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• Revision 679e4abdd5 : Initial version of alpha channel support This is a mostly-working implementatio

  16 mai 2013, par John Koleszar

  Changed Paths :
   Modify /configure

  
   Modify /vp9/common/vp9_alloccommon.c

  
   Modify /vp9/common/vp9_blockd.h

  
   Modify /vp9/common/vp9_extend.c

  
   Modify /vp9/common/vp9_mbpitch.c

  
   Modify /vp9/common/vp9_onyxc_int.h

  
   Modify /vp9/common/vp9_postproc.c

  
   Modify /vp9/common/vp9_reconinter.c

  
   Modify /vp9/common/vp9_reconinter.h

  
   Modify /vp9/encoder/vp9_encodeframe.c

  
   Modify /vp9/encoder/vp9_encodemb.c

  
   Modify /vp9/encoder/vp9_lookahead.c

  
   Modify /vp9/encoder/vp9_onyx_if.c

  
   Modify /vp9/encoder/vp9_onyx_int.h

  
   Modify /vp9/encoder/vp9_quantize.c

  
   Modify /vp9/encoder/vp9_rdopt.c

  
   Modify /vp9/encoder/vp9_temporal_filter.c

  
   Modify /vp9/vp9_iface_common.h

  
   Modify /vpx_scale/generic/yv12config.c

  
  
  Initial version of alpha channel support

  This is a mostly-working implementation of an extra channel in the
  bitstream. Configure with —enable-alpha to test. Notable TODOs :

  - Add extra channel to all mismatch tests, PSNR, SSIM, etc
  - Configurable subsampling
  - Variable number of planes (currently always uses all 4)
  - Loop filtering
  - Per-plane lossless quantizer
  - ARNR support

  This implementation just uses the same contents as the Y channel
  for the A channel, due to lack of content and general pain in
  playing back 4 channel content. A later patch will use the actual
  alpha channel passed in from outside the codec.

  Change-Id : Ibf81f023b1c570bd84b3064e9b4b8ae52e087592

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

  21 mars 2015, par Suprabhat

  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

• Installed codec not working ffmpeg

  25 février 2015, par Chris James Champeau

  I have ffmpeg installed on my server, I can trancode mp4 and it works great.

  However, I have installed the Theora codec as it explains here, http://cumulusclips.org/docs/install-ffmpeg-x264-on-centos/#Theora_Codec

  When I run this code

  FFREPORT=file=ffreport.log:level=32 /usr/local/bin/ffmpeg -nostdin -report -i testinput.mp4 -y -b 250k -deinterlace -vcodec libtheora -acodec libvorbis testoutput.ogg

  I get the following error Unknown encoder 'libtheora'

  Is there something I missed, any help would be appreciated