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  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
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    10 avril 2011

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    Actuellement MediaSPIP n’est disponible qu’en français et (...)

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    21 juin 2013, par

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    Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
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    Administration > Configuration des masques de formulaire.
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  • Why duration of the mp4 file created with ffmpeg from png files is smaller than expected ?

    17 août 2021, par qwark97

    I'm trying to concatenate a bunch of png files into one mp4 file using ffmpeg. I use following command :

    


    ffmpeg -f concat -i concat.txt -f mp4 out.mp4


    


    The "description file" (concat.txt) looks like this :

    


    file screen_001.png
duration 0.14538311958312988
file screen_002.png
duration 0.11382007598876953
file screen_003.png
duration 2.543360710144043
...
file screen_036.png
duration 0.15303301811218262
file screen_037.png
duration 0.160630464553833
file screen_038.png
duration 3.2751874923706055


    


    Given command works, I'm able to create desired mp4 file. The problem is, the duration of the output file is smaller than sum of the duration lines from concat.txt. I expect mp4 file 22.48s long but I get 19.20s long file.

    


    What am I doing wrong ? Maybe I'm not using some flag I should ? Is it even possible to do what I want ? I'm kind a newbie with ffmpeg and video manipulation at all so any help would be appreciated.

    


    Output of the ffmpeg, maybe will be useful :

    


    root@65181939e08e:/files/tmp# ffmpeg -f concat -i concat.txt -f mp4 out.mp4
ffmpeg version 4.1.6-1~deb10u1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 8 (Debian 8.3.0-6)
  configuration: --prefix=/usr --extra-version='1~deb10u1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 22.100 / 56. 22.100
  libavcodec     58. 35.100 / 58. 35.100
  libavformat    58. 20.100 / 58. 20.100
  libavdevice    58.  5.100 / 58.  5.100
  libavfilter     7. 40.101 /  7. 40.101
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  3.100 /  5.  3.100
  libswresample   3.  3.100 /  3.  3.100
  libpostproc    55.  3.100 / 55.  3.100
Input #0, concat, from 'concat.txt':
  Duration: 00:00:22.48, start: 0.000000, bitrate: 0 kb/s
    Stream #0:0: Video: png, rgba(pc), 1366x768, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x5651f1a6e8c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x5651f1a6e8c0] profile High 4:4:4 Predictive, level 3.2, 4:4:4 8-bit
[libx264 @ 0x5651f1a6e8c0] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - 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=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 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, mp4, to 'out.mp4':
  Metadata:
    encoder         : Lavf58.20.100
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv444p, 1366x768, q=-1--1, 25 fps, 12800 tbn, 25 tbc
    Metadata:
      encoder         : Lavc58.35.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame=  483 fps=199 q=-1.0 Lsize=     258kB time=00:00:19.20 bitrate= 110.2kbits/s dup=445 drop=0 speed=7.89x    
video:252kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.564829%
[libx264 @ 0x5651f1a6e8c0] frame I:5     Avg QP: 7.86  size: 28761
[libx264 @ 0x5651f1a6e8c0] frame P:121   Avg QP:14.58  size:   729
[libx264 @ 0x5651f1a6e8c0] frame B:357   Avg QP:13.34  size:    70
[libx264 @ 0x5651f1a6e8c0] consecutive B-frames:  1.2%  0.0%  1.9% 96.9%
[libx264 @ 0x5651f1a6e8c0] mb I  I16..4: 88.2%  0.0% 11.8%
[libx264 @ 0x5651f1a6e8c0] mb P  I16..4:  1.3%  0.0%  0.3%  P16..4:  0.2%  0.0%  0.0%  0.0%  0.0%    skip:98.1%
[libx264 @ 0x5651f1a6e8c0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.9%  0.0%  0.0%  direct: 0.0%  skip:99.1%  L0:59.4% L1:40.6% BI: 0.0%
[libx264 @ 0x5651f1a6e8c0] coded y,u,v intra: 7.9% 0.7% 1.3% inter: 0.0% 0.0% 0.0%
[libx264 @ 0x5651f1a6e8c0] i16 v,h,dc,p: 81% 18%  1%  0%
[libx264 @ 0x5651f1a6e8c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 28% 22%  2%  3%  3%  3%  3%  3%
[libx264 @ 0x5651f1a6e8c0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x5651f1a6e8c0] ref P L0: 72.5% 11.9% 12.4%  3.1%
[libx264 @ 0x5651f1a6e8c0] ref B L0: 50.4% 48.1%  1.4%
[libx264 @ 0x5651f1a6e8c0] ref B L1: 98.9%  1.1%
[libx264 @ 0x5651f1a6e8c0] kb/s:106.45


    


    Thanks for your help !

    


  • ffmpeg Error while opening enconder for output stream [duplicate]

    4 décembre 2015, par user650922

    This question already has an answer here :

    As a testing purpose I am converting .mp4 video to .mp4.

    The error message is "Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height".

    Could someone please help me in finding the reason behind below error.

    Below is my terminal log.

    C:\Users\work\Downloads\ffmpeg-20151130-git-7b11eea-win64-static\ffmpeg-20151130
    
-git-7b11eea-win64-static\bin
    
>ffmpeg -i C:\Users\work\Desktop\Esocializ\Sample.mp4 C:\Users\work\Desktop\Esoc
    
ializ\Sample1.mp4
    
ffmpeg version N-76957-g7b11eea Copyright (c) 2000-2015 the FFmpeg developers
    
  built with gcc 5.2.0 (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-libzimg --
    
enable-lzma --enable-decklink --enable-zlib
    
  libavutil      55.  9.100 / 55.  9.100
    
  libavcodec     57. 16.101 / 57. 16.101
    
  libavformat    57. 19.100 / 57. 19.100
    
  libavdevice    57.  0.100 / 57.  0.100
    
  libavfilter     6. 17.100 /  6. 17.100
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\work\Desktop\Esocializ\Sample.
    
mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    creation_time   : 1970-01-01 00:00:00
    
    encoder         : Lavf53.24.2
    
  Duration: 00:00:05.31, start: 0.000000, bitrate: 1589 kb/s
    
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720
    
[SAR 1:1 DAR 16:9], 1205 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    
    Metadata:
    
      creation_time   : 1970-01-01 00:00:00
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp,
    
384 kb/s (default)
    
    Metadata:
    
      creation_time   : 1970-01-01 00:00:00
    
      handler_name    : SoundHandler
    
[libx264 @ 000000c07583dde0] using SAR=1/1
    
[libx264 @ 000000c07583dde0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
    
[libx264 @ 000000c07583dde0] profile High, level 3.1
    
[libx264 @ 000000c07583dde0] 264 - core 148 r2638 7599210 - 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=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 dec
    
imate=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
    
[libvo_aacenc @ 000000c0758d6da0] Unable to set encoding parameters
    
Output #0, mp4, to 'C:\Users\work\Desktop\Esocializ\Sample1.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf53.24.2
    
    Stream #0:0(und): Video: h264 (libx264), yuv420p, 1280x720 [SAR 1:1 DAR 16:9
    
], q=-1--1, 25 fps, 25 tbn, 25 tbc (default)
    
    Metadata:
    
      creation_time   : 1970-01-01 00:00:00
    
      handler_name    : VideoHandler
    
      encoder         : Lavc57.16.101 libx264
    
    Stream #0:1(und): Audio: aac, 0 channels, 128 kb/s (default)
    
    Metadata:
    
      creation_time   : 1970-01-01 00:00:00
    
      handler_name    : SoundHandler
    
      encoder         : Lavc57.16.101 libvo_aacenc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (aac (native) -> aac (libvo_aacenc))
    
Error while opening encoder for output stream #0:1 - maybe incorrect parameters
    
such as bit_rate, rate, width or height
    

    
C:\Users\work\Downloads\ffmpeg-20151130-git-7b11eea-win64-static\ffmpeg-20151130
    
-git-7b11eea-win64-static\bin
    
>

  • FFMPEG convert .mpg video to .mp4 without lose quality

    12 novembre 2015, par reterius

    How can i convert video .mpg to .mp4 wihtout love quality. My codes below :

     $INCPATH       = dirname(__FILE__).'/';
    

    
 $id = 99999;
    
 $ext = "MPG" ;
    

    
  $input_dir = $INCPATH."../img/videos/".$id.".".$ext ;   
    
  $output_dir2 = $INCPATH."../img/videos/".$id.".mp4" ;
    

    
    $q = '/usr/bin/ffmpeg -i '.$input_dir.' -c:v libx264 -c:a libfaac -r     30 '.$output_dir2." 2>&1" ;
    

    
    $out = shell_exec($q) ;
    
    $input_dir  = $output_dir2 ;
    

    
     echo var_dump($out);

    Response that :

                string(5735) "ffmpeg version N-76539-g480bad7-syslint Copyright (c) 2000-2015 the FFmpeg developers
    
              built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16)
    
              configuration: --prefix=/usr/local/cpffmpeg --enable-shared --enable-nonfree --enable-gpl --enable-pthreads --enable-libopencore-amrnb --enable-decoder=liba52 --enable-libopencore-amrwb --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --extra-cflags=-I/usr/local/cpffmpeg/include/ --extra-ldflags=-L/usr/local/cpffmpeg/lib --enable-version3 --extra-version=syslint
    
              libavutil      55.  5.100 / 55.  5.100
    
              libavcodec     57. 15.100 / 57. 15.100
    
              libavformat    57. 14.100 / 57. 14.100
    
              libavdevice    57.  0.100 / 57.  0.100
    
              libavfilter     6. 15.100 /  6. 15.100
    
              libswscale      4.  0.100 /  4.  0.100
    
              libswresample   2.  0.101 /  2.  0.101
    
              libpostproc    54.  0.100 / 54.  0.100
    
            Input #0, mpeg, from '/home/imcajans/public_html/kzmk/../img/videos/99999.MPG':
    
              Duration: 00:00:08.16, start: 0.116600, bitrate: 2955 kb/s
    
                Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], max. 9100 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    
                Stream #0:1[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 256 kb/s
    
            [libx264 @ 0x161e820] using SAR=64/45
    
            [libx264 @ 0x161e820] using cpu capabilities: none!
    
            [libx264 @ 0x161e820] profile High, level 3.1
    
            [libx264 @ 0x161e820] 264 - core 148 r2638 7599210 - 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=18 lookahead_threads=3 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 '/home/imcajans/public_html/kzmk/../img/videos/99999.mp4':
    
              Metadata:
    
                encoder         : Lavf57.14.100
    
                Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x576 [SAR 64:45 DAR 16:9], q=-1--1, 30 fps, 15360 tbn, 30 tbc
    
                Metadata:
    
                  encoder         : Lavc57.15.100 libx264
    
                Stream #0:1: Audio: aac (libfaac) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, s16, 128 kb/s
    
                Metadata:
    
                  encoder         : Lavc57.15.100 libfaac
    
            Stream mapping:
    
              Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))
    
              Stream #0:1 -> #0:1 (ac3 (native) -> aac (libfaac))
    
            Press [q] to stop, [?] for help
    
            frame=   48 fps=0.0 q=0.0 size=       0kB time=00:00:01.19 bitrate=   0.3kbits/s dup=8 drop=0    
    
            frame=   66 fps= 58 q=29.0 size=      20kB time=00:00:01.83 bitrate=  87.2kbits/s dup=11 drop=0    
    
            frame=   77 fps= 43 q=29.0 size=      51kB time=00:00:02.17 bitrate= 190.3kbits/s dup=13 drop=0    
    
            frame=   89 fps= 38 q=29.0 size=      86kB time=00:00:02.60 bitrate= 272.2kbits/s dup=15 drop=0    
    
            frame=  101 fps= 34 q=29.0 size=     124kB time=00:00:02.98 bitrate= 340.6kbits/s dup=17 drop=0    
    
            frame=  114 fps= 32 q=29.0 size=     166kB time=00:00:03.39 bitrate= 400.3kbits/s dup=19 drop=0    
    
            frame=  126 fps= 31 q=29.0 size=     201kB time=00:00:03.84 bitrate= 428.3kbits/s dup=21 drop=0    
    
            frame=  137 fps= 30 q=29.0 size=     236kB time=00:00:04.20 bitrate= 459.6kbits/s dup=23 drop=0    
    
            frame=  151 fps= 29 q=29.0 size=     275kB time=00:00:04.65 bitrate= 484.2kbits/s dup=25 drop=0    
    
            frame=  165 fps= 29 q=29.0 size=     316kB time=00:00:05.12 bitrate= 505.4kbits/s dup=27 drop=0    
    
            frame=  177 fps= 28 q=29.0 size=     350kB time=00:00:05.50 bitrate= 521.3kbits/s dup=29 drop=0    
    
            frame=  188 fps= 27 q=29.0 size=     387kB time=00:00:05.93 bitrate= 534.6kbits/s dup=31 drop=0    
    
            frame=  198 fps= 27 q=29.0 size=     419kB time=00:00:06.25 bitrate= 548.7kbits/s dup=33 drop=0    
    
            frame=  212 fps= 27 q=29.0 size=     461kB time=00:00:06.72 bitrate= 562.4kbits/s dup=35 drop=0    
    
            frame=  223 fps= 26 q=29.0 size=     495kB time=00:00:07.04 bitrate= 576.6kbits/s dup=37 drop=0    
    
            frame=  240 fps= 26 q=29.0 size=     574kB time=00:00:07.59 bitrate= 618.9kbits/s dup=40 drop=0    
    
            frame=  245 fps= 20 q=-1.0 Lsize=     834kB time=00:00:08.17 bitrate= 835.9kbits/s dup=41 drop=0    
    
            video:696kB audio:128kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.134396%
    
            [libx264 @ 0x161e820] frame I:2     Avg QP:22.05  size: 10777
    
            [libx264 @ 0x161e820] frame P:187   Avg QP:22.67  size:  3323
    
            [libx264 @ 0x161e820] frame B:56    Avg QP:23.98  size:  1242
    
            [libx264 @ 0x161e820] consecutive B-frames: 54.7% 44.1%  1.2%  0.0%
    
            [libx264 @ 0x161e820] mb I  I16..4: 33.5% 63.9%  2.5%
    
            [libx264 @ 0x161e820] mb P  I16..4:  1.9%  1.8%  0.0%  P16..4: 46.9%  4.7%  6.4%  0.0%  0.0%    skip:38.3%
    
            [libx264 @ 0x161e820] mb B  I16..4:  0.1%  0.1%  0.0%  B16..8: 34.4%  0.5%  0.0%  direct: 3.1%  skip:61.8%  L0:41.1% L1:57.8% BI: 1.1%
    
            [libx264 @ 0x161e820] 8x8 transform intra:51.1% inter:96.1%
    
            [libx264 @ 0x161e820] coded y,uvDC,uvAC intra: 25.1% 86.2% 30.4% inter: 9.5% 38.5% 1.1%
    
            [libx264 @ 0x161e820] i16 v,h,dc,p: 41%  5% 11% 43%
    
            [libx264 @ 0x161e820] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 36%  6% 48%  1%  1%  3%  1%  3%  1%
    
            [libx264 @ 0x161e820] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 54% 10% 15%  3%  3%  8%  2%  5%  2%
    
            [libx264 @ 0x161e820] i8c dc,h,v,p: 66% 12% 18%  3%
    
            [libx264 @ 0x161e820] Weighted P-Frames: Y:0.0% UV:0.0%
    
            [libx264 @ 0x161e820] ref P L0: 66.7%  5.8% 17.5% 10.0%
    
            [libx264 @ 0x161e820] ref B L0: 81.1% 18.9%  0.0%
    
            [libx264 @ 0x161e820] ref B L1: 99.5%  0.5%
    
            [libx264 @ 0x161e820] kb/s:697.87
    
            "

    And my video which has .mpg extention its best quality : https://imcajans.com/img/videos/99999.mpg

    And my video which coverted from .mpg to .mp4 its bad quality : https://imcajans.com/img/videos/99999.mp4

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