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  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

Sur d’autres sites (4616)

  • FFMpeg is dropping video track when clipping an mpg video

    16 juin 2017, par M. Grishaber

    I am extracting a clip from an mpg video using the following command.
    ffmpeg.exe -i 271b.mpg -ss 00:00:05.000 -t 00:00:03.200 -c copy out_271b.mpg

    I am using the copy parameter to avoid reencoding the clip.
    The resulting mpg file only has the audio track, no video.
    The following is the FFMpeg screen dump.

    C:\ffmpeg-20170615\bin>ffmpeg.exe -i 271b.mpg -ss 00:00:05.000 -t 00:00:03.200 -c copy out_271b.mpg
       ffmpeg version N-86482-gbc40674 Copyright (c) 2000-2017 the FFmpeg developers
         built with gcc 7.1.0 (GCC)
         configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
         libavutil      55. 66.100 / 55. 66.100
         libavcodec     57. 99.100 / 57. 99.100
         libavformat    57. 73.100 / 57. 73.100
         libavdevice    57.  7.100 / 57.  7.100
         libavfilter     6. 92.100 /  6. 92.100
         libswscale      4.  7.101 /  4.  7.101
         libswresample   2.  8.100 /  2.  8.100
         libpostproc    54.  6.100 / 54.  6.100
       Input #0, mpeg, from '271b.mpg':
         Duration: 00:01:11.44, start: 0.460000, bitrate: 2154 kb/s
           Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg, progressive), 640x480 [SAR 1:1 DAR 4:3], 2000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
           Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, mono, s16p, 128 kb/s
       [mpeg @ 0000000000666aa0] VBV buffer size not set, using default size of 130KB
       If you want the mpeg file to be compliant to some specification
       Like DVD, VCD or others, make sure you set the correct buffer size
       Output #0, mpeg, to 'out_271b.mpg':
         Metadata:
           encoder         : Lavf57.73.100
           Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, bt470bg, progressive), 640x480 [SAR 1:1 DAR 4:3], q=2-31, 2000 kb/s, 25 fps, 25 tbr, 90k tbn, 25 tbc
           Stream #0:1: Audio: mp2, 44100 Hz, mono, s16p, 128 kb/s
       Stream mapping:
         Stream #0:0 -> #0:0 (copy)
         Stream #0:1 -> #0:1 (copy)
       Press [q] to stop, [?] for help
       frame=   74 fps=0.0 q=-1.0 Lsize=     786kB time=00:00:03.17 bitrate=2027.2kbits/s speed= 198x
       video:730kB audio:50kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.843343%

    Thanks

    Addition : I tried to open the generated clip file with ffplay and got the following results. Note that ffplay was able to open and play the original mpg file.

    ffplay.exe out_271b.mpg
    ffplay version N-86482-gbc40674 Copyright (c) 2003-2017 the FFmpeg developers
     built with gcc 7.1.0 (GCC)
     configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
     libavutil      55. 66.100 / 55. 66.100
     libavcodec     57. 99.100 / 57. 99.100
     libavformat    57. 73.100 / 57. 73.100
     libavdevice    57.  7.100 / 57.  7.100
     libavfilter     6. 92.100 /  6. 92.100
     libswscale      4.  7.101 /  4.  7.101
     libswresample   2.  8.100 /  2.  8.100
     libpostproc    54.  6.100 / 54.  6.100
    [mpeg @ 00000000023cde80] probed stream 2 failedB sq=    0B f=0/0
    [mpeg @ 00000000023cde80] start time for stream 0 is not set in estimate_timings_from_pts
    [mpeg @ 00000000023cde80] Could not find codec parameters for stream 2 (Video: none, none): unknown codec
    Consider increasing the value for the 'analyzeduration' and 'probesize' options
    Input #0, mpeg, from 'out_271bb.mpg':
     Duration: 00:00:03.22, start: 0.500000, bitrate: 2068 kb/s
       Stream #0:0[0x1bf]: Data: dvd_nav_packet  0KB sq=    0B f=0/0
       Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, mono, s16p, 128 kb/s
       Stream #0:2[0x1e0]: Video: none, none, 25 fps, 25 tbr, 90k tbn
    SDL_OpenAudio (1 channels, 44100 Hz): DirectSoundCreate: No audio device found
    No more combinations to try, audio open failed
    No codec could be found with id 0
    Failed to open file 'out_271b.mpg' or configure filtergraph
  • Video Created By FFMPEG is Blank [on hold]

    11 octobre 2015, par Larry Holze

    New to FFMPEG and trying to use it very simplistically. I have a sequence of images that I want to make into a video. Using this command :

    ffmpeg -framerate 30 -i "fr_%05d.jpg" out.mp4

    Creates the out.mp4 file OK, but when I play it back it is just blank.
    Pictures in the .jpg sequence are definitely not blank.

    Am I missing some option(s) ?

    Command window output :

    ffmpeg version N-74700-g628a73f Copyright (c) 2000-2015 the FFmpeg developers

    Built with gcc 4.9.3 (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-libbs2b --enable-libcaca --

    enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l

    ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab

    le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en

    able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena

    ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc

    --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl

    e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --ena

    ble-decklink --enable-zlib

     libavutil      54. 31.100 / 54. 31.100

     libavcodec     56. 59.100 / 56. 59.100

     libavformat    56. 40.101 / 56. 40.101

     libavdevice    56.  4.100 / 56.  4.100

     libavfilter     5. 39.100 /  5. 39.100

     libswscale      3.  1.101 /  3.  1.101

     libswresample   1.  2.101 /  1.  2.101

     libpostproc    53.  3.100 / 53.  3.100

    Input #0, image2, from 'fr_%05d.jpg':

     Duration: 00:00:30.03, start: 0.000000, bitrate: N/A

       Stream #0:0: Video: mjpeg, gray(bt470bg/unknown/unknown), 300x200 [SAR 90:90

    DAR 3:2], 30 fps, 30 tbr, 30 tbn, 30 tbc

    [swscaler @ 0000000002f88c60] deprecated pixel format used, make sure you did se

    t range correctly

    No pixel format specified, yuvj444p for H.264 encoding chosen.

    Use -pix_fmt yuv420p for compatibility with outdated media players.

    [libx264 @ 000000000589b0c0] using SAR=1/1

    [libx264 @ 000000000589b0c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2

    AVX

    [libx264 @ 000000000589b0c0] profile High 4:4:4 Predictive, level 1.3, 4:4:4 8-b

    it

    [libx264 @ 000000000589b0c0] 264 - core 148 r2597 e86f3a1 - H.264/MPEG-4 AVC cod

    ec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 r

    ef=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_pski

    p=1 chroma_qp_offset=4 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decim

    ate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_a

    dapt=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 'out.mp4':

     Metadata:

       encoder         : Lavf56.40.101

       Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuvj444p(pc), 3

    00x200 [SAR 1:1 DAR 3:2], q=-1--1, 30 fps, 15360 tbn, 30 tbc

       Metadata:

         encoder         : Lavc56.59.100 libx264

    Stream mapping:

     Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))

    Press [q] to stop, [?] for help

    Input stream #0:0 frame changed from size:300x200 fmt:gray to size:300x200 fmt:y

    uvj444p

    Input stream #0:0 frame changed from size:300x200 fmt:yuvj444p to size:300x200 f

    mt:gray

    [swscaler @ 00000000095b75c0] deprecated pixel format used, make sure you did se

    t range correctly

    Input stream #0:0 frame changed from size:300x200 fmt:gray to size:300x200 fmt:y

    uvj444p

    Input stream #0:0 frame changed from size:300x200 fmt:yuvj444p to size:300x200 f

    mt:gray

    [swscaler @ 00000000095b75c0] deprecated pixel format used, make sure you did se

    t range correctly

    Input stream #0:0 frame changed from size:300x200 fmt:gray to size:300x200 fmt:y

    uvj444p

    frame=  244 fps=0.0 q=29.0 size=      15kB time=00:00:06.40 bitrate=  19.6kbits/

    Input stream #0:0 frame changed from size:300x200 fmt:yuvj444p to size:300x200 f

    mt:gray

    [swscaler @ 00000000095b75c0] deprecated pixel format used, make sure you did se

    t range correctly

    Input stream #0:0 frame changed from size:300x200 fmt:gray to size:300x200 fmt:y

    uvj444p

    frame=  325 fps=316 q=29.0 size=      23kB time=00:00:09.10 bitrate=  20.4kbits/

    frame=  382 fps=247 q=29.0 size=      34kB time=00:00:11.00 bitrate=  25.1kbits/

    frame=  417 fps=203 q=29.0 size=      36kB time=00:00:12.16 bitrate=  24.5kbits/

    frame=  482 fps=187 q=29.0 size=      38kB time=00:00:14.33 bitrate=  21.7kbits/

    frame=  541 fps=175 q=29.0 size=      39kB time=00:00:16.30 bitrate=  19.8kbits/

    frame=  611 fps=170 q=29.0 size=      41kB time=00:00:18.63 bitrate=  18.1kbits/

    frame=  881 fps=214 q=29.0 size=      54kB time=00:00:27.63 bitrate=  15.9kbits/

    frame=  901 fps=214 q=-1.0 Lsize=      66kB time=00:00:29.96 bitrate=  18.1kbits

    /s

    video:55kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing ov

    erhead: 20.648893%

    [libx264 @ 000000000589b0c0] frame I:8     Avg QP:18.01  size:  2331

    [libx264 @ 000000000589b0c0] frame P:239   Avg QP:22.95  size:    91

    [libx264 @ 000000000589b0c0] frame B:654   Avg QP:33.33  size:    23

    [libx264 @ 000000000589b0c0] consecutive B-frames:  2.9%  0.7%  1.0% 95.4%

    [libx264 @ 000000000589b0c0] mb I  I16..4: 36.6% 53.8%  9.6%

    [libx264 @ 000000000589b0c0] mb P  I16..4:  0.1%  0.4%  0.2%  P16..4:  0.6%  0.0

    %  0.0%  0.0%  0.0%    skip:98.6%

    [libx264 @ 000000000589b0c0] mb B  I16..4:  0.0%  0.9%  0.0%  B16..8:  1.7%  0.0

    %  0.0%  direct: 0.0%  skip:97.4%  L0:55.9% L1:44.1% BI: 0.0%

    [libx264 @ 000000000589b0c0] 8x8 transform intra:70.8% inter:12.0%

    [libx264 @ 000000000589b0c0] coded y,u,v intra: 5.9% 4.9% 5.0% inter: 0.0% 0.0%

    0.0%

    [libx264 @ 000000000589b0c0] i16 v,h,dc,p: 54% 46%  0%  0%

    [libx264 @ 000000000589b0c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13%  5% 83%  0%  0%

    0%  0%  0%  0%

    [libx264 @ 000000000589b0c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 47% 15% 10%  4%  6%

    5%  4%  4%  4%

    [libx264 @ 000000000589b0c0] Weighted P-Frames: Y:0.0% UV:0.0%

    [libx264 @ 000000000589b0c0] ref P L0: 47.6%  2.6% 44.9%  5.0%

    [libx264 @ 000000000589b0c0] ref B L0: 55.9% 40.1%  4.0%

    [libx264 @ 000000000589b0c0] ref B L1: 93.3%  6.7%

    [libx264 @
  • How to optimize ffmpeg command

    25 juin 2020, par Mikołaj Henklewski

    I have such command :

    


     ffmpeg -i /media/4f908e5e971140d09eb19590c3a571ab.mp4 
-loop 1 -i /assets/531d9a4daf6a4ee2ae0746d5b15498e0.png -t 2.0 
-filter_complex "[1:v]format=rgba,colorchannelmixer=aa=1.0[alpha];[alpha]scale=iw*2:ih*2[alpha_big];[alpha_big]rotate=0.0:c=none:ow=rotw(0.0):oh=roth(0.0)[alpha_big_rot];[alpha_big_rot]format=rgba,fade=t=out:d=1.0:alpha=true:st=0.54[alpha_big_rot_fade];
[alpha_big_rot_fade]scale=iw/4:ih/4[alpha_rot_fade];
[0:v][alpha_rot_fade] overlay=x=0.0:y=0.0:enable='between(t,0.0,1.54)'" -preset ultrafast -crf 0 /media/b47470cd610941949f6e01b06fe5b2e6.mp4


    


    here you have log for above command :

    


    ffmpeg version 3.2.14-1~deb9u1 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
  configuration: --prefix=/usr --extra-version='1~deb9u1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  libavutil      55. 34.101 / 55. 34.101
  libavcodec     57. 64.101 / 57. 64.101
  libavformat    57. 56.101 / 57. 56.101
  libavdevice    57.  1.100 / 57.  1.100
  libavfilter     6. 65.100 /  6. 65.100
  libavresample   3.  1.  0 /  3.  1.  0
  libswscale      4.  2.100 /  4.  2.100
  libswresample   2.  3.100 /  2.  3.100
  libpostproc    54.  1.100 / 54.  1.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/media/4f908e5e971140d09eb19590c3a571ab.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf57.56.101
  Duration: 00:00:02.00, start: 0.000000, bitrate: 1495 kb/s
    Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv420p, 720x720 [SAR 1:1 DAR 1:1], 1491 kb/s, 23.98 fps, 23.98 tbr, 19184 tbn, 47.96 tbc (default)
    Metadata:
      handler_name    : VideoHandler
Input #1, png_pipe, from '/assets/531d9a4daf6a4ee2ae0746d5b15498e0.png':
  Duration: N/A, bitrate: N/A
    Stream #1:0: Video: png, rgba(pc), 1627x1440, 25 fps, 25 tbr, 25 tbn, 25 tbc
[libx264 @ 0x558c06195660] using SAR=1/1
[libx264 @ 0x558c06195660] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x558c06195660] profile High 4:4:4 Predictive, level 3.1, 4:2:0 8-bit
[libx264 @ 0x558c06195660] 264 - core 148 r2748 97eaef2 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=0 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=0 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=23 scenecut=0 intra_refresh=0 rc=cqp mbtree=0 qp=0
Output #0, mp4, to '/media/b47470cd610941949f6e01b06fe5b2e6.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf57.56.101
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x720 [SAR 1:1 DAR 1:1], q=-1--1, 23.98 fps, 19184 tbn, 23.98 tbc (default)
    Metadata:
      encoder         : Lavc57.64.101 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
  Stream #0:0 (h264) -> overlay:main
  Stream #1:0 (png) -> format
  overlay -> Stream #0:0 (libx264)
Press [q] to stop, [?] for help
frame=    8 fps=7.2 q=0.0 size=     274kB time=00:00:00.00 bitrate=43232461.5kbits/s speed=4.66e-05x Past duration 0.998741 too large   5605kB time=00:00:01.66 bitrate=27523.4kbits/s speed=0.265x
frame=   48 fps=7.5 q=-1.0 Lsize=    5606kB time=00:00:01.96 bitrate=23428.8kbits/s speed=0.306x
video:5605kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.018714%
[libx264 @ 0x558c06195660] frame I:1     Avg QP: 0.00  size:280440
[libx264 @ 0x558c06195660] frame P:47    Avg QP: 0.00  size:116129
[libx264 @ 0x558c06195660] mb I  I16..4: 100.0%  0.0%  0.0%
[libx264 @ 0x558c06195660] mb P  I16..4: 11.9%  0.0%  0.0%  P16..4: 38.6%  0.0%  0.0%  0.0%  0.0%    skip:49.5%
[libx264 @ 0x558c06195660] coded y,uvDC,uvAC intra: 100.0% 95.9% 95.9% inter: 42.8% 26.3% 26.2%
[libx264 @ 0x558c06195660] i16 v,h,dc,p:  4% 96%  0%  0%
[libx264 @ 0x558c06195660] i8c dc,h,v,p:  5% 85% 11%  0%
[libx264 @ 0x558c06195660] kb/s:22934.92


    


    Is there any way to execute it faster ? Or maybe I have to use gpu to proceed it faster ? Any ideas ? I execute it very often and any shortening time would be great.

    


    I read about hardware acceleration, but I am not sure if it will help. It is possible also to upgrade version of ffpmeg, but will it help ?