[FFmpeg-user] usage of fifo_size option while receiving udp stream hangs ffmpeg itself

Mon Sep 29 09:29:08 CEST 2014

Hi,

I need to capture UDP stream, 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”

so i use fifo_size option and exectuted below command but while processing  ffmpeg hanges itself. Out of total 1892 frames it process 1880 frames and then hangs.

Pleaee find complete logs below and let me know why it hangs does not produecd desired output.

*************************************************************************************************************************************************
ffmpeg -i 'udp://226.0.0.1:1234?fifo_size=49152&overrun_nonfatal=1' -map 0:v:1 -map 0:a:0 -acodec copy -f mp4 2909_1v.ts
ffmpeg version 2.4.1 Copyright (c) 2000-2014 the FFmpeg developers
  built on Sep 26 2014 15:32:03 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      54.  7.100 / 54.  7.100
  libavcodec     56.  1.100 / 56.  1.100
  libavformat    56.  4.101 / 56.  4.101
  libavdevice    56.  0.100 / 56.  0.100
  libavfilter     5.  1.100 /  5.  1.100
  libswscale      3.  0.100 /  3.  0.100
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  0.100 / 53.  0.100
Input #0, mpegts, from 'udp://226.0.0.1:1234?fifo_size=49152&overrun_nonfatal=1':
  Duration: N/A, start: 2102.952156, bitrate: 192 kb/s
  Program 1 
    Stream #0:0[0x44](???): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 192 kb/s
    Stream #0:1[0x45]: 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[0x46]: 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 @ 0x166f450] using SAR=10/11
[libx264 @ 0x166f450] using cpu capabilities: MMX2 SSE2 SSE3 Cache64
[libx264 @ 0x166f450] profile High, level 3.0
[libx264 @ 0x166f450] 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 @ 0x156ce40] track 1: codec frame size is not set
Output #0, mp4, to '2909_1v.ts':
  Metadata:
    encoder         : Lavf56.4.101
    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         : Lavc56.1.100 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 @ 0x156ce40] 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 @ 0x1546710] DTS 189435918 < 189437216 out of order bitrate= 190.7kbits/s dup=38 drop=0    
^C[mpegts @ 0x1546710] PES packet size mismatch=00:01:02.80 bitrate= 754.7kbits/s dup=38 drop=0    
    Last message repeated 1 times
av_interleaved_write_frame(): Immediate exit requested
frame= 1882 fps=8.9 q=-1.0 Lsize=    5787kB time=00:01:02.83 bitrate= 754.5kbits/s dup=38 drop=0    
video:4354kB audio:1474kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[libx264 @ 0x166f450] frame I:8     Avg QP:18.79  size: 42182
[libx264 @ 0x166f450] frame P:494   Avg QP:21.39  size:  6416
[libx264 @ 0x166f450] frame B:1380  Avg QP:26.63  size:   757
[libx264 @ 0x166f450] consecutive B-frames:  0.8%  0.9% 10.4% 88.0%
[libx264 @ 0x166f450] mb I  I16..4: 19.6% 29.5% 50.9%
[libx264 @ 0x166f450] 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 @ 0x166f450] 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 @ 0x166f450] 8x8 transform intra:39.4% inter:62.5%
[libx264 @ 0x166f450] coded y,uvDC,uvAC intra: 52.6% 65.0% 25.6% inter: 6.0% 9.5% 1.5%
[libx264 @ 0x166f450] i16 v,h,dc,p: 39% 29% 20% 13%
[libx264 @ 0x166f450] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 20% 37%  3%  4%  4%  5%  3%  5%
[libx264 @ 0x166f450] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 22% 23%  4%  5%  5%  5%  4%  4%
[libx264 @ 0x166f450] i8c dc,h,v,p: 45% 24% 27%  4%
[libx264 @ 0x166f450] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x166f450] ref P L0: 63.1%  8.6% 19.7%  8.6%
[libx264 @ 0x166f450] ref B L0: 87.3% 10.2%  2.5%
[libx264 @ 0x166f450] ref B L1: 93.4%  6.6%
[libx264 @ 0x166f450] kb/s:579.84
Received signal 2: terminating.
[root at localhost media_files]# 

Regards
AJ