Recherche avancée

Médias (91)

Autres articles (5)

  • Le plugin : Podcasts.

    14 juillet 2010, par

    Le problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
    Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
    Types de fichiers supportés dans les flux
    Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...)

  • Soumettre améliorations et plugins supplémentaires

    10 avril 2011

    Si vous avez développé une nouvelle extension permettant d’ajouter une ou plusieurs fonctionnalités utiles à MediaSPIP, faites le nous savoir et son intégration dans la distribution officielle sera envisagée.
    Vous pouvez utiliser la liste de discussion de développement afin de le faire savoir ou demander de l’aide quant à la réalisation de ce plugin. MediaSPIP étant basé sur SPIP, il est également possible d’utiliser le liste de discussion SPIP-zone de SPIP pour (...)

  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

Sur d’autres sites (2513)

  • ffmpeg : unsync audio after processing

    18 novembre 2013, par QuickSilver

    I am recording a video and using RecordRTC : WebRTC . After receiving the webm video and wav audio at server, I'm encoding it to a mp4 file using ffmpeg(executing shell command via php). But after encoding process, the audio is unsync with video (audio ends before video). How can I fix this ?

    js code is here

    ffmpeg command used is :

    ffmpeg -y -i 166890589.wav -i 166890589.webm -vcodec libx264 166890589.mp4

    Console output :

    ffmpeg version 0.8.9-6:0.8.9-0ubuntu0.13.04.1, Copyright (c) 2000-2013 the Libav developers
     built on Nov  9 2013 19:15:52 with gcc 4.7.3
    *** THIS PROGRAM IS DEPRECATED ***
    This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
    [wav @ 0x81caa60] max_analyze_duration reached
    Input #0, wav, from '166890589.wav':
     Duration: 00:00:07.05, bitrate: 1411 kb/s
       Stream #0.0: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
    [matroska,webm @ 0x823c340] Unknown entry 0x63C5
    [matroska,webm @ 0x823c340] Estimating duration from bitrate, this may be inaccurate

    Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 10.00 (10/1)
    Input #1, matroska,webm, from '166890589.webm':
     Duration: 00:00:08.40, start: 0.000000, bitrate: N/A
       Stream #1.0: Video: vp8, yuv420p, 320x240, PAR 1:1 DAR 4:3, 10 tbr, 1k tbn, 1k tbc (default)
    [buffer @ 0x8245620] w:320 h:240 pixfmt:yuv420p
    [libx264 @ 0x82618a0] using SAR=1/1
    [libx264 @ 0x82618a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
    [libx264 @ 0x82618a0] profile Main, level 1.1
    [libx264 @ 0x82618a0] 264 - core 123 r2189 35cf912 - 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=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=0 b_adapt=1 b_bias=0 direct=1 weightb=0 open_gop=1 weightp=2 keyint=250 keyint_min=10 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=1.25 aq=1:1.00
    Output #0, mp4, to '166890589.mp4':
     Metadata:
       encoder         : Lavf53.21.1
       Stream #0.0: Video: libx264, yuv420p, 320x240 [PAR 1:1 DAR 4:3], q=-1--1, 10 tbn, 10 tbc (default)
       Stream #0.1: Audio: libvo_aacenc, 44100 Hz, 2 channels, s16, 200 kb/s
    Stream mapping:
     Stream #1.0 -> #0.0
     Stream #0.0 -> #0.1
    Press ctrl-c to stop encoding
    frame=   84 fps=  0 q=25.0 Lsize=     260kB time=7.06 bitrate= 301.3kbits/s    
    video:83kB audio:172kB global headers:0kB muxing overhead 1.783102%
    frame I:1     Avg QP:17.52  size:  6554
    [libx264 @ 0x82618a0] frame P:41    Avg QP:19.07  size:  1555
    [libx264 @ 0x82618a0] frame B:42    Avg QP:20.01  size:   325
    [libx264 @ 0x82618a0] consecutive B-frames: 33.3%  0.0%  0.0% 66.7%
    [libx264 @ 0x82618a0] mb I  I16..4: 36.7%  0.0% 63.3%
    [libx264 @ 0x82618a0] mb P  I16..4:  3.8%  0.0%  5.0%  P16..4: 34.3%  9.8%  7.1%  0.0%  0.0%    skip:40.0%
    [libx264 @ 0x82618a0] mb B  I16..4:  1.4%  0.0%  0.1%  B16..8: 37.5%  5.5%  0.4%  direct: 2.5%  skip:52.5%  L0:41.4% L1:51.5% BI: 7.2%
    [libx264 @ 0x82618a0] coded y,uvDC,uvAC intra: 40.7% 76.2% 26.8% inter: 10.9% 22.5% 2.7%
    [libx264 @ 0x82618a0] i16 v,h,dc,p: 28% 34% 23% 15%
    [libx264 @ 0x82618a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 28% 21%  3%  4%  4%  5%  3%  3%
    [libx264 @ 0x82618a0] i8c dc,h,v,p: 49% 20% 26%  4%
    [libx264 @ 0x82618a0] Weighted P-Frames: Y:0.0% UV:0.0%
    [libx264 @ 0x82618a0] ref P L0: 62.7%  4.6% 16.3% 16.4%
    [libx264 @ 0x82618a0] ref B L0: 79.0% 21.0%
    [libx264 @ 0x82618a0] kb/s:80.00
  • Two nearly identical ffmpeg commands, one works, the other freezes up

    12 septembre 2019, par dylanjha

    In both of these examples, I’m passing two inputs to ffmpeg applying a filter to the first input, and outputting it all to a .mp4.

    Example 1

    ffmpeg -y -threads 4 -ss 23.536 -t 44.854 -i .tmp/processing/vid-one.webm -ss 13.516 -t 54.874 -i .tmp/processing/vid-two.webm -filter_complex "[0]scale=320:-1,pad=2*iw:2*ih:0:120[left];[1]scale=320:-1[right];[left][right]overlay=main_w/2:120,scale=640:480" -shortest .tmp/processing/temp-23536-68390.mp4

    Example 2

    ffmpeg -y -threads 4 -ss 68.39 -t 3.646 -i .tmp/processing/vid-one.webm -ss 58.37 -t 13.666 -i .tmp/processing/vid-two.webm -filter_complex "[0]scale=320:-1,pad=2*iw:2*ih:0:120[left];[1]scale=320:-1[right];[left][right]overlay=main_w/2:120,scale=640:480" -shortest .tmp/processing/temp-68390-72036.mp4

    In the logging output I can get an idea of where it gets hung up.

    Output Example 1

    the output gets to this frame= line and it updates the output like this

    ffmpeg version 2.7.2 Copyright (c) 2000-2015 the FFmpeg developers
     built with Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)
     configuration: --prefix=/usr/local/Cellar/ffmpeg/2.7.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --enable-opencl --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
     libavutil      54. 27.100 / 54. 27.100
     libavcodec     56. 41.100 / 56. 41.100
     libavformat    56. 36.100 / 56. 36.100
     libavdevice    56.  4.100 / 56.  4.100
     libavfilter     5. 16.101 /  5. 16.101
     libavresample   2.  1.  0 /  2.  1.  0
     libswscale      3.  1.101 /  3.  1.101
     libswresample   1.  2.100 /  1.  2.100
     libpostproc    53.  3.100 / 53.  3.100
    Input #0, matroska,webm, from '.tmp/processing/vid-one.webm':
     Metadata:
       encoder         : libwebm-0.2.1.0
       creation_time   : 2015-09-27 18:54:09
     Duration: 00:01:10.35, start: 0.000000, bitrate: 45 kb/s
       Stream #0:0(eng): Audio: opus, 48000 Hz, mono, fltp (default)
       Stream #0:1(eng): Video: vp8, yuv420p, 640x480, SAR 1:1 DAR 4:3, 1k tbr, 1k tbn, 1k tbc (default)
    Input #1, matroska,webm, from '.tmp/processing/vid-two.webm':
     Metadata:
       encoder         : libwebm-0.2.1.0
       creation_time   : 2015-09-27 18:54:19
     Duration: 00:00:59.58, start: 0.000000, bitrate: 356 kb/s
       Stream #1:0(eng): Audio: opus, 48000 Hz, mono, fltp (default)
       Stream #1:1(eng): Video: vp8, yuv420p, 640x480, SAR 1:1 DAR 4:3, 1k tbr, 1k tbn, 1k tbc (default)
    [libx264 @ 0x7faa59843e00] using SAR=1/1
    [libx264 @ 0x7faa59843e00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    [libx264 @ 0x7faa59843e00] profile High, level 5.2
    [libx264 @ 0x7faa59843e00] 264 - core 144 r2533 c8a773e - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=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/processing/temp-23536-68390.mp4':
     Metadata:
       encoder         : Lavf56.36.100
       Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 1k fps, 16k tbn, 1k tbc (default)
       Metadata:
         encoder         : Lavc56.41.100 libx264
       Stream #0:1(eng): Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 48000 Hz, mono, s16, 128 kb/s (default)
       Metadata:
         encoder         : Lavc56.41.100 libvo_aacenc
    Stream mapping:
     Stream #0:1 (vp8) -> scale (graph 0)
     Stream #1:1 (vp8) -> scale (graph 0)
     scale (graph 0) -> Stream #0:0 (libx264)
     Stream #0:0 -> #0:1 (opus (native) -> aac (libvo_aacenc))
    Press [q] to stop, [?] for help
    Input stream #0:1 frame changed from size:640x480 fmt:yuv420p to size:320x240 fmt:yuv420p
    Input stream #1:1 frame changed from size:640x480 fmt:yuv420p to size:1016x846 fmt:yuv420p
    frame=13321 fps=268 q=33.0 size=    1321kB time=00:00:41.85 bitrate= 258.5kbits/s dup=13frame=25895 fps=258 q=33.0 size=    2268kB time=00:00:44.81 bitrate= 414.5kbits/s dup=25frame=35230 fps=244 q=33.0 size=    2936kB time=00:00:44.81 bitrate= 536.6kbits/s dup=35frame=41866 fps=231 q=33.0 size=    3552kB time=00:00:44.81 bitrate= 649.4kbits/s dup=41Past duration 0.999992 too large
    frame=41868 fps=231 q=-1.0 Lsize=    4089kB time=00:00:44.85 bitrate= 746.8kbits/s dup=41862 drop=20    
    video:3108kB audio:479kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 13.986680%
    [libx264 @ 0x7faa59843e00] frame I:168   Avg QP:18.70  size: 12936
    [libx264 @ 0x7faa59843e00] frame P:10552 Avg QP:14.49  size:    37
    [libx264 @ 0x7faa59843e00] frame B:31148 Avg QP:17.67  size:    20
    [libx264 @ 0x7faa59843e00] consecutive B-frames:  0.8%  0.0%  0.0% 99.2%
    [libx264 @ 0x7faa59843e00] mb I  I16..4: 40.0% 39.7% 20.3%
    [libx264 @ 0x7faa59843e00] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.2%  0.0%  0.0%  0.0%  0.0%    skip:99.7%
    [libx264 @ 0x7faa59843e00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.0%  0.0%  0.0%  direct: 0.0%  skip:100.0%  L0: 7.4% L1:92.6% BI: 0.0%
    [libx264 @ 0x7faa59843e00] 8x8 transform intra:39.8% inter:54.0%
    [libx264 @ 0x7faa59843e00] coded y,uvDC,uvAC intra: 31.6% 26.7% 16.9% inter: 0.0% 0.1% 0.0%
    [libx264 @ 0x7faa59843e00] i16 v,h,dc,p: 68% 22%  9%  1%
    [libx264 @ 0x7faa59843e00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 45% 14%  1%  3%  5%  2%  5%  3%
    [libx264 @ 0x7faa59843e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 47% 10%  1%  2%  2%  3%  2%  3%
    [libx264 @ 0x7faa59843e00] i8c dc,h,v,p: 73% 13% 12%  2%
    [libx264 @ 0x7faa59843e00] Weighted P-Frames: Y:0.0% UV:0.0%
    [libx264 @ 0x7faa59843e00] ref P L0: 99.3%  0.4%  0.1%  0.2%
    [libx264 @ 0x7faa59843e00] ref B L0: 68.7% 31.3%
    [libx264 @ 0x7faa59843e00] ref B L1: 99.3%  0.7%
    [libx264 @ 0x7faa59843e00] kb/s:608.06

    Output Example 2

    When it gets to the frame= line, it hangs

    ffmpeg version 2.7.2 Copyright (c) 2000-2015 the FFmpeg developers
     built with Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)
     configuration: --prefix=/usr/local/Cellar/ffmpeg/2.7.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --enable-opencl --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
     libavutil      54. 27.100 / 54. 27.100
     libavcodec     56. 41.100 / 56. 41.100
     libavformat    56. 36.100 / 56. 36.100
     libavdevice    56.  4.100 / 56.  4.100
     libavfilter     5. 16.101 /  5. 16.101
     libavresample   2.  1.  0 /  2.  1.  0
     libswscale      3.  1.101 /  3.  1.101
     libswresample   1.  2.100 /  1.  2.100
     libpostproc    53.  3.100 / 53.  3.100
    Input #0, matroska,webm, from '.tmp/processing/vid-one.webm':
     Metadata:
       encoder         : libwebm-0.2.1.0
       creation_time   : 2015-09-27 18:54:09
     Duration: 00:01:10.35, start: 0.000000, bitrate: 45 kb/s
       Stream #0:0(eng): Audio: opus, 48000 Hz, mono, fltp (default)
       Stream #0:1(eng): Video: vp8, yuv420p, 640x480, SAR 1:1 DAR 4:3, 1k tbr, 1k tbn, 1k tbc (default)
    Input #1, matroska,webm, from '.tmp/processing/vid-two.webm':
     Metadata:
       encoder         : libwebm-0.2.1.0
       creation_time   : 2015-09-27 18:54:19
     Duration: 00:00:59.58, start: 0.000000, bitrate: 356 kb/s
       Stream #1:0(eng): Audio: opus, 48000 Hz, mono, fltp (default)
       Stream #1:1(eng): Video: vp8, yuv420p, 640x480, SAR 1:1 DAR 4:3, 1k tbr, 1k tbn, 1k tbc (default)
    [libx264 @ 0x7fdb4a802600] using SAR=1/1
    [libx264 @ 0x7fdb4a802600] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    [libx264 @ 0x7fdb4a802600] profile High, level 5.2
    [libx264 @ 0x7fdb4a802600] 264 - core 144 r2533 c8a773e - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=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/processing/temp-68390-72036.mp4':
     Metadata:
       encoder         : Lavf56.36.100
       Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 1k fps, 16k tbn, 1k tbc (default)
       Metadata:
         encoder         : Lavc56.41.100 libx264
       Stream #0:1(eng): Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 48000 Hz, mono, s16, 128 kb/s (default)
       Metadata:
         encoder         : Lavc56.41.100 libvo_aacenc
    Stream mapping:
     Stream #0:1 (vp8) -> scale (graph 0)
     Stream #1:1 (vp8) -> scale (graph 0)
     scale (graph 0) -> Stream #0:0 (libx264)
     Stream #0:0 -> #0:1 (opus (native) -> aac (libvo_aacenc))
    Press [q] to stop, [?] for help
    Input stream #0:1 frame changed from size:640x480 fmt:yuv420p to size:320x240 fmt:yuv420p
    Input stream #1:1 frame changed from size:640x480 fmt:yuv420p to size:1016x846 fmt:yuv420p
    frame=    0 fps=0.0 q=0.0 Lsize=      17kB time=00:00:01.97 bitrate=  71.8kbits/s

    version : ffmpeg version 2.7.2

  • Two nearly identical ffmpeg commands, one works, the other freezes up

    28 septembre 2015, par dylanjha

    In both of these examples, I’m passing two inputs to ffmpeg applying a filter to the first input, and outputting it all to a .mp4.

    Example 1

    ffmpeg -y -threads 4 -ss 23.536 -t 44.854 -i .tmp/processing/vid-one.webm -ss 13.516 -t 54.874 -i .tmp/processing/vid-two.webm -filter_complex "[0]scale=320:-1,pad=2*iw:2*ih:0:120[left];[1]scale=320:-1[right];[left][right]overlay=main_w/2:120,scale=640:480" -shortest .tmp/processing/temp-23536-68390.mp4

    Example 2

    ffmpeg -y -threads 4 -ss 68.39 -t 3.646 -i .tmp/processing/vid-one.webm -ss 58.37 -t 13.666 -i .tmp/processing/vid-two.webm -filter_complex "[0]scale=320:-1,pad=2*iw:2*ih:0:120[left];[1]scale=320:-1[right];[left][right]overlay=main_w/2:120,scale=640:480" -shortest .tmp/processing/temp-68390-72036.mp4

    In the logging output I can get an idea of where it gets hung up.

    Output Example 1

    the output gets to this frame= line and it updates the output like this

    ffmpeg version 2.7.2 Copyright (c) 2000-2015 the FFmpeg developers
     built with Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)
     configuration: --prefix=/usr/local/Cellar/ffmpeg/2.7.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --enable-opencl --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
     libavutil      54. 27.100 / 54. 27.100
     libavcodec     56. 41.100 / 56. 41.100
     libavformat    56. 36.100 / 56. 36.100
     libavdevice    56.  4.100 / 56.  4.100
     libavfilter     5. 16.101 /  5. 16.101
     libavresample   2.  1.  0 /  2.  1.  0
     libswscale      3.  1.101 /  3.  1.101
     libswresample   1.  2.100 /  1.  2.100
     libpostproc    53.  3.100 / 53.  3.100
    Input #0, matroska,webm, from '.tmp/processing/vid-one.webm':
     Metadata:
       encoder         : libwebm-0.2.1.0
       creation_time   : 2015-09-27 18:54:09
     Duration: 00:01:10.35, start: 0.000000, bitrate: 45 kb/s
       Stream #0:0(eng): Audio: opus, 48000 Hz, mono, fltp (default)
       Stream #0:1(eng): Video: vp8, yuv420p, 640x480, SAR 1:1 DAR 4:3, 1k tbr, 1k tbn, 1k tbc (default)
    Input #1, matroska,webm, from '.tmp/processing/vid-two.webm':
     Metadata:
       encoder         : libwebm-0.2.1.0
       creation_time   : 2015-09-27 18:54:19
     Duration: 00:00:59.58, start: 0.000000, bitrate: 356 kb/s
       Stream #1:0(eng): Audio: opus, 48000 Hz, mono, fltp (default)
       Stream #1:1(eng): Video: vp8, yuv420p, 640x480, SAR 1:1 DAR 4:3, 1k tbr, 1k tbn, 1k tbc (default)
    [libx264 @ 0x7faa59843e00] using SAR=1/1
    [libx264 @ 0x7faa59843e00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    [libx264 @ 0x7faa59843e00] profile High, level 5.2
    [libx264 @ 0x7faa59843e00] 264 - core 144 r2533 c8a773e - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=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/processing/temp-23536-68390.mp4':
     Metadata:
       encoder         : Lavf56.36.100
       Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 1k fps, 16k tbn, 1k tbc (default)
       Metadata:
         encoder         : Lavc56.41.100 libx264
       Stream #0:1(eng): Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 48000 Hz, mono, s16, 128 kb/s (default)
       Metadata:
         encoder         : Lavc56.41.100 libvo_aacenc
    Stream mapping:
     Stream #0:1 (vp8) -> scale (graph 0)
     Stream #1:1 (vp8) -> scale (graph 0)
     scale (graph 0) -> Stream #0:0 (libx264)
     Stream #0:0 -> #0:1 (opus (native) -> aac (libvo_aacenc))
    Press [q] to stop, [?] for help
    Input stream #0:1 frame changed from size:640x480 fmt:yuv420p to size:320x240 fmt:yuv420p
    Input stream #1:1 frame changed from size:640x480 fmt:yuv420p to size:1016x846 fmt:yuv420p
    frame=13321 fps=268 q=33.0 size=    1321kB time=00:00:41.85 bitrate= 258.5kbits/s dup=13frame=25895 fps=258 q=33.0 size=    2268kB time=00:00:44.81 bitrate= 414.5kbits/s dup=25frame=35230 fps=244 q=33.0 size=    2936kB time=00:00:44.81 bitrate= 536.6kbits/s dup=35frame=41866 fps=231 q=33.0 size=    3552kB time=00:00:44.81 bitrate= 649.4kbits/s dup=41Past duration 0.999992 too large
    frame=41868 fps=231 q=-1.0 Lsize=    4089kB time=00:00:44.85 bitrate= 746.8kbits/s dup=41862 drop=20    
    video:3108kB audio:479kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 13.986680%
    [libx264 @ 0x7faa59843e00] frame I:168   Avg QP:18.70  size: 12936
    [libx264 @ 0x7faa59843e00] frame P:10552 Avg QP:14.49  size:    37
    [libx264 @ 0x7faa59843e00] frame B:31148 Avg QP:17.67  size:    20
    [libx264 @ 0x7faa59843e00] consecutive B-frames:  0.8%  0.0%  0.0% 99.2%
    [libx264 @ 0x7faa59843e00] mb I  I16..4: 40.0% 39.7% 20.3%
    [libx264 @ 0x7faa59843e00] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.2%  0.0%  0.0%  0.0%  0.0%    skip:99.7%
    [libx264 @ 0x7faa59843e00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.0%  0.0%  0.0%  direct: 0.0%  skip:100.0%  L0: 7.4% L1:92.6% BI: 0.0%
    [libx264 @ 0x7faa59843e00] 8x8 transform intra:39.8% inter:54.0%
    [libx264 @ 0x7faa59843e00] coded y,uvDC,uvAC intra: 31.6% 26.7% 16.9% inter: 0.0% 0.1% 0.0%
    [libx264 @ 0x7faa59843e00] i16 v,h,dc,p: 68% 22%  9%  1%
    [libx264 @ 0x7faa59843e00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 45% 14%  1%  3%  5%  2%  5%  3%
    [libx264 @ 0x7faa59843e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 47% 10%  1%  2%  2%  3%  2%  3%
    [libx264 @ 0x7faa59843e00] i8c dc,h,v,p: 73% 13% 12%  2%
    [libx264 @ 0x7faa59843e00] Weighted P-Frames: Y:0.0% UV:0.0%
    [libx264 @ 0x7faa59843e00] ref P L0: 99.3%  0.4%  0.1%  0.2%
    [libx264 @ 0x7faa59843e00] ref B L0: 68.7% 31.3%
    [libx264 @ 0x7faa59843e00] ref B L1: 99.3%  0.7%
    [libx264 @ 0x7faa59843e00] kb/s:608.06

    Output Example 2

    When it gets to the frame= line, it hangs

    ffmpeg version 2.7.2 Copyright (c) 2000-2015 the FFmpeg developers
     built with Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)
     configuration: --prefix=/usr/local/Cellar/ffmpeg/2.7.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --enable-opencl --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
     libavutil      54. 27.100 / 54. 27.100
     libavcodec     56. 41.100 / 56. 41.100
     libavformat    56. 36.100 / 56. 36.100
     libavdevice    56.  4.100 / 56.  4.100
     libavfilter     5. 16.101 /  5. 16.101
     libavresample   2.  1.  0 /  2.  1.  0
     libswscale      3.  1.101 /  3.  1.101
     libswresample   1.  2.100 /  1.  2.100
     libpostproc    53.  3.100 / 53.  3.100
    Input #0, matroska,webm, from '.tmp/processing/vid-one.webm':
     Metadata:
       encoder         : libwebm-0.2.1.0
       creation_time   : 2015-09-27 18:54:09
     Duration: 00:01:10.35, start: 0.000000, bitrate: 45 kb/s
       Stream #0:0(eng): Audio: opus, 48000 Hz, mono, fltp (default)
       Stream #0:1(eng): Video: vp8, yuv420p, 640x480, SAR 1:1 DAR 4:3, 1k tbr, 1k tbn, 1k tbc (default)
    Input #1, matroska,webm, from '.tmp/processing/vid-two.webm':
     Metadata:
       encoder         : libwebm-0.2.1.0
       creation_time   : 2015-09-27 18:54:19
     Duration: 00:00:59.58, start: 0.000000, bitrate: 356 kb/s
       Stream #1:0(eng): Audio: opus, 48000 Hz, mono, fltp (default)
       Stream #1:1(eng): Video: vp8, yuv420p, 640x480, SAR 1:1 DAR 4:3, 1k tbr, 1k tbn, 1k tbc (default)
    [libx264 @ 0x7fdb4a802600] using SAR=1/1
    [libx264 @ 0x7fdb4a802600] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    [libx264 @ 0x7fdb4a802600] profile High, level 5.2
    [libx264 @ 0x7fdb4a802600] 264 - core 144 r2533 c8a773e - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=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/processing/temp-68390-72036.mp4':
     Metadata:
       encoder         : Lavf56.36.100
       Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 1k fps, 16k tbn, 1k tbc (default)
       Metadata:
         encoder         : Lavc56.41.100 libx264
       Stream #0:1(eng): Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 48000 Hz, mono, s16, 128 kb/s (default)
       Metadata:
         encoder         : Lavc56.41.100 libvo_aacenc
    Stream mapping:
     Stream #0:1 (vp8) -> scale (graph 0)
     Stream #1:1 (vp8) -> scale (graph 0)
     scale (graph 0) -> Stream #0:0 (libx264)
     Stream #0:0 -> #0:1 (opus (native) -> aac (libvo_aacenc))
    Press [q] to stop, [?] for help
    Input stream #0:1 frame changed from size:640x480 fmt:yuv420p to size:320x240 fmt:yuv420p
    Input stream #1:1 frame changed from size:640x480 fmt:yuv420p to size:1016x846 fmt:yuv420p
    frame=    0 fps=0.0 q=0.0 Lsize=      17kB time=00:00:01.97 bitrate=  71.8kbits/s

    version : ffmpeg version 2.7.2