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• Prevent ffmpeg from changing the intensity of colors while downscaling the resolution of the video

  29 août 2022, par dravit

  I have a use case where I need to downscale a 716x1280 mp4 video to 358x640 (half of the original). Command that I used is

  


  ffmpeg -i ./input.mp4 -vf "scale=640:640:force_original_aspect_ratio=decrease,pad=ceil(iw/2)*2:ceil(ih/2)*2" ./output.mp4


  


  Out of 10 sample videos, 2 of the them suffered impact on colors. Below I have attached a comparison from the one which was impacted the most.

  


  

  


  NOTE : The one on the right is a frame from the original video and the frame on the left is the one from the processed (down scaled) video. Notice the colors red and green in the image (even the skin color and hair color were changed).

  


  What I am looking for is

  


  

  • Is there any way I can prevent changes like these happening ? Probably some flag on saturation, brightness, contrast or any other parameter.

  


  • I am assuming that ffmpeg uses some default settings while downscaling a video. What made ffmpeg change colors only for these two videos ? If it made similar changes for the rest of the videos as well, how to predict this behaviour before hand ?

  


  


  EDIT :

  


  What I already have Tried ?

  


  

  • -crf with values 0 and 18.

  


  • -preset veryslow as mentioned here

  


  


  None helped

  


  Mediainfo input V/S output

  


  





  


  


  


  


  


  



  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  param	input	output
  color range	Limited	NA (attribute not in description)
  color primaries	BT.2020	NA (attribute not in description)
  transfer characteristics	HLG	NA (attribute not in description)
  matrix coefficients	BT.2020 non-constant	NA (attribute not in description)
  bit deapth	8	8

  


  


  Logs of the ffmpeg command

  


  ffmpeg -i ./input.mp4 -vf "scale=640:640:force_original_aspect_ratio=decrease,pad=ceil(iw/2)*2:ceil(ih/2)*2" -movflags +faststart ./output.mp4
ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with Apple clang version 12.0.0 (clang-1200.0.32.28)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.1_9 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './input.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.45.100
  Duration: 00:00:30.05, start: 0.000000, bitrate: 10366 kb/s
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt2020nc/bt2020/arib-std-b67), 716x1280, 10116 kb/s, 30 fps, 30 tbr, 19200 tbn, 38400 tbc (default)
    Metadata:
      handler_name    : Core Media Video
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 245 kb/s (default)
    Metadata:
      handler_name    : Core Media Audio
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x7faab4808800] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x7faab4808800] profile High, level 3.0, 4:2:0, 8-bit
[libx264 @ 0x7faab4808800] 264 - core 161 r3027 4121277 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - 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, mp4, to './output.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.45.100
    Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 358x640, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
    Metadata:
      handler_name    : Core Media Video
      encoder         : Lavc58.91.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      handler_name    : Core Media Audio
      encoder         : Lavc58.91.100 aac
[mp4 @ 0x7faab5808800] Starting second pass: moving the moov atom to the beginning of the file
frame=  901 fps=210 q=-1.0 Lsize=    3438kB time=00:00:30.02 bitrate= 938.0kbits/s speed=7.01x
video:2933kB audio:472kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.974633%
[libx264 @ 0x7faab4808800] frame I:6     Avg QP:22.60  size: 20769
[libx264 @ 0x7faab4808800] frame P:228   Avg QP:24.84  size:  7657
[libx264 @ 0x7faab4808800] frame B:667   Avg QP:27.59  size:  1697
[libx264 @ 0x7faab4808800] consecutive B-frames:  0.9%  0.9%  1.0% 97.2%
[libx264 @ 0x7faab4808800] mb I  I16..4:  9.5% 64.6% 26.0%
[libx264 @ 0x7faab4808800] mb P  I16..4:  2.5% 12.2%  2.5%  P16..4: 37.2% 20.6% 11.2%  0.0%  0.0%    skip:13.7%
[libx264 @ 0x7faab4808800] mb B  I16..4:  0.4%  2.1%  0.2%  B16..8: 42.2%  7.1%  1.2%  direct: 1.8%  skip:44.9%  L0:39.4% L1:52.8% BI: 7.8%
[libx264 @ 0x7faab4808800] 8x8 transform intra:72.2% inter:74.2%
[libx264 @ 0x7faab4808800] coded y,uvDC,uvAC intra: 61.8% 67.2% 20.2% inter: 16.7% 13.9% 1.3%
[libx264 @ 0x7faab4808800] i16 v,h,dc,p: 24% 19%  7% 50%
[libx264 @ 0x7faab4808800] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 16% 15%  6%  9% 11%  7% 10%  6%
[libx264 @ 0x7faab4808800] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 16% 13%  7%  9% 10%  7%  9%  4%
[libx264 @ 0x7faab4808800] i8c dc,h,v,p: 53% 16% 26%  5%
[libx264 @ 0x7faab4808800] Weighted P-Frames: Y:3.9% UV:1.8%
[libx264 @ 0x7faab4808800] ref P L0: 57.8% 19.5% 14.8%  7.8%  0.1%
[libx264 @ 0x7faab4808800] ref B L0: 90.7%  7.2%  2.1%
[libx264 @ 0x7faab4808800] ref B L1: 95.3%  4.7%
[libx264 @ 0x7faab4808800] kb/s:799.80
[aac @ 0x7faab2036a00] Qavg: 189.523


  


• FFMPEG - Converting any kind of file to Mp4 compatible with IOS and Flash

  14 février 2021, par jax

  I am struggling with FFmpeg within Drupal Video Module to produce files to MP4 that is compatible with IOS and Flash Player10 and up.
I have used the following commands so far, please note that the variables starting with " !" are placeholders and will be replaces with the proper items :

  


  FFmpeg -strict experimental -y -i !videofile -pass 1 -s !widthx!height -b:v 500k -threads 0 -vcodec libx264 -vf "pad=!paddingwidth:!paddingheight:!paddingleft:!paddingtop:000000" -preset slow -an !convertfile

FFmpeg -strict experimental -y -i !videofile -pass 2 -s !widthx!height -b:v 500k -threads 0 -vcodec libx264 -vf "pad=!paddingwidth:!paddingheight:!paddingleft:!paddingtop:000000" -preset slow -acodec aac -ab 128k !convertfile


  


  The above command produce an error as :

  


  error executing command for rendering preset HTML5 MP4, command #1 :

  


  nice -n 19 /usr/bin/ffmpeg/ffmpeg -y -i '80137db8c3_1334836277_int_tr_19.mp4' -s 176x100 -b:v 500k -threads 0 -vcodec libx264 -preset slow -acodec aac -ab 128k '/converted/80137db8c3_1334836277_int_tr_19.mp4' 2>&1

Output:

ffmpeg version git-2013-02-01-5a67e30 Copyright (c) 2000-2013 the FFmpeg developers
  built on Feb  1 2013 14:23:14 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  configuration: --enable-gpl --enable-libass --enable-libfaac --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-version3
  libavutil      52. 17.100 / 52. 17.100
  libavcodec     54. 91.100 / 54. 91.100
  libavformat    54. 61.104 / 54. 61.104
  libavdevice    54.  3.103 / 54.  3.103
  libavfilter     3. 35.100 /  3. 35.100
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  2.100 / 52.  2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '80137db8c3_1334836277_int_tr_19.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2011-03-28 00:12:26
  Duration: 00:02:01.14, start: 0.000000, bitrate: 703 kb/s
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 601 kb/s, 29.96 fps, 29.92 tbr, 1k tbn, 59.83 tbc
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 96 kb/s
    Metadata:
      creation_time   : 2011-03-28 00:12:27
      handler_name    : (C) 2007 Google Inc. v08.13.2007.
[libx264 @ 0x34ec060] using SAR=100/99
[libx264 @ 0x34ec060] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
[libx264 @ 0x34ec060] profile High, level 2.0
[libx264 @ 0x34ec060] 264 - core 129 r2245 bc13772 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=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=12 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=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=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=abr mbtree=1 bitrate=500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
The encoder 'aac' is experimental but experimental codecs are not enabled, add '-strict -2' if you want to use it.
Alternatively use the non experimental encoder 'libfaac'.


  


  Another command that I used is :

  


  FFmpeg -i !videofile -an -pass 1 -vcodec libx264 -preset slow -b 500k -threads auto !convertfile

FFMpeg -y -i !videofile -acodec libfaac -ab 128k -pass 2 -vcodec libx264 -preset slow -b 500k -threads auto !convertfile


  


  Output for the first pass :

  


  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'comiccon.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: mp41
    creation_time   : 2012-08-15 17:12:37
  Duration: 01:17:15.93, start: 0.000000, bitrate: 706 kb/s
    Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 636 kb/s, 30 fps, 30 tbr, 90k tbn, 60 tbc
    Metadata:
      creation_time   : 2012-08-15 17:12:37
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 63 kb/s
    Metadata:
      creation_time   : 2012-08-15 17:12:37
      handler_name    : SoundHandler
Please use -b:a or -b:v, -b is ambiguous

using SAR=1/1
[libx264 @ 0x1c39be0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
[libx264 @ 0x1c39be0] profile Main, level 3.0
[libx264 @ 0x1c39be0] 264 - core 129 r2245 bc13772 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x1:0 me=dia subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 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=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=abr mbtree=1 bitrate=500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'comiccon.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: mp41
    encoder         : Lavf54.61.104
    Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 640x360 [SAR 1:1 DAR 16:9], q=-1--1, pass 1, 500 kb/s, 15360 tbn, 30 tbc
    Metadata:
      creation_time   : 2012-08-15 17:12:37
      handler_name    : VideoHandler
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> libx264)
Press [q] to stop, [?] for help
frame=139078 fps=279 q=32766.0 Lsize=  286145kB time=01:17:15.86 bitrate= 505.6kbits/s    
video:284758kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.487000%
[libx264 @ 0x1c39be0] frame I:656   Avg QP:19.51  size: 21457
[libx264 @ 0x1c39be0] frame P:76006 Avg QP:22.19  size:  3141
[libx264 @ 0x1c39be0] frame B:62416 Avg QP:26.38  size:   621
[libx264 @ 0x1c39be0] consecutive B-frames: 32.3% 17.5% 18.6% 31.6%
[libx264 @ 0x1c39be0] mb I  I16..4: 24.5%  0.0% 75.5%
[libx264 @ 0x1c39be0] mb P  I16..4:  7.5%  0.0%  0.0%  P16..4: 40.5%  0.0%  0.0%  0.0%  0.0%    skip:52.1%
[libx264 @ 0x1c39be0] mb B  I16..4:  1.4%  0.0%  0.0%  B16..8: 12.0%  0.0%  0.0%  direct: 2.9%  skip:83.7%  L0:41.1% L1:41.6% BI:17.3%
[libx264 @ 0x1c39be0] final ratefactor: 23.45
[libx264 @ 0x1c39be0] direct mvs  spatial:95.3% temporal:4.7%
[libx264 @ 0x1c39be0] coded y,uvDC,uvAC intra: 37.6% 42.8% 11.8% inter: 8.9% 8.2% 0.5%
[libx264 @ 0x1c39be0] i16 v,h,dc,p: 43% 28% 19% 10%
[libx264 @ 0x1c39be0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 36% 21% 11%  6%  4%  5%  4%  6%  6%
[libx264 @ 0x1c39be0] i8c dc,h,v,p: 57% 19% 20%  4%
[libx264 @ 0x1c39be0] Weighted P-Frames: Y:1.4% UV:0.5%
[libx264 @ 0x1c39be0] kb/s:503.18


  


  output for the second pass :

  


  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'comiccon.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: mp41
    creation_time   : 2012-08-15 17:12:37
  Duration: 01:17:15.93, start: 0.000000, bitrate: 706 kb/s
    Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 636 kb/s, 30 fps, 30 tbr, 90k tbn, 60 tbc
    Metadata:
      creation_time   : 2012-08-15 17:12:37
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 63 kb/s
    Metadata:
      creation_time   : 2012-08-15 17:12:37
      handler_name    : SoundHandler
Please use -b:a or -b:v, -b is ambiguous
[libx264 @ 0x3247f80] using SAR=1/1
[libx264 @ 0x3247f80] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
[libx264 @ 0x3247f80] profile High, level 3.0
[libx264 @ 0x3247f80] 264 - core 129 r2245 bc13772 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=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=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=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=2pass mbtree=1 bitrate=500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 cplxblur=20.0 qblur=0.5 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'comiccon.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: mp41
    encoder         : Lavf54.61.104
    Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 640x360 [SAR 1:1 DAR 16:9], q=-1--1, pass 2, 500 kb/s, 15360 tbn, 30 tbc
    Metadata:
      creation_time   : 2012-08-15 17:12:37
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s
    Metadata:
      creation_time   : 2012-08-15 17:12:37
      handler_name    : SoundHandler
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> libx264)
  Stream #0:1 -> #0:1 (aac -> libfaac)
Press [q] to stop, [?] for help
frame=139078 fps=206 q=32766.0 Lsize=  357252kB time=01:17:15.93 bitrate= 631.3kbits/s    
video:282992kB audio:69592kB subtitle:0 global headers:0kB muxing overhead 1.324238%
[libx264 @ 0x3247f80] frame I:656   Avg QP:19.61  size: 20433
[libx264 @ 0x3247f80] frame P:76006 Avg QP:23.07  size:  2996
[libx264 @ 0x3247f80] frame B:62416 Avg QP:26.23  size:   780
[libx264 @ 0x3247f80] consecutive B-frames: 32.3% 17.5% 18.6% 31.6%
[libx264 @ 0x3247f80] mb I  I16..4: 17.2% 37.8% 44.9%
[libx264 @ 0x3247f80] mb P  I16..4:  2.9%  3.7%  1.2%  P16..4: 30.3%  6.1%  3.4%  0.0%  0.0%    skip:52.5%
[libx264 @ 0x3247f80] mb B  I16..4:  0.5%  0.6%  0.3%  B16..8: 25.9%  2.2%  0.5%  direct: 0.9%  skip:69.3%  L0:51.4% L1:43.0% BI: 5.7%
[libx264 @ 0x3247f80] 8x8 transform intra:45.9% inter:51.5%
[libx264 @ 0x3247f80] direct mvs  spatial:85.5% temporal:14.5%
[libx264 @ 0x3247f80] coded y,uvDC,uvAC intra: 47.3% 49.2% 13.5% inter: 9.0% 9.4% 0.5%
[libx264 @ 0x3247f80] i16 v,h,dc,p: 38% 27% 13% 22%
[libx264 @ 0x3247f80] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 16% 14%  5%  5%  7%  7%  8%  9%
[libx264 @ 0x3247f80] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 15%  9%  6%  7%  8%  7%  8%  8%
[libx264 @ 0x3247f80] i8c dc,h,v,p: 49% 22% 20%  8%
[libx264 @ 0x3247f80] Weighted P-Frames: Y:1.4% UV:0.5%
[libx264 @ 0x3247f80] ref P L0: 79.3% 10.4%  6.8%  1.6%  1.2%  0.7%  0.0%
[libx264 @ 0x3247f80] ref B L0: 93.6%  4.8%  1.2%  0.3%
[libx264 @ 0x3247f80] ref B L1: 96.6%  3.4%
[libx264 @ 0x3247f80] kb/s:500.06


  


  The above command produces the file correctly however it cannot be played in flash player. One thing that I noticed is this may happen if the input file is mp4 as well. This command is executed for users uploading files, so the input file could be any format.

  


  Below is the information about my FFmpeg version :
> ffmpeg version git-2013-02-01-5a67e30 Copyright (c) 2000-2013 the
> FFmpeg developers built on Feb 1 2013 14:23:14 with gcc 4.6
> (Ubuntu/Linaro 4.6.3-1ubuntu5) configuration : —enable-gpl
> —enable-libass —enable-libfaac —enable-libfdk-aac —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-librtmp —enable-libtheora —enable-libvorbis —enable-libvpx —enable-libx264 —enable-nonfree —enable-version3 libavutil 52. 17.100 / 52. 17.100
  
libavcodec 54. 91.100 / 54. 91.100
  
libavformat 54. 61.104 / 54. 61.104
  
libavdevice 54. 3.103 / 54. 3.103
  
libavfilter 3. 35.100 / 3. 35.100
  
libswscale 2. 2.100 / 2. 2.100
  
libswresample 0. 17.102 / 0. 17.102
  
libpostproc 52. 2.100 / 52. 2.1

  


• Convert MP4 Version - FFmpeg

  11 février 2024, par Luzwitz

  I have two mp4 Files :

  


  

  1. out.mp4: ISO Media, MP4 Base Media v1 [IS0 14496-12:2003]

  


  2. video/rio2016/finale/brasse/200.mp4: ISO Media, MP4 v2 [ISO 14496-14]

  


  


  How can I convert 1 to 2 (mp4 v1 to mp4 v2) ?