exit requested
frame= 1882 fps= 17 q=-1.0 Lsize=    5786kB time=00:01:02.83 bitrate= 754.4kbits/s dup=38 drop=0
video:4354kB audio:1473kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[libx264 @ 0x1e902a0] frame I:8     Avg QP:18.79  size: 42182
[libx264 @ 0x1e902a0] frame P:494   Avg QP:21.39  size:  6416
[libx264 @ 0x1e902a0] frame B:1380  Avg QP:26.63  size:   757
[libx264 @ 0x1e902a0] consecutive B-frames:  0.8%  0.9% 10.4% 88.0%
[libx264 @ 0x1e902a0] mb I  I16..4: 19.6% 29.5% 50.9%
[libx264 @ 0x1e902a0] mb P  I16..4:  2.6%  2.8%  1.3%  P16..4: 36.5%  8.8%  6.1%  0.0%  0.0%    skip:41.8%
[libx264 @ 0x1e902a0] mb B  I16..4:  0.1%  0.1%  0.0%  B16..8: 25.0%  1.5%  0.2%  direct: 0.9%  skip:72.3%  L0:42.6% L1:50.2% BI: 7.3%
[libx264 @ 0x1e902a0] 8x8 transform intra:39.4% inter:62.5%
[libx264 @ 0x1e902a0] coded y,uvDC,uvAC intra: 52.6% 65.0% 25.6% inter: 6.0% 9.5% 1.5%
[libx264 @ 0x1e902a0] i16 v,h,dc,p: 39% 29% 20% 13%
[libx264 @ 0x1e902a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 20% 37%  3%  4%  4%  5%  3%  5%
[libx264 @ 0x1e902a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 22% 23%  4%  5%  5%  5%  4%  4%
[libx264 @ 0x1e902a0] i8c dc,h,v,p: 45% 24% 27%  4%
[libx264 @ 0x1e902a0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x1e902a0] ref P L0: 63.1%  8.6% 19.7%  8.6%
[libx264 @ 0x1e902a0] ref B L0: 87.3% 10.2%  2.5%
[libx264 @ 0x1e902a0] ref B L1: 93.4%  6.6%
[libx264 @ 0x1e902a0] kb/s:579.84
Received signal 2: terminating.
[root at localhost media_files]#

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