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• DISABLE post processing(ffmpeg) in youtube-dl(2020.01.24)

  1er février 2020, par user3515562

  I want to disbale post process in youtube-dl(2020.01.24).
  My batch file contains

  set /p ytlink=Enter the link of Youtube Video:-    
  
  youtube-dl -x -o D:\%%(title)s.%%(ext)s %ytlink%  
  
  pause  

  The youtube-dl first downloads webm file or any other file than use post process ffmpeg.exe to convert it.
  I want to disable post process.Their must be no post process happening after youtube-dl download.
  
   x is the option to only download audio file of the YouTube video in webm format .There is no post processing involved.But youtube-dl by default tries to convert the webm file to some other format, which is post processing.Post processing of audio file by default is one that i want to disable
  OS=Windows 10

• Speed up FFmpeg processing time

  14 février 2020, par ahmed galal

  I’m using FFmpeg on android to :

  1- merge 3 videos

  2- add audio

  3- add logo

  4- trim one of the 3 videos

  5- change fps for the output

  I have implemented the right code but it took 30 min. for (120 fps, 1:17 min) video.
  I added the flag ( -preset ultrafast ) and time decreased to 6 min.
  I need the time to be shorter than 6min. (2-3 min). Is this possible ? Is there any better alternatives to ffmpeg ?

  This is my code for ffmpeg :

  String command2 = "-y -i " + logo + " -i " + intro + " -ss " + start + " -t " + (end-start) +
  
              " -async 1 -i " + inputFile + " -i " + outro + " -i " + audio
  
              + " -filter_complex [0]scale=1280*0.15:-1,colorchannelmixer=aa=0.5[o];" +
  
              "[1]fifo[v1];[2]fifo[v2];[3]fifo[v3];" +
  
              "[v1][v2][v3]concat=3[v];" +
  
              "[v][o]overlay=5:5[o3]" +
  
              " -map [o3] -map 4:a" +
  
              " -r " + fps + " -shortest -preset ultrafast -threads 8 -cpu-used 3 -c:a copy " + outFile;

• Concatenating on Windows throws "Invalid data found when processing input" while it works on Mac and Linux

  15 février 2020, par miguelmorin

  I need to run a command with a nightly build of FFMPEG to report a bug on the concat protocol. I found it difficult to compile from source with libx264 support on Linux, and I want to spare my Mac computer, so I use the nightly build on Windows from Zeranoe.

  I call this command to concatenate the files :

  ffmpeg -safe 0 concat -i files_to_combine -vcodec libx264 show.mp4

  where files_to_combine is :

  file ./short_DSC_0013.MOV
  
  file ./short_DSC_0014.MOV
  
  file ./short_DSC_0015.MOV
  
  file ./short_DSC_0016.MOV
  
  file ./short_DSC_0017.MOV
  
  file ./short_DSC_0018.MOV
  
  file ./short_DSC_0019.MOV

  I call this command from the directory containing the video files and files_to_combine.

  On Windows with a nightly build, I get the error :

  files_to_combine : Invalid data found when processing input
  

  I changed file ./DSC_0013.MOV to these options, all with the same error :

  file 'short_DSC_0013.MOV'
  
  file '.\short_DSC_0013.MOV'
  
  file 'F:\short_DSC_0013.MOV'

  How can I debug this error, or what is the syntax for concatenating on Windows with a nightly build ?

  Update with log-level 48

  I ran the same command with -v 48 and got :

  F :\brain squids>C :\Users\migue\Desktop\ffmpeg-20200211-f15007a-win64-static\bin\ffmpeg.exe -v 48 -i files_to_combine -vcodec libx264 show.mp4
  ffmpeg version git-2020-02-11-f15007a Copyright (c) 2000-2020 the FFmpeg developers
    built with gcc 9.2.1 (GCC) 20200122
    configuration : —enable-gpl —enable-version3 —enable-sdl2 —enable-fontconfig —enable-gnutls —enable-iconv —enable-libass —enable-libdav1d —enable-libbluray —enable-libfreetype —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libopus —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libtheora —enable-libtwolame —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxml2 —enable-libzimg —enable-lzma —enable-zlib —enable-gmp —enable-libvidstab —enable-libvorbis —enable-libvo-amrwbenc —enable-libmysofa —enable-libspeex —enable-libxvid —enable-libaom —enable-libmfx —enable-ffnvcodec —enable-cuvid —enable-d3d11va —enable-nvenc —enable-nvdec —enable-dxva2 —enable-avisynth —enable-libopenmpt —enable-amf
    libavutil      56. 39.100 / 56. 39.100
    libavcodec     58. 68.102 / 58. 68.102
    libavformat    58. 38.100 / 58. 38.100
    libavdevice    58.  9.103 / 58.  9.103
    libavfilter     7. 75.100 /  7. 75.100
    libswscale      5.  6.100 /  5.  6.100
    libswresample   3.  6.100 /  3.  6.100
    libpostproc    55.  6.100 / 55.  6.100
  Splitting the commandline.
  Reading option ’-v’ ... matched as option ’v’ (set logging level) with argument ’48’.
  Reading option ’-i’ ... matched as input url with argument ’files_to_combine’.
  Reading option ’-vcodec’ ... matched as option ’vcodec’ (force video codec (’copy’ to copy stream)) with argument ’libx264’.
  Reading option ’show.mp4’ ... matched as output url.
  Finished splitting the commandline.
  Parsing a group of options : global .
  Applying option v (set logging level) with argument 48.
  Successfully parsed a group of options.
  Parsing a group of options : input url files_to_combine.
  Successfully parsed a group of options.
  Opening an input file : files_to_combine.
  [NULL @ 0000021c781784c0] Opening ’files_to_combine’ for reading
  [file @ 0000021c78179580] Setting default whitelist ’file,crypto,data’
  [AVIOContext @ 0000021c781817c0] Statistics : 182 bytes read, 0 seeks
  files_to_combine : Invalid data found when processing input
  

  The contents of files_to_combine is :

  file ’short_DSC_0013.MOV’
  file ’short_DSC_0014.MOV’
  file ’short_DSC_0015.MOV’
  file ’short_DSC_0016.MOV’
  file ’short_DSC_0017.MOV’
  file ’short_DSC_0018.MOV’
  file ’short_DSC_0019.MOV’
  

  Update because of wrong command

  I had mistyped the command. The right command has a -f in front of concat, which I found because the accepted answer was able to make the command work in a similar environment :

  ffmpeg -safe 0 -f concat -i files_to_combine -vcodec libx264 show.mp4