Recherche avancée

Sur d’autres sites (7974)

• shell scripting no such file or directory

  15 mars 2018, par Toto Tata

  I wrote a shell script that calls the ffmpeg tool but when I run it, it says No such file or directory yet it does !

  Here is my script :

  #!/bin/bash
  
  
  
  MAIN_DIR="/media/sf_data/pipeline"
  
  
  
  FFMPEG_DIR="/media/sf_data/livraison_transcripts/ffmpeg-git-20180208-64bit-static"
  
  
  
  for file in MAIN_DIR/audio_mp3/*.mp3;
  
  do
  
      cp -p file FFMPEG_DIR;
  
  done
  
  
  
  for file in FFMPEG_DIR/*.mp3;
  
  do
  
      ./ffmpeg -i ${file%.mp3}.ogg
  
      sox $file -t raw --channels=1 --bits=16 --rate=16000 --encoding=signed-
  
  integer --endian=little ${file%.ogg}.raw;
  
  done
  
  
  
  for file in FFMPEG_DIR/*.raw;
  
  do
  
      cp -p file MAIN_DIR/pipeline/audio_raw/;
  
  done

  and here is the debug response :

  cp: cannot stat ‘file’: No such file or directory
  
  ./essai.sh: line 14: ./ffmpeg: No such file or directory
  
  sox FAIL formats: can't open input file `FFMPEG_DIR/*.mp3': No such file or 
  
  directory
  
  cp: cannot stat ‘file’: No such file or directory

  FYI I’m running CentOS7 on VirtualBox

  Thank you

• Use filter_complex output as MKV attachment in ffmpeg

  19 avril 2020, par Rapper_skull

  I'm trying to scale and crop an image and use it as MKV attachment in one shot, but without success.
I understand that the "-attach" command does exactly that, but the problem is that I don't have the final image as a file. Instead I'm trying to crop and scale the file on the fly, doing something like this :

  



  ffmpeg -fflags +genpts \
-i video.h265 \
-i audio.ac3 \
-i sub.ass \
-i cover_img.jpg \
-filter_complex "[3:v]crop=in_h:in_h,scale=600:600[cover]; [3:v]crop=in_h:in_h,scale=120:120[small_cover]; [3:v]scale='-1:600'[cover_land]; [3:v]scale='-1:120'[small_cover_land]" \
-map 0:v:0 -map 1:a:0 -map 2:s:0 \
-map "[cover]" -disposition:v:1 attached_pic -metadata:s:v:1 filename="cover.jpg" -metadata:s:v:1 mimetype="image/jpeg" \
-map "[small_cover]" -disposition:v:2 attached_pic -metadata:s:v:2 filename="small_cover.jpg" -metadata:s:v:2 mimetype="image/jpeg" \
-map "[cover_land]" -disposition:v:3 attached_pic -metadata:s:v:3 filename="cover_land.jpg" -metadata:s:v:3 mimetype="image/jpeg" \
-map "[small_cover_land]" -disposition:v:4 attached_pic -metadata:s:v:4 filename="small_cover_land.jpg" -metadata:s:v:1 mimetype="image/jpeg" \
-r 24000/1001 -c:s ass -c:a copy \
-c:v mjpeg -c:v:0 libx265 \
out.mkv


  



  But it doesn't work, because the streams are mapped as video, not attachments.

  



  I also tried to change the "[3:v]" in filter_complex to "[3:t]", but it doesn't work, since pictures are considered as video streams.

  



  Now I resorted to a two-step process, but I'm looking for a way to do both things at the same time :

  



  ffmpeg -i cover_img.jpg \
-filter_complex "[0:v]crop=in_h:in_h,scale=600:600[cover]; [0:v]crop=in_h:in_h,scale=120:120[small_cover]; [0:v]scale='-1:600'[cover_land]; [0:v]scale='-1:120'[small_cover_land]" \
-c:v mjpeg \
-map "[cover]" cover.jpg \
-map "[small_cover]" small_cover.jpg \
-map "[cover_land]" cover_land.jpg \
-map "[small_cover_land]" small_cover_land.jpg

ffmpeg -fflags +genpts \
-i video.h265 \
-i audio.ac3 \
-i sub.ass \
-map 0:v:0 -map 1:a:0 -map 2:s:0 \
-attach "cover.jpg" -metadata:s:t:0 mimetype="image/jpeg" \
-attach "small_cover.jpg" -metadata:s:t:1 mimetype="image/jpeg" \
-attach "cover_land.jpg" -metadata:s:t:2 mimetype="image/jpeg" \
-attach "small_cover_land.jpg" -metadata:s:t:3 mimetype="image/jpeg" \
-r 24000/1001 -c:s ass -c:a copy \
-c:v libx265 \
out.mkv


  



  Thank you for your help.

  


• ffmpeg : how to swap audio channels

  15 septembre 2020, par Kevin Gilbert

  I have an mp4 file where the front and rear channels are swapped (front <-> rear not left <-> right). How can I swap the audio streams ?

  &#xA;

  What I've tried (amongst others) :

  &#xA;

  ffmpeg -i in.mp4 -filter 'channelmap=map=FL-BL|FR-BR|BL-FL|BR-FR' -c:v copy out.mp4


  &#xA;

  what I get :

  &#xA;

  Filtergraph 'channelmap=map=FL-BL|FR-BR|BL-FL|BR-FR' was defined for video output stream 0:0 but codec copy was selected.
Filtering and streamcopy cannot be used together.


  &#xA;

  tia

  &#xA;