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• FFmpeg | subtitles with ass format

  26 octobre 2018, par Praveen Tamil

  I would like to generate subtitles with dynamic font

  [Script Info]
  
  ScriptType: v4.00+
  
  PlayResX: 1280
  
  PlayResY: 720
  
  Title: WoFox
  
  
  
  [V4+ Styles]
  
  Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
  
  Style: Default,Arial,30,&Hffffff,&Hffffff,&H0000FF,&H0000FF,0,0,0,0,100,100,5,0,3,1,0,3,10,10,10,1
  
  Style: Default1,/home/nodeuser8/tmp/CharmonmanRegular.ttf,40,&Hffffff,&Hffffff,&H0000FF,&H0000FF,0,0,0,0,100,100,5,0,3,1,0,3,10,10,10,1
  
  
  
  [Events]
  
  Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
  
  Dialogue: 0,00:00:00.0,00:00:03.0,Default,,0,0,0,,My first subtitle! Click this text to edit
  
  Dialogue: 0,00:00:00.0,00:00:03.0,Default1,,0,0,0,,This box shows the amount of text that fits into one caption. As you change the style of the captions, you can preview how

  And my ffmpeg code is

  ffmpeg -i ./tmp/source.mp4 -t 5 -filter_complex "ass=filename=./tmp/subtitles.ass" ./t mp/output.mp4 -y

  But I didn’t get out expected output.

  The Console is

  [Parsed_ass_0 @ 0x58680c0] Shaper: FriBidi 1.0.5 (SIMPLE)
  
  [Parsed_ass_0 @ 0x58680c0] Using font provider fontconfig
  
  [Parsed_ass_0 @ 0x58680c0] Added subtitle file: './tmp/subtitles.ass' (3 styles, 2 events)
  
  Stream mapping:
  
    Stream #0:0 (h264) -> ass (graph 0)
  
    ass (graph 0) -> Stream #0:0 (libx264)
  
    Stream #0:1 -> #0:1 (aac (native) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  [Parsed_ass_0 @ 0x5cd4180] Shaper: FriBidi 1.0.5 (SIMPLE)
  
  [Parsed_ass_0 @ 0x5cd4180] Using font provider fontconfig
  
  [Parsed_ass_0 @ 0x5cd4180] Added subtitle file: './tmp/subtitles.ass' (3  styles, 2 events)
  
  [Parsed_ass_0 @ 0x5cd4180] fontselect: (Arial, 400, 0) -> /usr/share/fonts/liberation/LiberationSans-Regular.ttf, 0, LiberationSans
  
  [Parsed_ass_0 @ 0x5cd4180] fontselect: (/home/nodeuser8/tmp/CharmonmanRegular.ttf, 400, 0) -> /usr/share/fonts/dejavu/DejaVuSans.ttf, 0, DejaVuSans
  
  [libx264 @ 0x5869880] using SAR=1/1
  
  [libx264 @ 0x5869880] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x5869880] profile High, level 3.1, 4:2:0, 8-bit
  
  [libx264 @ 0x5869880] 264 - core 157 r2935 545de2f - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - 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=15 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, mp4, to './tmp/output.mp4':

  Here I’m trying to load font from /home/nodeuser8/tmp/CharmonmanRegular.ttf but ffmpeg load font from /usr/share/fonts/dejavu/DejaVuSans.ttf.

  So how to load fontfile for ass subtitles ?

• 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 - Images to Video

  24 mars 2014, par Mahesh

  ffmpeg -f image2 -r 15 -i images/img%03d.jpg -vcodec libx264 video.mp4

  I run this code with exec in php.

  I am not getting the output. The video.mp4 is blank.

  However if i modify this commade to something like this,

  ffmpeg -f image2 -i i.jpg -vcodec libx264 -t 15 video.mp4

  The video is running for 15 seconds.

  I tried -r 1/15. It is not working too.
  Where do i do the mistake ?

  <?php
  
  $command = "/usr/bin/ffmpeg -f image2 -r 15 -i images/img%03d.jpg -vcodec libx264 video.mp4";
  
  exec($command);
  
  ?>

  images folder has img001.jpg img002.jpg ... img005.jpg

  Array
  
  (
  
  [0] => ffmpeg version N-48645-gf3c9d8d Copyright (c) 2000-2013 the FFmpeg developers
  
  [1] =>   built on Jan  9 2013 04:08:32 with gcc 4.7 (Debian 4.7.2-5)
  
  [2] =>   configuration: --extra-cflags=-I../static/include --extra-ldflags='-L../static/lib -static' --enable-gpl --enable-version3 --enable-static --disable-shared --disable-debug --enable-runtime-cpudetect --disable-x11grab --enable-libmp3lame --enable-libx264 --enable-libspeex --enable-libvorbis --enable-libvpx --enable-libfreetype --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libxavs --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-gray --enable-libopenjpeg --disable-ffserver
  
  [3] =>   libavutil      52. 13.100 / 52. 13.100
  
  [4] =>   libavcodec     54. 86.100 / 54. 86.100
  
  [5] =>   libavformat    54. 59.106 / 54. 59.106
  
  [6] =>   libavdevice    54.  3.102 / 54.  3.102
  
  [7] =>   libavfilter     3. 32.100 /  3. 32.100
  
  [8] =>   libswscale      2.  1.103 /  2.  1.103
  
  [9] =>   libswresample   0. 17.102 /  0. 17.102
  
  [10] =>   libpostproc    52.  2.100 / 52.  2.100
  
  [11] => Input #0, image2, from 'images/img%03d.jpg':
  
  [12] =>   Duration: 00:00:45.00, start: 0.000000, bitrate: N/A
  
  [13] =>     Stream #0:0: Video: mjpeg, yuvj420p, 200x300 [SAR 1:1 DAR 2:3], 0.07 fps, 0.33 tbr, 0.07 tbn, 0.07 tbc
  
  [14] => [libx264 @ 0x3283080] using SAR=1/1
  
  [15] => [libx264 @ 0x3283080] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
  
  [16] => [libx264 @ 0x3283080] profile High, level 1.2
  
  [17] => [libx264 @ 0x3283080] 264 - core 129 r2230 1cffe9f - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - 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=1 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
  
  [18] => Output #0, mp4, to 'videos/video.mp4':
  
  [19] =>   Metadata:
  
  [20] =>     encoder         : Lavf54.59.106
  
  [21] =>     Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuvj420p, 200x300 [SAR 1:1 DAR 2:3], q=-1--1, 16384 tbn, 0.07 tbc
  
  [22] => Stream mapping:
  
  [23] =>   Stream #0:0 -> #0:0 (mjpeg -> libx264)
  
  [24] => Press [q] to stop, [?] for help
  
  [25] => Input stream #0:0 frame changed from size:200x300 fmt:yuvj420p to size:200x300 fmt:yuvj444p
  
  [26] => frame=    3 fps=0.0 q=-1.0 Lsize=      43kB time=00:00:15.00 bitrate=  23.2kbits/s
  
  [27] => video:42kB audio:0kB subtitle:0 global headers:0kB muxing overhead 1.912722%
  
  [28] => [libx264 @ 0x3283080] frame I:1     Avg QP:18.97  size: 13250
  
  [29] => [libx264 @ 0x3283080] frame P:2     Avg QP:18.68  size: 14368
  
  [30] => [libx264 @ 0x3283080] mb I  I16..4:  0.8% 81.4% 17.8%
  
  [31] => [libx264 @ 0x3283080] mb P  I16..4:  0.0% 84.8% 15.2%  P16..4:  0.0%  0.0%  0.0%  0.0%  0.0%    skip: 0.0%
  
  [32] => [libx264 @ 0x3283080] 8x8 transform intra:83.7%
  
  [33] => [libx264 @ 0x3283080] coded y,uvDC,uvAC intra: 96.4% 99.2% 97.6%
  
  [34] => [libx264 @ 0x3283080] i16 v,h,dc,p:  0%  0% 100%  0%
  
  [35] => [libx264 @ 0x3283080] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 18% 13%  5%  8% 11%  8% 10%  7%
  
  [36] => [libx264 @ 0x3283080] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 14%  9%  7%  9% 13%  8%  7%  7%
  
  [37] => [libx264 @ 0x3283080] i8c dc,h,v,p: 45% 17% 26% 12%
  
  [38] => [libx264 @ 0x3283080] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [39] => [libx264 @ 0x3283080] kb/s:7.46

  )