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• FFMPEG-jpg sequence to H.264 generate best result

  18 octobre 2015, par Ziki

  I have a jpg sequence which I need to convert to mp4, and I need to get the best result.

  As I understood, I need to supply the ’ffmpeg’ cmdln the following : bitrate, minrate, maxrate and bufsize.

  The only thing that I found about calculating the above params, is if I have the final output file size. But considering I want the best quality, I don’t know the final output file size, and I don’t care what it will be.

  Of course I have the framerate and the total frames.

  Here’s my ffmpeg cmdln :

  ffmpeg 
  
  -r 24 
  
  -start_number 0 
  
  -i "C:\pathToSequence\%06d.jpg" 
  
  -c copy 
  
  -vframes 792 
  
  -threads 16 
  
  -pix_fmt yuv420p 
  
  -c:v libx264 
  
  "C:\pathToOutput\result.mp4"

  The total size of the sequence is 128MB, 792 frames, 24 framerate, resolution 1280x720.

  Until now I used to add the following to the ffmpeg cmdln :

  -b:v 10000k -minrate 10000k -maxrate 10000k -bufsize 10000k

  And if it was 1080p :

  -b:v 20000k -minrate 20000k -maxrate 20000k -bufsize 20000k

  And I figured that if I put the max value that ffmpeg can handle (2147480) it will generate almost the same result as the above. But I think it’s a bad approach(correct me if I’m wrong).

  So if I need to get the best result, how do I calculate it(or I can simply put the max value) ?

  Also I would like if you have another helpful flags to add to make the best final result.

  —EDIT—

  Here’s the updated command :

  O:\tools\ffmpeg -framerate 24 -start_number 0 -i "C:\share\localProcess\test\%05d.jpg" -vframes 54 -pix_fmt yuv420p -c:v libx264 -preset veryslow -qp 1 "C:\share\localProcess\result\result.mp4"

  And this is the ouptout :

  ffmpeg version N-72383-g7206b94 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-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmfx --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --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 --enable-zlib
  
    libavutil      54. 26.100 / 54. 26.100
  
    libavcodec     56. 41.100 / 56. 41.100
  
    libavformat    56. 33.101 / 56. 33.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 16.101 /  5. 16.101
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, image2, from 'C:\share\localProcess\test\%05d.jpg':
  
    Duration: 00:00:02.25, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 72:72 DAR 16:9], 24 fps, 24 tbr, 24 tbn, 24 tbc
  
  [swscaler @ 0000000004d6bf60] deprecated pixel format used, make sure you did set range correctly
  
  [libx264 @ 0000000004d7a9e0] using SAR=1/1
  
  [libx264 @ 0000000004d7a9e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0000000004d7a9e0] profile High, level 5.0
  
  [libx264 @ 0000000004d7a9e0] 264 - core 146 r2538 121396c - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=16 deblock=1:0:0 analyse=0x3:0x133 me=umh subme=9 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=24 chroma_me=1 trellis=2 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=8 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=24 scenecut=40 intra_refresh=0 rc=cqp mbtree=0 qp=1 ip_ratio=1.40 pb_ratio=1.30 aq=0
  
  Output #0, mp4, to 'C:\share\localProcess\result\result.mp4':
  
    Metadata:
  
      encoder         : Lavf56.33.101
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 24 fps, 12288 tbn, 24 tbc
  
      Metadata:
  
        encoder         : Lavc56.41.100 libx264
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  frame=   54 fps= 38 q=-1.0 Lsize=     542kB time=00:00:02.16 bitrate=2050.0kbits/s
  
  video:541kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.251171%
  
  [libx264 @ 0000000004d7a9e0] frame I:1     Avg QP: 0.00  size: 23629
  
  [libx264 @ 0000000004d7a9e0] frame P:22    Avg QP: 1.00  size: 16146
  
  [libx264 @ 0000000004d7a9e0] frame B:31    Avg QP: 2.81  size:  5623
  
  [libx264 @ 0000000004d7a9e0] consecutive B-frames: 16.7% 29.6% 16.7%  0.0%  9.3%  0.0% 13.0% 14.8%  0.0%
  
  [libx264 @ 0000000004d7a9e0] mb I  I16..4: 74.9% 20.2%  4.9%
  
  [libx264 @ 0000000004d7a9e0] mb P  I16..4:  0.3%  0.1%  1.2%  P16..4:  2.7%  0.4%  0.8%  0.2%  0.1%    skip:94.2%
  
  [libx264 @ 0000000004d7a9e0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  3.0%  0.4%  0.5%  direct: 0.3%  skip:95.7%  L0:56.0% L1:40.5% BI: 3.5%
  
  [libx264 @ 0000000004d7a9e0] 8x8 transform intra:16.5% inter:18.4%
  
  [libx264 @ 0000000004d7a9e0] direct mvs  spatial:54.8% temporal:45.2%
  
  [libx264 @ 0000000004d7a9e0] coded y,uvDC,uvAC intra: 33.9% 49.8% 49.5% inter: 1.3% 2.9% 2.9%
  
  [libx264 @ 0000000004d7a9e0] i16 v,h,dc,p: 79% 13%  4%  4%
  
  [libx264 @ 0000000004d7a9e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 22% 48%  2%  4%  6%  3%  1%  2%
  
  [libx264 @ 0000000004d7a9e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 13% 43%  5%  6%  4%  5%  5%  6%
  
  [libx264 @ 0000000004d7a9e0] i8c dc,h,v,p: 78% 12%  7%  3%
  
  [libx264 @ 0000000004d7a9e0] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0000000004d7a9e0] ref P L0: 65.7%  2.4%  8.9%  4.5%  2.3%  3.0%  2.8%  3.9%  3.5%  0.8%  0.3%  0.5%  0.3%  0.5%  0.2%  0.3%
  
  [libx264 @ 0000000004d7a9e0] ref B L0: 76.9% 12.0%  3.4%  0.7%  3.6%  0.5%  2.1%  0.4%  0.1%  0.0%  0.1%  0.0%  0.1%  0.1%
  
  [libx264 @ 0000000004d7a9e0] ref B L1: 98.2%  1.8%
  
  [libx264 @ 0000000004d7a9e0] kb/s:1966.80

  Link to download JPG sequence.

  Link to download the result.

• FFmpeg stuck on frame 0 during time-lapse conversion with `-ss` start time

  2 janvier 2021, par rgov

  I have a long video that I'd like to speed up into a time-lapse. Following the FFmpeg wiki, I came up with this incantation :

  



  ffmpeg -i IMG_0238.MOV -r 60 -ss 00:04:41 -filter:v "setpts=PTS/60.0" -an output.mp4


  



  It should clip off the first few minutes, then create a new 60fps video file at 60x the speed.

  



  Although it spins all my CPU cores up to 100%, the status bar simply shows frame=    0 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x and never progresses.

  



  The problem seems related to the -ss 00:04:41 flag, which specifies the start time ; I want to drop the first 4 minutes 41 seconds of source video. When I omit this option, the video conversion succeeds.

  



  Full log follows.

  



  ---

  



  ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
  built with Apple LLVM version 9.1.0 (clang-902.0.30)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.4.1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libmp3lame --enable-libx264 --enable-libx265 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb59b800000] stream 2, missing mandatory atoms, broken header
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb59b800000] stream 3, missing mandatory atoms, broken header
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'IMG_0238.MOV':
  Metadata:
    major_brand     : qt  
    minor_version   : 0
    compatible_brands: qt  
    creation_time   : 2017-04-20T16:25:14.000000Z
    com.apple.quicktime.location.ISO6709: +36.4610+025.3727+123.613/
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 7
    com.apple.quicktime.software: 10.3.1
    com.apple.quicktime.creationdate: 2017-04-20T19:25:13+0300
  Duration: 01:22:45.53, start: -0.000023, bitrate: 44171 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 3840x2160, 44077 kb/s, 30 fps, 30 tbr, 600 tbn, 1200 tbc (default)
    Metadata:
      rotate          : 180
      creation_time   : 2017-04-20T16:25:14.000000Z
      handler_name    : Core Media Data Handler
      encoder         : H.264
    Side data:
      displaymatrix: rotation of -180.00 degrees
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 84 kb/s (default)
    Metadata:
      creation_time   : 2017-04-20T16:25:14.000000Z
      handler_name    : Core Media Data Handler
    Stream #0:2(und): Data: none (mebx / 0x7862656D) (default)
    Metadata:
      creation_time   : 2017-04-20T16:25:14.000000Z
      handler_name    : Core Media Data Handler
    Stream #0:3(und): Data: none (mebx / 0x7862656D) (default)
    Metadata:
      creation_time   : 2017-04-20T16:25:14.000000Z
      handler_name    : Core Media Data Handler
File 'output.mp4' already exists. Overwrite ? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x7fb59b82b800] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x7fb59b82b800] profile High, level 5.2
[libx264 @ 0x7fb59b82b800] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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=6 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=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     : qt  
    minor_version   : 0
    compatible_brands: qt  
    com.apple.quicktime.creationdate: 2017-04-20T19:25:13+0300
    com.apple.quicktime.location.ISO6709: +36.4610+025.3727+123.613/
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 7
    com.apple.quicktime.software: 10.3.1
    encoder         : Lavf57.83.100
    Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 3840x2160, q=-1--1, 60 fps, 15360 tbn, 60 tbc (default)
    Metadata:
      encoder         : Lavc57.107.100 libx264
      creation_time   : 2017-04-20T16:25:14.000000Z
      handler_name    : Core Media Data Handler
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
      displaymatrix: rotation of -0.00 degrees
frame=    0 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x


  


• ffmpeg xfade audio out of sync

  1er décembre 2020, par Richard

  hi I am using ffmpeg xfade to concat two clips, the transition looks fine, but the second clip has no audio in the output. I don't find more information about this in https://trac.ffmpeg.org/wiki/Xfade and the official doc. Can I keep the audio of both clips in sync ?

  


  I'm puttting the complete log below, it's massive

  


  ffmpeg -i teacher1.mp4 -i teacher2.mp4 -filter_complex xfade=transition=fadewhite:duration=1:offset=14.5 output.mp4
ffmpeg version 4.3.1-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 8 (Debian 8.3.0-6)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
  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
  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 'teacher1.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
  Duration: 00:00:15.02, start: 0.000000, bitrate: 2447 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 2315 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'teacher2.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
  Duration: 00:00:15.02, start: 0.000000, bitrate: 1643 kb/s
    Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 1509 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
Stream mapping:
  Stream #0:0 (h264) -> xfade:main (graph 0)
  Stream #1:0 (h264) -> xfade:xfade (graph 0)
  xfade (graph 0) -> Stream #0:0 (libx264)
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x64603c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x64603c0] profile High 4:4:4 Predictive, level 4.0, 4:4:4, 8-bit
[libx264 @ 0x64603c0] 264 - core 161 r3018 db0d417 - 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=4 threads=6 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=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: Video: h264 (libx264) (avc1 / 0x31637661), yuv444p, 1920x1080, q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
    Metadata:
      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    : SoundHandler
      encoder         : Lavc58.91.100 aac
frame=  738 fps= 25 q=-1.0 Lsize=    7317kB time=00:00:29.40 bitrate=2038.9kbits/s speed=1.01x    
video:7064kB audio:236kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.241368%
[libx264 @ 0x64603c0] frame I:8     Avg QP:16.56  size:100307
[libx264 @ 0x64603c0] frame P:332   Avg QP:19.50  size: 15211
[libx264 @ 0x64603c0] frame B:398   Avg QP:24.35  size:  3467
[libx264 @ 0x64603c0] consecutive B-frames:  6.2% 62.6%  8.9% 22.2%
[libx264 @ 0x64603c0] mb I  I16..4: 18.7% 60.5% 20.9%
[libx264 @ 0x64603c0] mb P  I16..4:  4.5%  7.6%  0.6%  P16..4: 24.1%  5.6%  1.9%  0.0%  0.0%    skip:55.7%
[libx264 @ 0x64603c0] mb B  I16..4:  0.4%  0.5%  0.1%  B16..8: 14.3%  0.9%  0.1%  direct: 0.4%  skip:83.3%  L0:42.9% L1:53.9% BI: 3.3%
[libx264 @ 0x64603c0] 8x8 transform intra:59.2% inter:84.3%
[libx264 @ 0x64603c0] coded y,u,v intra: 25.3% 11.9% 13.0% inter: 3.2% 1.7% 1.8%
[libx264 @ 0x64603c0] i16 v,h,dc,p: 49% 25% 15% 12%
[libx264 @ 0x64603c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 17% 37%  2%  2%  3%  2%  3%  2%
[libx264 @ 0x64603c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 19% 15%  6%  7%  7%  6%  6%  5%
[libx264 @ 0x64603c0] Weighted P-Frames: Y:3.3% UV:1.5%
[libx264 @ 0x64603c0] ref P L0: 66.0%  8.0% 18.5%  7.5%  0.0%
[libx264 @ 0x64603c0] ref B L0: 84.9% 13.1%  2.0%
[libx264 @ 0x64603c0] ref B L1: 98.8%  1.2%
[libx264 @ 0x64603c0] kb/s:1960.04
[aac @ 0x64d1280] Qavg: 171.394