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• fftools/ffmpeg_mux : replace monotonous with monotonic

  29 août 2023, par Leo Izen

  fftools/ffmpeg_mux : replace monotonous with monotonic
  The word "monotonous" means "spoken in a monotone" which is not what we
  
  mean here. We mean "monotonic" i.e. nondecreasing.
  Signed-off-by : Leo Izen <leo.izen@gmail.com>
  

  • [DH] fftools/ffmpeg_mux.c

• How to use ffmpeg with h.265 (or h.264) codec ?

  6 octobre 2022, par randomuser1

  Normally I start recording the camera image with the command :

  



  ffmpeg -y -f vfwcap -r 25 -i 0 OUT.mp4

  



  but I'm not sure which coded do I use in here (I'm just beginning my adventure with ffmpeg), however I found on this webpage this command :

  



  ffmpeg -i INPUT -c:a copy -x265-params crf=25 OUT.mov

  



  But when I run it - I get the following error :
INPUT: No such file or directory"

  



  I changed the INPUT word above also to 0, so the command is

  



  ffmpeg -i 0 -c:a copy -x265-params crf=25 OUT.mov,
but error stays similar (0: no such file or directory).
How can I grab the camera image and save it to a file while using the H.265 ?

  


• Adding mp3 metadata with space in ffmpeg using bash [duplicate]

  15 septembre 2019, par ctrlnot

  This question already has an answer here :

  • When to wrap quotes around a shell variable ?
    
    5 answers
    

  I have this bash script on downloading youtube videos then convert it to mp3 using youtube-dl and ffmpeg.

  #!/bin/bash
  
  
  
  ytlink=""
  
  outputFileName=""
  
  title=""
  
  artist=""
  
  album=""
  
  
  
  while getopts l:o:t:r:b: flag; do
  
    case "${flag}" in
  
      l) ytlink="${OPTARG}";;
  
      o) outputFileName="${OPTARG}";;
  
      t) title="${OPTARG}";;
  
      r) artist="${OPTARG}";;
  
      b) album="${OPTARG}";;
  
    esac
  
  done
  
  
  
  youtube-dl "$ytlink" --add-metadata --extract-audio --audio-format mp3 --output "temp.%(ext)s"
  
  
  
  tempFilename="temp.mp3"
  
  outputFileName="$outputFileName.mp3"
  
  
  
  args+=("-i" "$tempFilename" "-metadata" "title='$title'" "-metadata" "artist='$artist'" "-metadata" "album='$album'" "-metadata" "comment=Source:$ytlink")
  
  ffmpeg -loglevel debug ${args[@]} -acodec copy "$outputFileName"
  
  rm "$tempFilename"

  This script is fine if I have one word title/artist/album. However, if I have a space, ffmpeg interprets each word before space as another parameter. This is how I use this on command line :

  ./yttomp3.sh -l "https://www.youtube.com/watch?v=KwQnSHAilOQ" -o "Lee - Autumn Day" -t "Autumn Day" -r "Lee" -b "(Free) Lo-fi Type Beat - Autumn Day"

  The debug output of ffmpeg :

  Splitting the commandline.
  
  Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
  
  Reading option '-i' ... matched as input url with argument 'temp.mp3'.
  
  Reading option '-metadata' ... matched as option 'metadata' (add metadata) with argument 'title='Autumn'.
  
  Reading option 'Day'' ... matched as output url.
  
  Reading option '-metadata' ... matched as option 'metadata' (add metadata) with argument 'artist='Lee''.
  
  Reading option '-metadata' ... matched as option 'metadata' (add metadata) with argument 'album='(Free)'.
  
  Reading option 'Lo-fi' ... matched as output url.
  
  Reading option 'Type' ... matched as output url.
  
  Reading option 'Beat' ... matched as output url.
  
  Reading option '-' ... matched as output url.
  
  Reading option 'Autumn' ... matched as output url.
  
  Reading option 'Day'' ... matched as output url.
  
  Reading option '-metadata' ... matched as option 'metadata' (add metadata) with argument 'comment=Source:https://www.youtube.com/watch?v=KwQnSHAilOQ'.
  
  Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'copy'.
  
  Reading option 'Lee - Autumn Day.mp3' ... matched as output url.
  
  Finished splitting the commandline.

  I tried enclosing the arguments to quotes on the script but it’s still not working. How should I deal with this ? Thanks.