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• flvEncoder .flv output won't convert to .mp4 with ffmpeg

  31 juillet 2013, par Emma Assin

  My current project involves creating a .flv using AIR (using https://github.com/zeropointnine/leelib/tree/master/src/leelib/util/flvEncoder) - which then has to be converted into an .mp4, for which we are using ffmpeg.

  The .mp4 output is the correct dimensions and duration, but blank (no images). Audio is not an issue as the original output has no audio.

  ffmpeg version N-55020-g768e40b Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Jul 28 2013 18:05:44 with gcc 4.7.3 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --e
  
  nable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable
  
  -libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enab
  
  le-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheo
  
  ra --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --en
  
  able-libxavs --enable-libxvid --enable-zlib
  
    libavutil      52. 40.100 / 52. 40.100
  
    libavcodec     55. 19.100 / 55. 19.100
  
    libavformat    55. 12.102 / 55. 12.102
  
    libavdevice    55.  3.100 / 55.  3.100
  
    libavfilter     3. 81.103 /  3. 81.103
  
    libswscale      2.  4.100 /  2.  4.100
  
    libswresample   0. 17.103 /  0. 17.103
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, flv, from 'testWithAudio.flv':
  
    Metadata:
  
      canSeekToEnd    : true
  
      metadatacreator : FlvEncoder v0.9 Lee Felarca
  
    Duration: 00:00:44.77, start: 0.000000, bitrate: 56730 kb/s
  
      Stream #0:0: Video: flashsv, bgr24, 400x400, 30 tbr, 1k tbn, 1k tbc
  
      Stream #0:1: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
  
  No pixel format specified, yuv444p for H.264 encoding chosen.
  
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  [libx264 @ 00000000002e1da0] using cpu capabilities: MMX2 SSE2Fast SSEMisalign LZCNT
  
  [libx264 @ 00000000002e1da0] profile High 4:4:4 Predictive, level 2.1, 4:4:4 8-bit
  
  [libx264 @ 00000000002e1da0] 264 - core 135 r2345 f0c1c53 - 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=4 threads=1 lookahead_threads=1 sl
  
  iced_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 dire
  
  ct=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, mp4, to 'testWithAudio.mp4':
  
    Metadata:
  
      canSeekToEnd    : true
  
      metadatacreator : FlvEncoder v0.9 Lee Felarca
  
      encoder         : Lavf55.12.102
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p, 400x400, q=-1--1, 15360 tbn, 30 tbc
  
      Stream #0:1: Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (flashsv -> libx264)
  
    Stream #0:1 -> #0:1 (pcm_s16le -> libvo_aacenc)
  
  Press [q] to stop, [?] for help
  
  frame= 1343 fps= 25 q=29.0 Lsize=    2680kB time=00:00:44.70 bitrate= 491.2kbits/s
  
  video:1943kB audio:691kB subtitle:0 global headers:0kB muxing overhead 1.756713%
  
  [libx264 @ 00000000002e1da0] frame I:25    Avg QP:20.44  size: 14523
  
  [libx264 @ 00000000002e1da0] frame P:614   Avg QP:23.20  size:  2319
  
  [libx264 @ 00000000002e1da0] frame B:704   Avg QP:24.59  size:   287
  
  [libx264 @ 00000000002e1da0] consecutive B-frames: 25.6% 11.0%  7.4% 56.0%
  
  [libx264 @ 00000000002e1da0] mb I  I16..4: 17.6% 67.0% 15.3%
  
  [libx264 @ 00000000002e1da0] mb P  I16..4:  7.6%  9.9%  0.8%  P16..4: 28.0%  8.3%  4.0%  0.0%  0.0%    skip:41.4%
  
  [libx264 @ 00000000002e1da0] mb B  I16..4:  0.4%  0.5%  0.0%  B16..8: 16.3%  1.1%  0.1%  direct: 0.2%  skip:81.4%  L0:39.7% L
  
  1:57.4% BI: 2.8%
  
  [libx264 @ 00000000002e1da0] 8x8 transform intra:56.3% inter:85.5%
  
  [libx264 @ 00000000002e1da0] coded y,u,v intra: 35.7% 17.0% 19.1% inter: 7.7% 3.8% 3.4%
  
  [libx264 @ 00000000002e1da0] i16 v,h,dc,p: 26% 28% 17% 30%
  
  [libx264 @ 00000000002e1da0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 21% 33%  4%  4%  5%  4%  4%  4%
  
  [libx264 @ 00000000002e1da0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 21% 16%  5%  6%  9%  6%  6%  6%
  
  [libx264 @ 00000000002e1da0] Weighted P-Frames: Y:6.5% UV:3.3%
  
  [libx264 @ 00000000002e1da0] ref P L0: 56.8% 16.5% 18.2%  8.0%  0.6%
  
  [libx264 @ 00000000002e1da0] ref B L0: 82.3% 14.1%  3.7%
  
  [libx264 @ 00000000002e1da0] ref B L1: 93.7%  6.3%
  
  [libx264 @ 00000000002e1da0] kb/s:355.47

  Any ideas ?

• Error : ffmpeg -php with centos 6.4

  3 août 2013, par Kamoliddin Usmonov

  I have problem with ffmpeg on centos 6.4.
  FFmpeg is working, but FFmpeg -php not working. When I check ffmpeg -php error

  ffmpeg version N-55188-gbdccfc3 Copyright (c) 2000-2013 the FFmpeg developers
 built on Aug  3 2013 01:16:57 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-3)
 configuration: --enable-gpl --enable-libfdk_aac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree
 libavutil      52. 40.100 / 52. 40.100
 libavcodec     55. 19.100 / 55. 19.100
 libavformat    55. 12.102 / 55. 12.102
 libavdevice    55.  3.100 / 55.  3.100
 libavfilter     3. 82.100 /  3. 82.100
 libswscale      2.  4.100 /  2.  4.100
 libswresample   0. 17.103 /  0. 17.103
 libpostproc    52.  3.100 / 52.  3.100

  Unrecognized option 'php'.
 Error splitting the argument list: Option not found

  php -r 'phpinfo();' | grep ffmpeg

  PHP Warning : PHP Startup : Unable to load dynamic library '/usr/lib/php/modules/ffmpeg.so' - /usr/lib/php/modules/ffmpeg.so : cannot open shared object file : No such file or directory in Unknown on line 0
  PHP Warning : PHP Startup : Unable to load dynamic library '/usr/lib/php/modules/ffmpeg.so' - /usr/lib/php/modules/ffmpeg.so : cannot open shared object file : No such file or directory in Unknown on line 0
  PHP Warning : PHP Startup : Unable to load dynamic library '/usr/lib/php/modules/ffmpeg.so' - /usr/lib/php/modules/ffmpeg.so : cannot open shared object file : No such file or directory in Unknown on line 0
  /etc/php.d/ffmpeg.ini,

  Please help me ! Beforehand thanks =)

• webm to mp4 conversion using ffmpeg

  2 décembre 2015, par Pavan K

  When I try to convert a webm file to mp4 the output is very very choppy and it appears as if many frames have been dropped by ffmpeg

  I used the following commands to convert

  ffmpeg -i movie.webm movie.mp4
  
  ffmpeg -i movie.webm -vcodec libx264 movie.mp4
  
  ffmpeg -i movie.webm -vcodec libx264 -qscale 0 movie.mp4

  All of them have the same problem. When I use ffprobe it seems to show the frames more or less properly.

  UPDATE :

   built on Jun 14 2013 14:31:50 with gcc 4.7 (Ubuntu/Linaro 4.7.2-2ubuntu1)
  
    configuration: --prefix=/home/user2/ffmpeg_build --extra-cflags=-I/home/user2/ffmpeg_build/include --extra-ldflags=-L/home/pavan4/ffmpeg_build/lib --bindir=/home/pavan4/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab
  
    libavutil      52. 35.101 / 52. 35.101
  
    libavcodec     55. 16.100 / 55. 16.100
  
    libavformat    55.  8.102 / 55.  8.102
  
    libavdevice    55.  2.100 / 55.  2.100
  
    libavfilter     3. 77.101 /  3. 77.101
  
    libswscale      2.  3.100 /  2.  3.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Hyper fast Audio and Video encoder
  
  usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
  
  
  
  Use -h to get full help or, even better, run 'man ffmpeg'
  
  
  
  Input #0, matroska,webm, from '1.webm':
  
    Duration: 00:00:10.64, start: 0.000000, bitrate: 5024 kb/s
  
      Stream #0:0(eng): Video: vp8, yuv420p, 1280x720, SAR 1:1 DAR 16:9, 1k fps, 1k tbr, 1k tbn, 1k tbc (default)
  
  [libx264 @ 0x1d966a0] using SAR=1/1
  
  [libx264 @ 0x1d966a0] MB rate (3600000) > level limit (2073600)
  
  [libx264 @ 0x1d966a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  [libx264 @ 0x1d966a0] profile High, level 5.2
  
  [libx264 @ 0x1d966a0] 264 - core 133 r2 a3ac64b - 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=12 lookahead_threads=2 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, mp4, to '1_conv4.mp4':
  
    Metadata:
  
      encoder         : Lavf55.8.102
  
      Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 16k tbn, 1k tbc (default)
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (vp8 -> libx264)
  
  Press [q] to stop, [?] for help
  
  frame=  168 fps=0.0 q=33.0 size=      62kB time=00:00:00.11 bitrate=4606.0kbits/frame=  293 fps=230 q=33.0 size=     138kB time=00:00:00.23 bitrate=4809.7kbits/
  
  
  
  video:5620kB audio:0kB subtitle:0 global headers:0kB muxing overhead 2.212461%
  
  [libx264 @ 0x1d966a0] frame I:46    Avg QP:18.50  size: 39849
  
  [libx264 @ 0x1d966a0] frame P:2940  Avg QP:18.27  size:  1222
  
  [libx264 @ 0x1d966a0] frame B:7651  Avg QP:17.68  size:    43
  
  [libx264 @ 0x1d966a0] consecutive B-frames:  4.0%  0.2%  0.3% 95.5%
  
  [libx264 @ 0x1d966a0] mb I  I16..4: 19.9% 63.2% 16.9%
  
  [libx264 @ 0x1d966a0] mb P  I16..4:  0.2%  0.5%  0.1%  P16..4:  3.9%  1.1%  0.6%  0.0%  0.0%    skip:93.6%
  
  [libx264 @ 0x1d966a0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.2%  0.0%  0.0%  direct: 0.0%  skip:99.8%  L0:25.1% L1:74.9% BI: 0.0%
  
  [libx264 @ 0x1d966a0] 8x8 transform intra:63.6% inter:75.9%
  
  [libx264 @ 0x1d966a0] coded y,uvDC,uvAC intra: 61.5% 53.4% 24.4% inter: 0.5% 0.5% 0.0%
  
  [libx264 @ 0x1d966a0] i16 v,h,dc,p: 52% 19% 19% 11%
  
  [libx264 @ 0x1d966a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 17% 13%  4%  6%  9%  5%  8%  6%
  
  [libx264 @ 0x1d966a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 18% 14%  5%  8% 10%  6%  6%  3%
  
  [libx264 @ 0x1d966a0] i8c dc,h,v,p: 55% 17% 24%  4%
  
  [libx264 @ 0x1d966a0] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x1d966a0] ref P L0: 82.5% 13.2%  4.0%  0.3%
  
  [libx264 @ 0x1d966a0] ref B L0: 60.2% 39.2%  0.6%
  
  [libx264 @ 0x1d966a0] ref B L1: 98.5%  1.5%
  
  [libx264 @ 0x1d966a0] kb/s:4327.77