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• Automating FFmpeg/ multi-core support

  23 juillet 2018, par Pablowako

  I need help with FFmpeg/batch. I have a couple of large batches of images (+14000 files each batch, +5 MB each image, .TIFF all of them) and I’m stringing them together into a .mp4 video using FFmpeg.

  The date in the metadata is broken because of the way they’re stored upon creation, so the time and date (T/D) are on the file_name. I need each frame to have its respective T/D (so its File_Name) burnt onto them for accurate measurements (scientific purpose).

  With the help of google and reddit, I’ve managed to semi-automate it like so :

  Master.bat :

  forfiles /p "D:\InputPath" /m "*.TIFF" /S /C "cmd /c C:\SlavePath\slave.bat @file @fname"

  Slave.bat :

  ffmpeg -i "%~1" -vf "drawtext=text=%~2: fontcolor=white: fontsize=30: fontfile='C\:\\FontPath\\OpenSans-Regular.ttf'" "D:\OutputPath\mod_%~1"

  Running Master.bat will output each individual image with the text burnt onto them and change the File_Name to mod_'File_name'.TIFF

  Real example : 2018-06-05—16-00-01.0034.TIFF turns into mod_2018-06-05—16-00-01.0034.TIFF

  The problem is that FFmpeg doesn’t like it when my files have "—" in them ("date—time.miliseconds.TIFF") and doesn’t like the miliseconds either, so I have to change the name of all files "manually" using Bulk Rename Utility (BRU). So, using BRU I rename all files to 00001.TIFF, 00002.TIFF, etc. and FFmpeg likes me again. It works great, but it means I can’t be AFK.

  After that, I have to go back to cmd and manually start the image to video conversion.

  Also, FFmpeg doesn’t seem to be using all cores.

  ---

  I need help finding a way to :

  1. Change master.bat’s output to 00001.TIFF etc. automatically in order of processing (i.e. first to be processed is 1.TIFF, 2nd is 2.TIFF)
  2. Add ffmpeg’s img-to-vid function to the automating system
  3. Get my CPU to use all the cores effectively if possible. 2014/15 posts found on google make it seem as though FFmpeg doesn’t support multi-core or hyperthreading.

  ---

  64bit Windows, i7 7700hq, gtx 1050 4Gb, C : SSD, D : HDD

• FFMPEG, "Could not open file.. " "av_interleaved_write_frame() : Input/output error"

  10 juillet 2018, par justaguytrynabuildawebsite

  Trying to run a simple ffmpeg line on my Ubuntu 16.04 vps shell,

  ffmpeg -ss 1 -i /var/www/html/lib/vid/4581989_022810100718.mp4 -r 1 -vframes 1 /var/www/html/lib/thumbnail/4581989_022810100718/20.jpg

  but am met with

  Could not open file 

  and

  av_interleaved_write_frame(): Input/output error

  I have already tried giving the ../lib/vid folder in question 777 permissions but it didnt help.

  Full print-out :

  ffmpeg version 2.8.14-0ubuntu0.16.04.1 Copyright (c) 2000-2018 the FFmpeg developers
  
   built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.9) 20160609
  
   configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --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-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
  
  libavutil      54. 31.100 / 54. 31.100
  
  libavcodec     56. 60.100 / 56. 60.100
  
  libavformat    56. 40.101 / 56. 40.101
  
  libavdevice    56.  4.100 / 56.  4.100
  
  libavfilter     5. 40.101 /  5. 40.101
  
  libavresample   2.  1.  0 /  2.  1.  0
  
  libswscale      3.  1.101 /  3.  1.101
  
  libswresample   1.  2.101 /  1.  2.101
  
  libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/html/lib/vid/4581989_022810100718.mp4':
  
  Metadata:
  
  major_brand     : isom
  
  minor_version   : 512
  
  compatible_brands: isomiso2avc1mp41
  
  encoder         : Lavf56.36.100
  
  Duration: 00:00:04.90, start: 0.000000, bitrate: 2595 kb/s
  
  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1820x1024 [SAR 1:1 DAR 455:256], 2593 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
  
  Metadata:
  
    handler_name    : VideoHandler
  
  [swscaler @ 0x1652280] deprecated pixel format used, make sure you did set range correctly
  
  Output #0, image2, to '/var/www/html/lib/thumbnail/4581989_022810100718/20.jpg':
  
  Metadata:
  
  major_brand     : isom
  
  minor_version   : 512
  
  compatible_brands: isomiso2avc1mp41
  
  encoder         : Lavf56.40.101
  
  Stream #0:0(und): Video: mjpeg, yuvj420p(pc), 1820x1024 [SAR 1:1 DAR 455:256], q=2-31, 200 kb/s, 1 fps, 1 tbn, 1 tbc (default)
  
  Metadata:
  
    handler_name    : VideoHandler
  
    encoder         : Lavc56.60.100 mjpeg
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
  
  Press [q] to stop, [?] for help
  
  [image2 @ 0x16103a0] Could not open file : /var/www/html/lib/thumbnail/4581989_022810100718/20.jpg
  
  av_interleaved_write_frame(): Input/output error
  
  frame=    1 fps=0.0 q=3.4 Lsize=N/A time=00:00:01.00 bitrate=N/A    
  
  video:48kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
  
  Conversion failed!

• ffmpeg - MXF with 4-channel audio : how to create proxies (high quality / small file size) and preserve the audio mapping

  8 juillet 2018, par WhatsYourFunction

  We’ve got MXF sources (h.264 video at UHD (3840x2160) with 4-channels of (4 - PCM S24 mono sources)
  We want Proxies — smallest file size at highest picture quality
  The compression applied to the video and audio essences can be anything,
  And the wrapper can be either MXF or QuickTime
  but we need to preserve the audio mapping (i.e. the Proxy must be 4-channel audio)

  How to do that with ffmpeg ?

  • EDIT Adding ffprobe :

  Metadata :

  uid : ***

  generation_uid : ***

  company_name : CANON

  product_name : EOS C300 Mark II

  product_version : 1.00

  product_uid : ***

  modification_date : 2018-06-28T08:29:24.000000Z

  material_package_umid : ***

  timecode : 02:50:31:17

  Duration : 00:06:35.40, start : 0.000000, bitrate : 395842 kb/s

  Stream #0:0 : Video : h264 (High 4:2:2 Intra), yuv422p10le(tv, progressive), 3840x2160, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 23.98 tbn, 47.95 tbc

  Metadata :

   file_package_umid: ***

  Stream #0:1 : Audio : pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s

  Metadata :

   file_package_umid: ***

  Stream #0:2 : Audio : pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s

  Metadata :

   file_package_umid: ***

  Stream #0:3 : Audio : pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s

  Metadata :

   file_package_umid: ***

  Stream #0:4 : Audio : pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s

  Metadata :

   file_package_umid: ***