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• Create Video Thumbnail of All Files in a Directory via FFmpeg and PHP

  2 février 2012, par Hashid Hameed

  I have searched all over the Google and StackOverFlow, but still did not find a solution for this.

  I want to generate video thumbnail of all mp4 video files in a directory and name the thumbnails as "filename.mp4".jpg

  I have ffmpeg and ffmpeg-php installed on my server. I also succeeded in creating thumbnails of one file at a time.

  So this is the situation, I have a directory named uploads which has lots of mp4 videos.
  Now, when I run the script, thumbnail of size 100x100 shoud be created automatically and placed in another folder "skrin". Eg : xxx.mp4 should have xxx.mp4.jpg has the thumb name.

  IMPORTANT : My filenames have spaces, single quotes, brackets etc in their file names. So the script should be able to handle this.

  Could some one help me ? I use the following shell command in php using exec to generate thumb of an individual video.

  exec("/usr/local/bin/ffmpeg -itsoffset -105 -i 'xxx haha.mp4' -vcodec mjpeg -vframes 1 -an -f rawvideo -s 100x100 'xxx haha.mp4.jpg'");

• Batch file to perform multiple conversions in a row

  16 septembre 2020, par ben158

  I'm trying to write a batch file that can be launched from Handbrake GUI with the "send file to" feature, that will split an MKV into chapters with MKVmerge, then convert all those new files into mp4s with ffmpeg. Handbrake passes only one argument into the batch file, the full file path of the output (surrounded by quotes). I'm very new to batch scripting and am having difficulty getting it all to work together — all the individual parts work just fine when absolute paths are given. Here's the content of the .bat file :

  


  START /WAIT "C:\Program Files\MKVToolNix\mkvmerge.exe -o output.mkv --split chapters:all %1"
for %%i in (*.mkv) do C:\ffmpeg\bin\ffmpeg.exe -i "%%i" -loop 1 -i "%%~dpi"\folder.jpg -map 1:v -map 0:a -c:a ac3 -b:a 640K -pix_fmt yuv420p -c:v libx264 -shortest -fflags +shortest -max_interleave_delta 100M "%%~ni.mp4"


  


  Any glaring mistakes I'm making ? I've been at this for hours reading SO threads and documentation, and can't figure it out for the life of me. Any help is appreciated, thanks in advance.

  


• avcodec/aacdec : fix parsing of dual mono files

  5 juillet 2022, par James Almer

  avcodec/aacdec : fix parsing of dual mono files
  Dual mono files report a channel count of 2 with each individual channel in its
  
  own SCE, instead of both in a single CPE as is the case with standard stereo.
  
  This commit handles this non default channel configuration scenario.
  Fixes ticket #1614
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] libavcodec/aacdec_template.c