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  • Video Conversion to have Play Speed

    24 juin 2014, par Taufiq

    There is a open source Media Player Component called Media Kit (https://wpfmediakit.codeplex.com/). It supports Play Speed. But its dependent on video format.

    I have generated a video using SharpAvi (http://sharpavi.codeplex.com/) sample project, using Motion Jepg Encoder.

    This video does not have Play Speed support for some reason. Details Below from ffmpeg

    Video: mjpeg (MJPG / 0x47504A4D), yuvj420p(pc), 1920x1080 [SAR 96:96 DAR 16:9], 9818 kb/s, 10 fps, 10 tbr, 10 tbn, 10 tbc

    Next I download an flv video from Youtube and Media Kit’s play speed works fine with this video.

    Video: flv1, yuv420p, 426x240, 259 kb/s, 23.98 fps, 23.98 tbr, 1k tbn, 1k tbc

    Now I converted them into common MP4 format using ffmepg

    ffmpeg -i "1.avi" -ar 22050 -b 2048k "1.mp4"
    
ffmpeg -i "2.flv" -ar 22050 -b 2048k "2.mp4"

    Results

    1.mp4

     Video: h264 (High) (avc1 / 0x31637661), yuv420p, 426x240, 1235 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)

    2.mp4

    Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 1920 x1080 [SAR 1:1 DAR 16:9], 158 kb/s, 10 fps, 10 tbr, 10240 tbn, 20 tbc (default)

    The thing is the converted video from flv file still supports play speed where else the converted mp4 from the Avi does not. What is that I am missing

    More Details Below.

    AVI File

    ffmpeg -i "1.avi" ffmpeg version N-64167-gca35037 Copyright (c) 2000-2014 the FFmpeg developers   built on Jun 22 2014 22:02:17 with gcc 4.8.3 (GCC)   configuration:
    
--enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable- libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libope njpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsox r --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-decklink --enable-zlib   libavutil      52. 90.100 / 52. 90.100   libavcodec     55. 68.100 /
    
55. 68.100   libavformat    55. 44.100 / 55. 44.100   libavdevice    55. 13.101 / 55. 13.101   libavfilter     4.  9.100 /  4.  9.100   libswscale      2.  6.100 /  2.  6.100   libswresample   0. 19.100 / 
    
0. 19.100   libpostproc    52.  3.100 / 52.  3.100 [avi @ 028fe560] non-interleaved AVI Input #0, avi, from '1.avi':   Duration: 00:00:37.50, start: 0.000000, bitrate: 9794 kb/s
    
    Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj420p(pc), 1920x1080 [SAR 96:96 DAR 16:9], 9818 kb/s, 10 fps, 10 tbr, 10 tbn, 10 tbc
    
    Metadata:
    
      title           : Screencast At least one output file must be specified

    fLV File

    ffmpeg -i "2.flv" ffmpeg version N-64167-gca35037 Copyright (c) 2000-2014 the FFmpeg developers   built on Jun 22 2014 22:02:17 with gcc 4.8.3 (GCC)   configuration:
    
--enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable- libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libope njpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsox r --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-decklink --enable-zlib   libavutil      52. 90.100 / 52. 90.100   libavcodec     55. 68.100 /
    
55. 68.100   libavformat    55. 44.100 / 55. 44.100   libavdevice    55. 13.101 / 55. 13.101   libavfilter     4.  9.100 /  4.  9.100   libswscale      2.  6.100 /  2.  6.100   libswresample   0. 19.100 / 
    
0. 19.100   libpostproc    52.  3.100 / 52.  3.100 [flv @ 02b8e560] Stream discovered after head already parsed Input #0, flv, from '2.flv':   Metadata:
    
    starttime       : 0
    
    totalduration   : 85
    
    totaldatarate   : 325
    
    bytelength      : 3438869
    
    canseekontime   : true
    
    sourcedata      : B4A7DA902MM1403531086617082
    
    purl            :
    
    pmsg            :   Duration: 00:01:24.63, start: 0.000000, bitrate: 325 kb/s
    
    Stream #0:0: Video: flv1, yuv420p, 426x240, 259 kb/s, 23.98 fps, 23.98 tbr, 1k tbn, 1k tbc
    
    Stream #0:1: Audio: mp3, 22050 Hz, stereo, s16p, 65 kb/s
    
    Stream #0:2: Data: none At least one output file must be specified

    AVI to MP4

    ffmpeg -i "1.mp4" ffmpeg version N-64167-gca35037 Copyright (c) 2000-2014 the FFmpeg developers   built on Jun 22 2014 22:02:17 with gcc 4.8.3 (GCC)   configuration:
    
--enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable- libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libope njpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsox r --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-decklink --enable-zlib   libavutil      52. 90.100 / 52. 90.100   libavcodec     55. 68.100 /
    
55. 68.100   libavformat    55. 44.100 / 55. 44.100   libavdevice    55. 13.101 / 55. 13.101   libavfilter     4.  9.100 /  4.  9.100   libswscale      2.  6.100 /  2.  6.100   libswresample   0. 19.100 / 
    
0. 19.100   libpostproc    52.  3.100 / 52.  3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mp4':   Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf55.44.100   Duration: 00:00:37.50, start: 0.000000, bitrate: 159 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 1920 x1080 [SAR 1:1 DAR 16:9], 158 kb/s, 10 fps, 10 tbr, 10240 tbn, 20 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler At least one output file must be specified

    FLV to MP4

    ffmpeg -i "2.mp4" ffmpeg version N-64167-gca35037 Copyright (c) 2000-2014 the FFmpeg developers   built on Jun 22 2014 22:02:17 with gcc 4.8.3 (GCC)   configuration:
    
--enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable- libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libope njpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsox r --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-decklink --enable-zlib   libavutil      52. 90.100 / 52. 90.100   libavcodec     55. 68.100 /
    
55. 68.100   libavformat    55. 44.100 / 55. 44.100   libavdevice    55. 13.101 / 55. 13.101   libavfilter     4.  9.100 /  4.  9.100   libswscale      2.  6.100 /  2.  6.100   libswresample   0. 19.100 / 
    
0. 19.100   libpostproc    52.  3.100 / 52.  3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2.mp4':   Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf55.44.100   Duration: 00:01:24.81, start: 0.072562, bitrate: 1365 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 426x240, 1235 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 22050 Hz, stereo, fltp, 12 8 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler At least one output file must be specified

  • Revision bccc785f63 : Merge "Reuse inter prediction result in real-time speed 6"

    25 juin 2014, par Yunqing Wang

    Changed Paths :
     Modify /vp9/encoder/vp9_encodeframe.c


     Modify /vp9/encoder/vp9_pickmode.c


     Modify /vp9/encoder/vp9_speed_features.c


     Modify /vp9/encoder/vp9_speed_features.h



    Merge "Reuse inter prediction result in real-time speed 6"

  • Revision a9a13ce944 : Merge "Add realtime coverage to cpu speed test"

    27 juin 2014, par Alex Converse

    Merge "Add realtime coverage to cpu speed test"

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