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• ffmpeg drops time delay on last frame of animated GIF

  13 août 2014, par Austin

  I am trying to convert animated GIFs to MP4 files using ffmpeg and x264. However, I seem be suffering from the effects of this bug in ffmpeg that causes the delay time of the last frame of the GIF to be ignored. For very short GIFs, this is quite a problem.

  As a work around, I was thinking that I should be able to manually tell ffmpeg to freeze on the last frame for a certain amount of time, specifically the proper duration of that frame (which I can extract from the GIF). However, I can’t seem to find a good way to do this. Any suggestions ? I would really like to be able to do this without having to split to the GIF into frames before putting it into ffmpeg since that will mess up GIFs with a non-constant framerate (in addition to being much slower).

  I am using ffmpeg version 2.3, though I have also tried this with the latest git code without any improvement. The full ffmpeg commands I’m using look like this :

  ffmpeg -i animation.gif -vf "scale=trunc(in_w/2)*2:trunc(in_h/2)*2" -c:v libx264 -b:v 2000k -y -pix_fmt yuv420p -f mp4 animation.mp4

  Here is some console output :

  ffmpeg version 2.3 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Aug 11 2014 21:19:46 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: --enable-gpl --enable-libass --enable-libfreetype --enable-libtheora --enable-libvorbis --enable-libx264
  
    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
  
  Input #0, gif, from 'animation.gif':
  
    Duration: N/A, bitrate: N/A
  
      Stream #0:0: Video: gif, bgra, 500x375, 100 tbr, 100 tbn, 100 tbc
  
  [libx264 @ 0x239ea00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x239ea00] profile High, level 3.1
  
  [libx264 @ 0x239ea00] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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=6 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=abr mbtree=1 bitrate=2000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'animation.mp4':
  
    Metadata:
  
      encoder         : Lavf55.48.100
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 500x374, q=-1--1, 2000 kb/s, 100 fps, 12800 tbn, 100 tbc
  
      Metadata:
  
        encoder         : Lavc55.69.100 libx264
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (gif (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  frame=    7 fps=0.0 q=-1.0 Lsize=       7kB time=00:00:00.05 bitrate=1222.1kbits/s dup=5 drop=0    
  
  video:7kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 13.542441%
  
  [libx264 @ 0x239ea00] frame I:1     Avg QP:34.86  size:  3657
  
  [libx264 @ 0x239ea00] frame P:3     Avg QP:30.86  size:   744
  
  [libx264 @ 0x239ea00] frame B:3     Avg QP:33.33  size:    49
  
  [libx264 @ 0x239ea00] consecutive B-frames: 42.9%  0.0%  0.0% 57.1%
  
  [libx264 @ 0x239ea00] mb I  I16..4: 10.2% 78.3% 11.6%
  
  [libx264 @ 0x239ea00] mb P  I16..4:  1.2%  5.0%  0.8%  P16..4: 11.7%  3.3%  1.2%  0.0%  0.0%    skip:76.8%
  
  [libx264 @ 0x239ea00] mb B  I16..4:  0.0%  0.1%  0.0%  B16..8:  3.7%  0.0%  0.0%  direct: 0.0%  skip:96.2%  L0:23.5% L1:76.5% BI: 0.0%
  
  [libx264 @ 0x239ea00] final ratefactor: 20.31
  
  [libx264 @ 0x239ea00] 8x8 transform intra:77.0% inter:79.4%
  
  [libx264 @ 0x239ea00] coded y,uvDC,uvAC intra: 39.5% 0.0% 0.0% inter: 2.7% 0.0% 0.0%
  
  [libx264 @ 0x239ea00] i16 v,h,dc,p: 38% 27%  7% 28%
  
  [libx264 @ 0x239ea00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 12% 13%  7%  6% 10%  4%  8%  5%
  
  [libx264 @ 0x239ea00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 38% 11% 14%  5%  8% 10%  5%  7%  2%
  
  [libx264 @ 0x239ea00] i8c dc,h,v,p: 100%  0%  0%  0%
  
  [libx264 @ 0x239ea00] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x239ea00] ref P L0: 99.1%  0.7%  0.3%
  
  [libx264 @ 0x239ea00] ref B L0: 85.0% 15.0%
  
  [libx264 @ 0x239ea00] ref B L1: 95.4%  4.6%
  
  [libx264 @ 0x239ea00] kb/s:689.83

• ffmpeg RTSP MPEG4 to h.264 RTSP not streaming

  25 août 2017, par martyn

  I’m trying to re stream a RTSP feed and convert to h264.

  I’m using the following command line :

  C:\Users\Martyn>ffmpeg -re -i rtsp://192.168.2.207/VideoInput/1/mpeg4/ -preset ultrafast -vcodec libx264 -tune zerolatency -b:v 900k -f rtsp udp://192.168.0.2:1234

  The output I get is :

  C:\Users\Martyn>ffmpeg -re -i rtsp://192.168.2.207/VideoInput/1/mpeg4/ -preset u
  
  ltrafast -vcodec libx264 -tune zerolatency -b:v 900k -f rtsp udp://192.168.0.2:1
  
  234
  
  ffmpeg version N-87043-gf0f48884b0 Copyright (c) 2000-2017 the FFmpeg developers
  
  
  
    built with gcc 7.2.0 (Rev1, Built by MSYS2 project)
  
    configuration:  --enable-avisynth --enable-gcrypt --enable-libmp3lame --enable
  
  -libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --
  
  enable-cuda --enable-cuvid --enable-schannel --disable-w32threads --extra-cflags
  
  =-DPTW32_STATIC_LIB --extra-libs=-lpthread --extra-libs=-lwsock32 --enable-gpl -
  
  -disable-debug
  
    libavutil      55. 74.100 / 55. 74.100
  
    libavcodec     57.103.100 / 57.103.100
  
    libavformat    57. 77.100 / 57. 77.100
  
    libavdevice    57.  7.101 / 57.  7.101
  
    libavfilter     6.100.100 /  6.100.100
  
    libswscale      4.  7.103 /  4.  7.103
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  Input #0, rtsp, from 'rtsp://192.168.2.207/VideoInput/1/mpeg4/':
  
    Metadata:
  
      title           : MC153906N015_Camera_1
  
    Duration: N/A, start: 0.040000, bitrate: N/A
  
      Stream #0:0: Video: mpeg4 (Simple Profile), yuv420p, 1920x1080 [SAR 1:1 DAR
  
  16:9], 25 tbr, 90k tbn, 1k tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mpeg4 (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0000000002c422c0] using SAR=1/1
  
  [libx264 @ 0000000002c422c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  AVX
  
  [libx264 @ 0000000002c422c0] profile Constrained Baseline, level 4.0
  
  [libx264 @ 0000000002c422c0] 264 - core 152 r2851 ba24899 - H.264/MPEG-4 AVC cod
  
  ec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=0 r
  
  ef=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0
  
   me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 ch
  
  roma_qp_offset=0 threads=8 lookahead_threads=8 sliced_threads=1 slices=8 nr=0 de
  
  cimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 ke
  
  yint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=abr mbtree=0 bitrate=900 ra
  
  tetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0

  How do I know if this is streaming or not ? when I try to connect to udp ://192.168.0.2:1234 nothing happens.

• Convert mp3 -> Video with static image ( ffmpeg/libav & BASH )

  19 août 2014, par Max

  Some years ago I used the following bash script to get a video out of mp3’s and one image (so the image in the video was freezed over the length of the mp3), which worked out fine.

  i=0;
  
  for file in *.mp3; 
  
  do 
  
  i=$((i+1));
  
  ffmpeg -loop 1 -shortest -y -i image.jpg -i $file -acodec copy -vcodec libx264 $file.flv;
  
  done

  Now I wanted to use this again for doing the same.

  Problem :

  It does not stop converting at the end of the mp3. Means the current mp3 file eg. has a length of 3 minutes and the script converts until forever or I stop it, so the length of the flv is much bigger than 3 minutes.

  (ffmpeg is installed, but with libav the same happens)

  Output :

  ffmpeg version 1.2.6-7:1.2.6-1~trusty1 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Apr 26 2014 18:52:58 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: --arch=amd64 --disable-stripping --enable-avresample --enable-pthreads --enable-runtime-cpudetect --extra-version='7:1.2.6-1~trusty1' --libdir=/usr/lib/x86_64-linux-gnu --prefix=/usr --enable-bzlib --enable-libdc1394 --enable-libfreetype --enable-frei0r --enable-gnutls --enable-libgsm --enable-libmp3lame --enable-librtmp --enable-libopencv --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-vaapi --enable-vdpau --enable-libvorbis --enable-libvpx --enable-zlib --enable-gpl --enable-postproc --enable-libcdio --enable-x11grab --enable-libx264 --shlibdir=/usr/lib/x86_64-linux-gnu --enable-shared --disable-static
  
    libavutil      52. 18.100 / 52. 18.100
  
    libavcodec     54. 92.100 / 54. 92.100
  
    libavformat    54. 63.104 / 54. 63.104
  
    libavdevice    53.  5.103 / 53.  5.103
  
    libavfilter     3. 42.103 /  3. 42.103
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  [image2 @ 0x6d0740] max_analyze_duration 5000000 reached at 5000000 microseconds
  
  Input #0, image2, from 'Bild2.png':
  
    Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: png, rgba, 382x417, 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  [mp3 @ 0x6c4ac0] max_analyze_duration 5000000 reached at 5015510 microseconds
  
  [mp3 @ 0x6c4ac0] Estimating duration from bitrate, this may be inaccurate
  
  Input #1, mp3, from 'sons.mp3':
  
    Duration: 00:00:35.11, start: 0.000000, bitrate: 127 kb/s
  
      Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
  
  [libx264 @ 0x6da700] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x6da700] profile High 4:4:4 Predictive, level 2.1, 4:4:4 8-bit
  
  [libx264 @ 0x6da700] 264 - core 142 r2389 956c8d8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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=4 threads=6 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
  
  Output #0, flv, to 'sons.mp3.flv':
  
    Metadata:
  
      encoder         : Lavf54.63.104
  
      Stream #0:0: Video: h264 ([7][0][0][0] / 0x0007), yuv444p, 382x417, q=-1--1, 1k tbn, 25 tbc
  
      Stream #0:1: Audio: mp3 ([2][0][0][0] / 0x0002), 44100 Hz, stereo, 128 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (png -> libx264)
  
    Stream #1:0 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help