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• Converting mkv to mp4 with ffmpeg sometimes loses video

  9 décembre 2019, par RobertW

  How can I create a universal as possible command line to convert mkv to mp4 ?

  I fixed an issue where sometimes I’d lose audio (I think) and now I’m losing video.
  This is the command I currently use (I’ve used a few, including -analyzeduration 1G -probesize 50M but I always end up with broken videos at some point) :

  if [[ $(pgrep -i ffmpeg) ]] ; then
  
    echo "FFMPEG IS ALREADY RUNNING!"
  
  else 
  
    echo "Starting mkv to mp4 conversion...";
  
      for i in /var/www/html/uploads/Videos/*/*/*/*.mkv;
  
        do name=$(echo "${i//.mkv/}");
  
        echo "$name";
  
        ffmpeg -n -i "$i" -c copy -c:a aac -movflags +faststart "${name}.mp4"; rm -v -f "${name}.mkv";
  
      done
  
  fi

  Output of running that on the specific videos I’m losing picture on :

  Starting mkv to mp4 conversion...
  
  /var/www/html/uploads/Videos/TV/Avatar The Last Airbender/Season 1/Avatar The Last Airbender - S01E02 - The Avatar Returns WEBDL-1080p
  
  ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 9 (GCC)
  
    configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection' --extra-ldflags='-Wl,-z,relro -Wl,--as-needed -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld ' --extra-cflags=' ' --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 --enable-bzlib --disable-crystalhd --enable-fontconfig --enable-frei0r --enable-gcrypt --enable-gnutls --enable-ladspa --enable-libaom --enable-libdav1d --enable-libass --enable-libbluray --enable-libcdio --enable-libdrm --enable-libjack --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-nvenc --enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librsvg --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzvbi --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-libmfx --enable-runtime-cpudetect
  
    libavutil      56. 31.100 / 56. 31.100
  
    libavcodec     58. 54.100 / 58. 54.100
  
    libavformat    58. 29.100 / 58. 29.100
  
    libavdevice    58.  8.100 / 58.  8.100
  
    libavfilter     7. 57.100 /  7. 57.100
  
    libavresample   4.  0.  0 /  4.  0.  0
  
    libswscale      5.  5.100 /  5.  5.100
  
    libswresample   3.  5.100 /  3.  5.100
  
    libpostproc    55.  5.100 / 55.  5.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/html/uploads/Videos/TV/Avatar The Last Airbender/Season 1/Avatar The Last Airbender - S01E02 - The Avatar Returns WEBDL-1080p.mkv':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2mp41
  
      encoder         : Lavf58.29.100
  
    Duration: 00:23:59.11, start: 0.000000, bitrate: 1258 kb/s
  
      Stream #0:0(und): Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv), 1440x1080, 1124 kb/s, SAR 1:1 DAR 4:3, 23.98 fps, 23.98 tbr, 16k tbn, 23.98 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (aac (native) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  Output #0, mp4, to '/var/www/html/uploads/Videos/TV/Avatar The Last Airbender/Season 1/Avatar The Last Airbender - S01E02 - The Avatar Returns WEBDL-1080p.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2mp41
  
      encoder         : Lavf58.29.100
  
      Stream #0:0(und): Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv), 1440x1080 [SAR 1:1 DAR 4:3], q=2-31, 1124 kb/s, 23.98 fps, 23.98 tbr, 16k tbn, 16k tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
        encoder         : Lavc58.54.100 aac
  
  [mp4 @ 0x5583e9bdb8c0] Starting second pass: moving the moov atom to the beginning of the file
  
  frame=34504 fps=1260 q=-1.0 Lsize=  221105kB time=00:23:59.08 bitrate=1258.6kbits/s speed=52.5x
  
  video:197477kB audio:22515kB subtitle:0kB other streams:0kB global headers:2kB muxing overhead: 0.506059%
  
  [aac @ 0x5583e9b3f140] Qavg: 562.538

  Edit :

  The below command worked on similar files which the above command did not :

    ffmpeg -n -i "$i" -c:v libx264 -c:a aac -movflags +faststart 

  Output :

  Starting mkv to mp4 conversion...
  
  /var/www/html/uploads/Videos/TV/Avatar The Last Airbender/Season 1/Avatar The Last Airbender - S01E03 - The Southern Air Temple WEBDL-1080p
  
  ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 9 (GCC)
  
    configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection' --extra-ldflags='-Wl,-z,relro -Wl,--as-needed -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld ' --extra-cflags=' ' --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 --enable-bzlib --disable-crystalhd --enable-fontconfig --enable-frei0r --enable-gcrypt --enable-gnutls --enable-ladspa --enable-libaom --enable-libdav1d --enable-libass --enable-libbluray --enable-libcdio --enable-libdrm --enable-libjack --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-nvenc --enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librsvg --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzvbi --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-libmfx --enable-runtime-cpudetect
  
    libavutil      56. 31.100 / 56. 31.100
  
    libavcodec     58. 54.100 / 58. 54.100
  
    libavformat    58. 29.100 / 58. 29.100
  
    libavdevice    58.  8.100 / 58.  8.100
  
    libavfilter     7. 57.100 /  7. 57.100
  
    libavresample   4.  0.  0 /  4.  0.  0
  
    libswscale      5.  5.100 /  5.  5.100
  
    libswresample   3.  5.100 /  3.  5.100
  
    libpostproc    55.  5.100 / 55.  5.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/html/uploads/Videos/TV/Avatar The Last Airbender/Season 1/Avatar The Last Airbender - S01E03 - The Southern Air Temple WEBDL-1080p.mkv':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2mp41
  
      encoder         : Lavf58.29.100
  
    Duration: 00:24:10.74, start: 0.000000, bitrate: 1354 kb/s
  
      Stream #0:0(und): Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv), 1440x1080, 1124 kb/s, SAR 1:1 DAR 4:3, 23.98 fps, 23.98 tbr, 16k tbn, 23.98 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(eng): Audio: eac3 (ec-3 / 0x332D6365), 48000 Hz, stereo, fltp, 224 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
      Side data:
  
        audio service type: main
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (hevc (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (eac3 (native) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x563ef7ad5a40] using SAR=1/1
  
  [libx264 @ 0x563ef7ad5a40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  [libx264 @ 0x563ef7ad5a40] profile High 10, level 4.0, 4:2:0, 10-bit
  
  [libx264 @ 0x563ef7ad5a40] 264 - core 157 r2980 34c06d1 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - 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=34 lookahead_threads=5 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=23 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=81 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to '/var/www/html/uploads/Videos/TV/Avatar The Last Airbender/Season 1/Avatar The Last Airbender - S01E03 - The Southern Air Temple WEBDL-1080p.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2mp41
  
      encoder         : Lavf58.29.100
  
      Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p10le, 1440x1080 [SAR 1:1 DAR 4:3], q=-1--1, 23.98 fps, 24k tbn, 23.98 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
        encoder         : Lavc58.54.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
        encoder         : Lavc58.54.100 aac
  
      Side data:
  
        audio service type: main
  
  frame=   37 fps=0.0 q=0.0 size=       0kB time=00:00:02.09 bitrate=   0.2kbits/sframe=   72 fps= 72 q=0.0 size=       0kB time=00:00:03.54 bitrate=   0.1kbits/sframe=  103 fps= 68 q=40.0 size=       0kB time=00:00:04.84 bitrate=   0.1kbits/frame=  128 fps= 64 q=40.0 size=       0kB time=00:00:05.90 bitrate=   0.1kbits/frame=  169 fps= 66 q=40.0 size=     256kB time=00:00:07.59 bitrate= 276.2kbits/frame=  194 fps= 63 q=40.0 size=     512kB time=00:00:08.66 bitrate= 484.3kbits/frame=  241 fps= 68 q=40.0 size=     512kB time=00:00:10.60 bitrate= 395.6kbits/frame=  262 fps= 64 q=40.0 size=     512kB time=00:00:11.47 bitrate= 365.5kbits/frame=  284 fps= 62 q=40.0 size=     768kB time=00:00:12.37 bitrate= 508.5kbits/frame=  312 fps= 61 q=40.0 size=     768kB time=00:00:13.54 bitrate= 464.5kbits/frame=  341 fps= 61 q=40.0 size=    1024kB time=00:00:14.74 bitrate= 569.1kbits/frame=  373 fps= 61 q=40.0 size=    1280kB time=00:00:16.10 bitrate= 651.0kbits/frame=  398 fps= 60 q=40.0 size=    1280kB time=00:00:17.13 bitrate= 612.1kbits/frame=  419 fps= 59 q=40.0 size=    1536kB time=00:00:18.02 bitrate= 698.0kbits/frame=  433 fps= 56 q=40.0 size=    1792kB time=00:00:18.60 bitrate= 789.2kbits/frame=  456 fps= 55 q=40.0 size=    2048kB time=00:00:19.56 bitrate= 857.6kbits/frame=  469 fps= 53 q=40.0 size=    2304kB time=00:00:20.11 bitrate= 938.2kbits/frame=  486 fps= 52 q=40.0 size=    2816kB time=00:00:20.82 bitrate=1108.0kbits/frame=  504 fps= 51 q=40.0 size=    3328kB time=00:00:21.58 bitrate=1262.8kbits/frame=  522 fps= 51 q=40.0 size=    4096kB time=00:00:22.31 bitrate=1503.7kbits/frame=  545 fps= 50 q=40.0 size=    4608kB time=00:00:23.27 bitrate=1621.9kbits/frame=  570 fps= 50 q=40.0 size=    5120kB time=00:00:24.34 bitrate=1723.1kbits/frame=  597 fps= 50 q=40.0 size=    5632kB time=00:00:25.45 bitrate=1812.8kbits/frame=  619 fps= 50 q=40.0 size=    5888kB time=00:00:26.38 bitrate=1827.8kbits/frame=  650 fps= 50 q=40.0 size=    6400kB time=00:00:27.66 bitrate=1894.8kbits/frame=  674 fps= 50 q=40.0 size=    6656kB time=00:00:28.65 bitrate=1903.1kbits/frame=  701 fps= 50 q=40.0 size=    6656kB time=00:00:29.78 bitrate=1830.9kbits/frame=  734 fps= 51 q=40.0 size=    6912kB time=00:00:31.12 bitrate=1819.2kbits/frame=  754 fps= 50 q=40.0 size=    7168kB time=00:00:31.97 bitrate=1836.2kbits/frame=  778 fps= 50 q=40.0 size=    7168kB time=00:00:33.00 --SNIPPED--
  
  bitrate=1518.4kbits/frame=34775 fps= 58 q=40.0 size=  268800kB time=00:24:10.64 bitrate=1518.0kbits/[mp4 @ 0x563ef7ad45c0] Starting second pass: moving the moov atom to the beginning of the file
  
  frame=34783 fps= 58 q=-1.0 Lsize=  269967kB time=00:24:10.68 bitrate=1524.5kbits/s speed= 2.4x
  
  video:246310kB audio:22689kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.359968%
  
  [libx264 @ 0x563ef7ad5a40] frame I:651   Avg QP:27.80  size: 60711
  
  [libx264 @ 0x563ef7ad5a40] frame P:10705 Avg QP:32.02  size: 14279
  
  [libx264 @ 0x563ef7ad5a40] frame B:23427 Avg QP:37.64  size:  2554
  
  [libx264 @ 0x563ef7ad5a40] consecutive B-frames:  6.9%  8.1%  5.5% 79.6%
  
  [libx264 @ 0x563ef7ad5a40] mb I  I16..4: 29.6% 60.8%  9.6%
  
  [libx264 @ 0x563ef7ad5a40] mb P  I16..4:  7.7% 10.0%  1.1%  P16..4: 20.4%  3.8%  2.2%  0.0%  0.0%    skip:54.8%
  
  [libx264 @ 0x563ef7ad5a40] mb B  I16..4:  0.6%  0.6%  0.1%  B16..8: 13.6%  1.0%  0.2%  direct: 0.7%  skip:83.3%  L0:41.6% L1:55.3% BI: 3.1%
  
  [libx264 @ 0x563ef7ad5a40] 8x8 transform intra:54.2% inter:75.7%
  
  [libx264 @ 0x563ef7ad5a40] coded y,uvDC,uvAC intra: 29.1% 50.3% 11.9% inter: 3.4% 4.5% 0.1%
  
  [libx264 @ 0x563ef7ad5a40] i16 v,h,dc,p: 25% 29%  9% 38%
  
  [libx264 @ 0x563ef7ad5a40] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 18% 25%  4%  5%  5%  5%  5%  5%
  
  [libx264 @ 0x563ef7ad5a40] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 14% 17%  7%  8%  9%  6%  7%  4%
  
  [libx264 @ 0x563ef7ad5a40] i8c dc,h,v,p: 51% 22% 19%  9%
  
  [libx264 @ 0x563ef7ad5a40] Weighted P-Frames: Y:2.7% UV:2.1%
  
  [libx264 @ 0x563ef7ad5a40] ref P L0: 74.1% 16.9%  8.9%  0.1%
  
  [libx264 @ 0x563ef7ad5a40] ref B L0: 85.8% 11.6%  2.6%
  
  [libx264 @ 0x563ef7ad5a40] ref B L1: 96.8%  3.2%
  
  [libx264 @ 0x563ef7ad5a40] kb/s:1390.85
  
  [aac @ 0x563ef7ade100] Qavg: 572.905
  
  removed '/var/www/html/uploads/Videos/TV/Avatar The Last Airbender/Season 1/Avatar The Last Airbender - S01E03 - The Southern Air Temple WEBDL-1080p.mkv'
  
  Done transcoding!

• ffmpeg Command Fails in C

  16 février 2016, par cclloyd

  I have a program that stitches together files in ffmpeg using the system() function. It works when I run the command normally, but fails when I run it through the C program (it gets like 80% of the way through then fails saying

  [concat @ 0x7fe299801000] Impossible to open '/Us' parts.txt: No such file or directory
  
  No more output streams to write to, finishing.

  But that only happens in the C program. Not when I run the exact same command manually.

  The command it’s running is

  char command[1024];
  
  sprintf(command, "ffmpeg -f concat -i parts.txt -c copy s%de%02d.ts", season, episode);
  
  system(command);

  And the parts.txt file is as follows : http://pastebin.com/pUAu9mbt

  (Before you ask, yes those are absolute pathnames, not relative)

• ffmpeg and hardcoding subtitles

  8 avril 2015, par Adin Gill

  I have a command like so

  ffmpeg -i "F:\Filebotted\Rail Wars\Season 1\Rail Wars.S01E07(7).You Look Good in That. 1080p.mkv" -map 0:0 -map 0:1 -b:v 750k -b:a 128k -c:v libx264 -c:a mp3 -ac 2 -filter_complex "subtitles=F:\Filebotted\Rail Wars\Season 1\Rail Wars.S01E07(7).You Look Good in That. 1080p.mkv,scale=-1:360" "C:\Users\Adin\Desktop\Testy mc test\Rail Wars.S01E07(7).You Look Good in That. 1080p.mkv"

  Yes it is long but unfortunatly ffmpeg chucks a hissy fit and spits out the following

  [subtitles @ 00000000050ce7c0] Unable to parse option value "FilebottedRail Wars
  
  Season 1Rail Wars.S01E07(7).You Look Good in That. 1080p.mkv" as image size
  
      Last message repeated 1 times
  
  [subtitles @ 00000000050ce7c0] Error setting option original_size to value Fileb
  
  ottedRail WarsSeason 1Rail Wars.S01E07(7).You Look Good in That. 1080p.mkv.
  
  [Parsed_subtitles_0 @ 0000000002c714c0] Error applying options to the filter.
  
  [AVFilterGraph @ 0000000002c5c540] Error initializing filter 'subtitles' with ar
  
  gs 'F:FilebottedRail WarsSeason 1Rail Wars.S01E07(7).You Look Good in That. 1080
  
  p.mkv'
  
  Error configuring filters.

  It works just fine when the file is in the same folder as ffmpeg (I found out that it doesn’t like ’ or - in the filename, but I just spent an hour trying to work out the issue with no avail.

  Any help will be appreciated :)