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• avcodec/h264dec : fix possible out-of-bounds array access

  25 août 2021, par Niklas Haas

  avcodec/h264dec : fix possible out-of-bounds array access
  If slice_type is > 9, the access to ff_h264_golomb_to_pict_type is
  
  out-of-bounds. Fix this by simply setting the slice_type to 0 in this
  
  case.
  This is completely inconsequential because the value is only being used
  
  to being used as an offset in the calculation of the film grain seed
  
  value, a corruption of which is practically invisible.
  Fixes coverity ticket #1490802
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] libavcodec/h264dec.c

• FFmpeg batch convert multiple files

  11 mars 2019, par John

  This command works great :

  ffmpeg \
  
  -i /mnt/share/Movies2/"nameofmovie.mkv" \
  
  -map 0:0 \
  
  -map 0:1 \
  
  -map 0:2 \
  
  -c:v libx264 \
  
  -preset veryfast \
  
  -tune film \
  
  -crf 18 \
  
  -c:a:0 copy \
  
  -c:a:1 copy \
  
  /mnt/share/Converted/"nameofmovie".mkv

  But i want to either be able to read the input file from a text file or to run this command one after another for each file i want to convert. Is there a script i can set up to do this ? Not all the files are in the same folder or the same format so something where i could just change the file name and format would be great. I used to have a bash script that could do this for an entire folder but that’s not what i am trying to do here. I am using Ubuntu server 18.04
  Also i’m pretty new to this i’ve found this for a whole folder :

  for i in *.avi;
  
  do name=`echo $i | cut -d'.' -f1`;
  
  echo $name;
  
  ffmpeg -i "$i" "${name}.mov";
  
  done

  But i dont know how to adapt this for individual files

• MPG to MP4 Video Conversion after Azure Media Services Retirement [closed]

  30 juillet 2024, par Yousef

  I'm hosting a C# Blazor Application in Azure App Service and was leveraging Azure Media Services to transcode mpg videos to mp4 in Jobs. However, Azure Media Services was retired last month and the services are going to stop next week so I have to find an alternative.
I have looked at multiple alternatives but couldn't find a simple conversion tool.
In Azure Media Services I was using the following configuration


  


  I can't seem to find the same configuration in the tools I have looked at. I tried Bitmovin but the encoding takes 5 - 10 Minutes (unlike Azure Media Services which takes 2 minutes) and the result of the encoding is a folder with 4 mp4 segments that are not part of the original mpg video.

  


  I tried ffmpeg locally but I can't get it to work in an Azure App Service.

  


  Does anyone have any suggestion of an alternative to Azure Media Service when it comes to Transcoding mpg videos to mp4 in a background task ?