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• FFMPEG Converted Video Not Working In HTML5

  27 novembre 2015, par Suprabhat Biswal

  Converted Avi to Mp4 using FFMPEG, Converted video not working in html
  5

  I have a section in my web page where user can upload any types of videos of any format , currently only restricted to .mp4 and .avi. After successfull upload i have displayed the same video to the user. I have bind the path in HTML5 video so that the user can view the content he/she has uploded. Video with extension .mp4 no doubt are working properly as HTML5 support them. Tricky part is it don’t support Avi files. Now here what the problem has arised. In order to display avi videos i have used FFMPEG to convert videos with extension .avi to .mp4. With lots of googling and reading forum, i have succesfully converted avi videos to mp4 . Here’s what i have used :-

  1. ffmpeg -i input.avi -acodec libfaac -b:a 128k -vcodec mpeg4 -b:v 1200k -flags +aic+mv4 output.mp4

  2. ffmpeg -i input.avi -c:v libx264 -b:a 128k -vcodec mpeg4 -b:v 1200k -flags +aic+mv4 output.mp4

  Above two are working perfectly, they have succesfully converted the video. But when i run them on browser in HTML5 and in new tab (Flash Player Plugin Installed), HTML5 doesn’t play it and flash player return an error message "Video can’t be played because the file is corrupt". But when i played them on KMplayer and in Window media player they are running perfectly.

  I have been to various threads in stackoverflow related to convert avi to mp4 and here i found following in one of the forum. where one of user has accepted this a correct answer but it ain’t worked out for me.

  3. ffmpeg -y -i sample.avi -b:v 1500k -vcodec libx264 -vpre slow -vpre baseline -g 30 sample.mp4

  Above argument returned me following error "File for preset ’slow’ not found".

  Following my futher searches i came across this thread ffmpeg convert mov file to mp4 for HTML5 video tag IE9. Here following argument worked perfectly and it able to convert video in such way that it is playble on browser.

  4. ffmpeg -y -i input.avi -vcodec libx264 -vprofile high -preset slow -b:v 500k -maxrate 500k -bufsize 1000k -vf scale=-1:480 -threads 0 -acodec libvo_aacenc -b:a 128k -pix_fmt yuv420p output.mp4.

  Problem i faced here was video is converted to 420p reso which quality is noty upto mark. Smaller resolution videos are been enlarged and seems pixelated

  Thus, i had to finally put up a question. I will be very obliged if someone can give a solution for above problem. I need to convert an avi video to mp4 supported by HTML5 video tag. It should able to play it on browser and during conversion of video it should maintain original audio and video quality plus resolution.

  Thanks

  My C# Code :

          public void Create(string input, string output, string parametri, string ThumbnailPhysicalPath, int ConvertType)
  
          {
  
              ffmpeg = new Process();
  
  
  
              if (ConvertType == Convert.ToInt32(ConversionType.Thumbnail))
  
                  ffmpeg.StartInfo.Arguments = " -i \"" + input + "\" -vframes 1 \"" + output + "\"";
  
              else if (ConvertType == Convert.ToInt32(ConversionType.AviToMp4))
  
                  ffmpeg.StartInfo.Arguments = " -i \"" + input + "\" -c:v libx264 -b:a 128k -vcodec mpeg4 -b:v 1200k -flags +aic+mv4 \"" + output + "\"";
  
                  //ffmpeg.StartInfo.Arguments = " -i \"" + input + "\" -vcodec libx264 -vprofile high -preset slow -b:v 500k -maxrate 500k -bufsize 1000k -vf scale=-1:480 -threads 0 -acodec libvo_aacenc -b:a 128k -pix_fmt yuv420p \"" + output + "\"";
  
              ffmpeg.StartInfo.FileName = ThumbnailPhysicalPath + @"ffmpeg.exe";
  
              ffmpeg.StartInfo.UseShellExecute = false;
  
              ffmpeg.StartInfo.RedirectStandardOutput = true;
  
              ffmpeg.StartInfo.RedirectStandardError = true;
  
              ffmpeg.StartInfo.CreateNoWindow = true;
  
              try
  
              {
  
                  ffmpeg.Start();
  
                  ffmpeg.WaitForExit();
  
                  string error = ffmpeg.StandardError.ReadToEnd();
  
              }
  
              catch (Exception Ex)
  
              {
  
                  Common.WriteLog("Exception occurred during conversion. Error Message :- " + Ex.Message + "\n Input Parameter :- " + input+ "\n Output Paramenter :- "+ output);
  
              }
  
              finally
  
              {
  
                  ffmpeg.Close();
  
                  if (ConvertType == Convert.ToInt32(ConversionType.AviToMp4))
  
                      UpdateConvertedVideoDetails(input,output);
  
              }
  
          }

  Command Prompt FFMPEG Output :-

  Sample 3 Result :-

  D:\Client\WebSite\Converter_Tools>ffmpeg -y -i sample.avi -b:v 1500k -vcodec libx264 -vpre slow -vpre baseline -g 30 sample.mp4
  
  ffmpeg version N-70239-g111d79a Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 4.9.2 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libblu
  
  ray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrw
  
  b --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --
  
  enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enab
  
  le-zlib
  
    libavutil      54. 19.100 / 54. 19.100
  
    libavcodec     56. 26.100 / 56. 26.100
  
    libavformat    56. 23.105 / 56. 23.105
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 11.101 /  5. 11.101
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [avi @ 037c8480] non-interleaved AVI
  
  Guessed Channel Layout for  Input Stream #0.1 : mono
  
  Input #0, avi, from 'sample.avi':
  
    Duration: 00:00:34.00, start: 0.000000, bitrate: 1433 kb/s
  
      Stream #0:0: Video: cinepak (cvid / 0x64697663), rgb24, 320x240, 15 fps, 15 tbr, 15 tbn, 15 tbc
  
      Stream #0:1: Audio: pcm_u8 ([1][0][0][0] / 0x0001), 22050 Hz, 1 channels, u8, 176 kb/s
  
  File for preset 'slow' not found

  Sample 4 Result :-

  D:\Client\WebSite\Converter_Tools>ffmpeg -y -i input.avi -vcodec libx264 -vprofile high -preset slow -b:v 500k -maxrate 500k -bufsize 1000k -vf scale=-1:480 -threads 0 -acodec libvo_
  
  aacenc -b:a 128k -pix_fmt yuv420p output.mp4
  
  ffmpeg version N-70239-g111d79a Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 4.9.2 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libblu
  
  ray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrw
  
  b --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --
  
  enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enab
  
  le-zlib
  
    libavutil      54. 19.100 / 54. 19.100
  
    libavcodec     56. 26.100 / 56. 26.100
  
    libavformat    56. 23.105 / 56. 23.105
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 11.101 /  5. 11.101
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, avi, from 'input.avi':
  
    Duration: 00:00:03.93, start: 0.000000, bitrate: 3255 kb/s
  
      Stream #0:0: Video: msrle ([1][0][0][0] / 0x0001), pal8, 300x250, 3301 kb/s, 15 fps, 15 tbr, 15 tbn, 15 tbc
  
  [libx264 @ 002ec860] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  [libx264 @ 002ec860] profile High, level 2.2
  
  [libx264 @ 002ec860] 264 - core 144 r2525 40bb568 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subm
  
  e=8 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 i
  
  nterlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=15 scenecut=40 intra_refresh=0 rc_lookahead=50 rc
  
  =cbr mbtree=1 bitrate=500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=500 vbv_bufsize=1000 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'output.mp4':
  
    Metadata:
  
      encoder         : Lavf56.23.105
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 576x480, q=-1--1, 500 kb/s, 15 fps, 15360 tbn, 15 tbc
  
      Metadata:
  
        encoder         : Lavc56.26.100 libx264
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (msrle (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  frame=   59 fps= 30 q=-1.0 Lsize=     229kB time=00:00:03.80 bitrate= 493.5kbits/s
  
  video:227kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.637976%
  
  [libx264 @ 002ec860] frame I:3     Avg QP:26.53  size: 10657
  
  [libx264 @ 002ec860] frame P:25    Avg QP:30.49  size:  5608
  
  [libx264 @ 002ec860] frame B:31    Avg QP:32.26  size:  1935
  
  [libx264 @ 002ec860] consecutive B-frames: 22.0% 16.9% 20.3% 40.7%
  
  [libx264 @ 002ec860] mb I  I16..4: 16.7% 69.0% 14.4%
  
  [libx264 @ 002ec860] mb P  I16..4: 11.1% 29.9%  3.8%  P16..4: 21.3%  6.8%  2.6%  0.0%  0.0%    skip:24.6%
  
  [libx264 @ 002ec860] mb B  I16..4:  1.7%  3.0%  0.3%  B16..8: 29.7%  5.6%  0.8%  direct: 2.1%  skip:56.8%  L0:50.5% L1:45.6% BI: 3.9%
  
  [libx264 @ 002ec860] 8x8 transform intra:66.5% inter:79.4%
  
  [libx264 @ 002ec860] direct mvs  spatial:93.5% temporal:6.5%
  
  [libx264 @ 002ec860] coded y,uvDC,uvAC intra: 40.3% 48.8% 25.7% inter: 12.4% 8.4% 1.4%
  
  [libx264 @ 002ec860] i16 v,h,dc,p: 19% 59%  6% 17%
  
  [libx264 @ 002ec860] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 25% 16%  7%  8%  6% 11%  7% 10%
  
  [libx264 @ 002ec860] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 21%  9%  7%  9%  8% 10%  7% 10%
  
  [libx264 @ 002ec860] i8c dc,h,v,p: 41% 33% 13% 13%
  
  [libx264 @ 002ec860] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 002ec860] ref P L0: 67.6%  8.1%  9.6%  5.4%  6.6%  2.8%
  
  [libx264 @ 002ec860] ref B L0: 84.6% 10.5%  3.9%  1.0%
  
  [libx264 @ 002ec860] ref B L1: 95.9%  4.1%
  
  [libx264 @ 002ec860] kb/s:472.20

• ffmpeg : corrupt audio in usage of avfoundation

  3 janvier 2016, par Andy

  I am trying to record my desktop screen (MacBook Pro (Retina, 15-inch, Mid 2014), OSX 10.10.5) with audio. First, I have to find the devices for recording, video:1 and audio:0 in my case.

  User@User-MacBook-Pro:~/test$ ffmpeg -hide_banner -f avfoundation -list_devices true -i ""
  
  [AVFoundation input device @ 0x7ff19a422320] AVFoundation video devices:
  
  [AVFoundation input device @ 0x7ff19a422320] [0] FaceTime HD Camera
  
  [AVFoundation input device @ 0x7ff19a422320] [1] Capture screen 0
  
  [AVFoundation input device @ 0x7ff4b9c22320] [2] Capture screen 1
  
  [AVFoundation input device @ 0x7ff19a422320] AVFoundation audio devices:
  
  [AVFoundation input device @ 0x7ff19a422320] [0] Soundflower (2ch)
  
  [AVFoundation input device @ 0x7ff19a422320] [1] Built-in Microphone
  
  [AVFoundation input device @ 0x7ff19a422320] [2] Soundflower (64ch)
  
  : Input/output error

  Then I run to capture the screen :

  ffmpeg -f avfoundation -i "1:0" out_desktop.mkv

  and the audio of the output stutters terribly.
  But if I use the second external screen (which is connect via HDMI) :

  ffmpeg -f avfoundation -i "2:0" out_ext.mkv

  Then I have no audio problems.

  So, what could be the cause of this behaviour ? Somehow the video device "Capture screen 0" causes the audio stutter.

  Here are the full outputs of the two commands above, Screen 0 :

  User@User-MacBook-Pro:~/test$ ffmpeg -f avfoundation -i "1:0" out.mkv
  
  ffmpeg version 2.8.4 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with Apple LLVM version 7.0.2 (clang-700.1.81)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-libfreetype --enable-libtheora --enable-libvorbis --enable-libvpx --enable-librtmp --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libass --enable-ffplay --enable-libspeex --enable-libschroedinger --enable-libfdk-aac --enable-libopus --enable-frei0r --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/1.5.2_1/include/openjpeg-1.5 --enable-nonfree --enable-vda
  
    libavutil      54. 31.100 / 54. 31.100
  
    libavcodec     56. 60.100 / 56. 60.100
  
    libavformat    56. 40.101 / 56. 40.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 40.101 /  5. 40.101
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  2.101 /  1.  2.101
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [avfoundation @ 0x7fca1200da00] Selected pixel format (yuv420p) is not supported by the input device.
  
  [avfoundation @ 0x7fca1200da00] Supported pixel formats:
  
  [avfoundation @ 0x7fca1200da00]   uyvy422
  
  [avfoundation @ 0x7fca1200da00]   yuyv422
  
  [avfoundation @ 0x7fca1200da00]   nv12
  
  [avfoundation @ 0x7fca1200da00]   0rgb
  
  [avfoundation @ 0x7fca1200da00]   bgr0
  
  [avfoundation @ 0x7fca1200da00] Overriding selected pixel format to use uyvy422 instead.
  
  [avfoundation @ 0x7fca1200da00] Stream #0: not enough frames to estimate rate; consider increasing probesize
  
  Input #0, avfoundation, from '1:0':
  
    Duration: N/A, start: 11734.092500, bitrate: 2822 kb/s
  
      Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 2880x1800, 1000k tbr, 1000k tbn, 1000k tbc
  
      Stream #0:1: Audio: pcm_f32le, 44100 Hz, stereo, flt, 2822 kb/s
  
  File 'out.mkv' already exists. Overwrite ? [y/N] y
  
  No pixel format specified, yuv422p for H.264 encoding chosen.
  
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  [libx264 @ 0x7fca1390e000] MB rate (20340000000) > level limit (2073600)
  
  [libx264 @ 0x7fca1390e000] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x7fca1390e000] profile High 4:2:2, level 5.2, 4:2:2 8-bit
  
  [libx264 @ 0x7fca1390e000] 264 - core 148 r2601 a0cd7d3 - 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=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, matroska, to 'out.mkv':
  
    Metadata:
  
      encoder         : Lavf56.40.101
  
      Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv422p, 2880x1800, q=-1--1, 1000k fps, 1k tbn, 1000k tbc
  
      Metadata:
  
        encoder         : Lavc56.60.100 libx264
  
      Stream #0:1: Audio: vorbis (libvorbis) (oV[0][0] / 0x566F), 44100 Hz, stereo, fltp
  
      Metadata:
  
        encoder         : Lavc56.60.100 libvorbis
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (pcm_f32le (native) -> vorbis (libvorbis))
  
  Press [q] to stop, [?] for help
  
  frame=  969 fps= 29 q=-1.0 Lsize=    6911kB time=00:00:34.80 bitrate=1626.8kbits/s    
  
  video:6475kB audio:396kB subtitle:0kB other streams:0kB global headers:4kB muxing overhead: 0.591309%
  
  [libx264 @ 0x7fca1390e000] frame I:4     Avg QP:15.77  size:1461092
  
  [libx264 @ 0x7fca1390e000] frame P:246   Avg QP:16.00  size:  2608
  
  [libx264 @ 0x7fca1390e000] frame B:719   Avg QP:13.91  size:   200
  
  [libx264 @ 0x7fca1390e000] consecutive B-frames:  0.9%  0.4%  0.0% 98.7%
  
  [libx264 @ 0x7fca1390e000] mb I  I16..4: 11.6% 43.3% 45.2%
  
  [libx264 @ 0x7fca1390e000] mb P  I16..4:  0.0%  0.0%  0.1%  P16..4:  0.4%  0.0%  0.0%  0.0%  0.0%    skip:99.5%
  
  [libx264 @ 0x7fca1390e000] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.2%  0.0%  0.0%  direct: 0.0%  skip:99.8%  L0:39.9% L1:60.0% BI: 0.1%
  
  [libx264 @ 0x7fca1390e000] 8x8 transform intra:41.6% inter:38.8%
  
  [libx264 @ 0x7fca1390e000] coded y,uvDC,uvAC intra: 76.9% 77.9% 75.5% inter: 0.0% 0.1% 0.0%
  
  [libx264 @ 0x7fca1390e000] i16 v,h,dc,p: 51% 34% 11%  4%
  
  [libx264 @ 0x7fca1390e000] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 17% 19%  7%  4%  3%  8%  5% 16%
  
  [libx264 @ 0x7fca1390e000] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 24% 10%  7%  6%  5%  8%  7% 12%
  
  [libx264 @ 0x7fca1390e000] i8c dc,h,v,p: 59% 14% 18%  9%
  
  [libx264 @ 0x7fca1390e000] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x7fca1390e000] ref P L0: 71.5%  3.4% 13.0% 12.1%
  
  [libx264 @ 0x7fca1390e000] ref B L0: 46.6% 52.3%  1.1%
  
  [libx264 @ 0x7fca1390e000] ref B L1: 95.1%  4.9%
  
  [libx264 @ 0x7fca1390e000] kb/s:1525.48

  and Screen 1 :

  User@User-MacBook-Pro:~/test$ ffmpeg -f avfoundation -i "2:0" out.mkv
  
  ffmpeg version 2.8.4 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with Apple LLVM version 7.0.2 (clang-700.1.81)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-libfreetype --enable-libtheora --enable-libvorbis --enable-libvpx --enable-librtmp --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libass --enable-ffplay --enable-libspeex --enable-libschroedinger --enable-libfdk-aac --enable-libopus --enable-frei0r --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/1.5.2_1/include/openjpeg-1.5 --enable-nonfree --enable-vda
  
    libavutil      54. 31.100 / 54. 31.100
  
    libavcodec     56. 60.100 / 56. 60.100
  
    libavformat    56. 40.101 / 56. 40.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 40.101 /  5. 40.101
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  2.101 /  1.  2.101
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [avfoundation @ 0x7fc2e900da00] Selected pixel format (yuv420p) is not supported by the input device.
  
  [avfoundation @ 0x7fc2e900da00] Supported pixel formats:
  
  [avfoundation @ 0x7fc2e900da00]   uyvy422
  
  [avfoundation @ 0x7fc2e900da00]   yuyv422
  
  [avfoundation @ 0x7fc2e900da00]   nv12
  
  [avfoundation @ 0x7fc2e900da00]   0rgb
  
  [avfoundation @ 0x7fc2e900da00]   bgr0
  
  [avfoundation @ 0x7fc2e900da00] Overriding selected pixel format to use uyvy422 instead.
  
  [avfoundation @ 0x7fc2e900da00] Stream #0: not enough frames to estimate rate; consider increasing probesize
  
  Input #0, avfoundation, from '2:0':
  
    Duration: N/A, start: 11809.126333, bitrate: 2822 kb/s
  
      Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 2560x1080, 1000k tbr, 1000k tbn, 1000k tbc
  
      Stream #0:1: Audio: pcm_f32le, 44100 Hz, stereo, flt, 2822 kb/s
  
  File 'out.mkv' already exists. Overwrite ? [y/N] y
  
  No pixel format specified, yuv422p for H.264 encoding chosen.
  
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  [libx264 @ 0x7fc2ea82ac00] MB rate (10880000000) > level limit (2073600)
  
  [libx264 @ 0x7fc2ea82ac00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x7fc2ea82ac00] profile High 4:2:2, level 5.2, 4:2:2 8-bit
  
  [libx264 @ 0x7fc2ea82ac00] 264 - core 148 r2601 a0cd7d3 - 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=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, matroska, to 'out.mkv':
  
    Metadata:
  
      encoder         : Lavf56.40.101
  
      Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv422p, 2560x1080, q=-1--1, 1000k fps, 1k tbn, 1000k tbc
  
      Metadata:
  
        encoder         : Lavc56.60.100 libx264
  
      Stream #0:1: Audio: vorbis (libvorbis) (oV[0][0] / 0x566F), 44100 Hz, stereo, fltp
  
      Metadata:
  
        encoder         : Lavc56.60.100 libvorbis
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (pcm_f32le (native) -> vorbis (libvorbis))
  
  Press [q] to stop, [?] for help
  
  frame=  755 fps= 30 q=-1.0 Lsize=    1025kB time=00:00:26.65 bitrate= 315.1kbits/s    
  
  video:680kB audio:326kB subtitle:0kB other streams:0kB global headers:4kB muxing overhead: 2.003084%
  
  [libx264 @ 0x7fc2ea82ac00] frame I:4     Avg QP:13.22  size:145661
  
  [libx264 @ 0x7fc2ea82ac00] frame P:191   Avg QP:19.87  size:   250
  
  [libx264 @ 0x7fc2ea82ac00] frame B:560   Avg QP:28.31  size:   116
  
  [libx264 @ 0x7fc2ea82ac00] consecutive B-frames:  1.1%  0.0%  0.4% 98.5%
  
  [libx264 @ 0x7fc2ea82ac00] mb I  I16..4: 54.5% 29.2% 16.2%
  
  [libx264 @ 0x7fc2ea82ac00] mb P  I16..4:  0.2%  0.1%  0.0%  P16..4:  0.1%  0.0%  0.0%  0.0%  0.0%    skip:99.6%
  
  [libx264 @ 0x7fc2ea82ac00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.3%  0.0%  0.0%  direct: 0.0%  skip:99.7%  L0:69.2% L1:30.8% BI: 0.0%
  
  [libx264 @ 0x7fc2ea82ac00] 8x8 transform intra:31.7% inter:13.1%
  
  [libx264 @ 0x7fc2ea82ac00] coded y,uvDC,uvAC intra: 10.9% 8.8% 8.5% inter: 0.0% 0.0% 0.0%
  
  [libx264 @ 0x7fc2ea82ac00] i16 v,h,dc,p: 69% 31%  0%  0%
  
  [libx264 @ 0x7fc2ea82ac00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27%  5% 67%  0%  0%  0%  0%  0%  0%
  
  [libx264 @ 0x7fc2ea82ac00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 38% 25% 14%  3%  3%  4%  5%  4%  5%
  
  [libx264 @ 0x7fc2ea82ac00] i8c dc,h,v,p: 92%  3%  4%  0%
  
  [libx264 @ 0x7fc2ea82ac00] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x7fc2ea82ac00] ref P L0: 76.3%  1.7% 16.8%  5.2%
  
  [libx264 @ 0x7fc2ea82ac00] ref B L0: 38.9% 56.9%  4.2%
  
  [libx264 @ 0x7fc2ea82ac00] ref B L1: 97.3%  2.7%
  
  [libx264 @ 0x7fc2ea82ac00] kb/s:208.84

  EDIT

  The main differences between the two (lengthy) outputs above via

  wdiff -n output1 output2 |colordiff

  is the resolution ([-2880x1800,-] {+2560x1080,+}) and the resulting MB rate ([-(20340000000)-] {+(10880000000)+}). So, what could increase the performance of ffmpeg ?

• FFMPEG crop video output is black screen, sound is good [on hold]

  11 janvier 2016, par Oum Alaa

  I cropped a video using ffmpeg command line, the output is black screen, the sound is clear and good :

  ffmpeg -i Original.mp4 -t 00:00:29 -vf "crop=634:300:0:60" Done.mp4

  ffmpeg version :

  ffmpeg version 0.8.17-4:0.8.17-0ubuntu0.12.04.1, Copyright (c) 2000-2014 the Libav developers

  built on Mar 16 2015 13:26:50 with gcc 4.6.3

  video information :

  mediainfo '--Inform=Video;%Width%x%Height%' Original.mp4
  
  634x360

  Thanks in advance