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• ffmpeg how to remove black borders when resizing an image

  3 June 2021, by Mapg

  I am creating some thumbnails using FFmpeg and I see that some black borders are created when I resize them.

  


  I guess this is happening because the video source dimension doesn't match exactly the target dimension, so FFmpeg fills out the blank space with this black color.

  


  My question is ...

  


  Can I change this "black color" used by FFmpeg by default so I can match these extra borders added with the background of my application?

  


  If this is not possible ...

  


  Can I convert these black borders to a transparent area so I can create a PNG to match my background which has a different color (a kind of light green)

  


  I have attached an example where you will see two black pixels height in the bottom zone of the picture.

  


  This is what I want to convert to transparent or being able to choose my own color.

  


  Any idea to solve this issue will be very helpful for me?

  


  Thank you very much in advance!

  


  Mapg

  


  

  


• avcodec: add decoder for argonaut games' adpcm codec

  26 January 2020, by Zane van Iperen

  avcodec: add decoder for argonaut games' adpcm codec
  Adds support for the ADPCM variant used by some Argonaut Games' games,
  
  such as 'Croc! Legend of the Gobbos', and 'Croc 2'.
  Signed-off-by: Zane van Iperen <zane@zanevaniperen.com>
  

  • [DH] Changelog
  • [DH] doc/general.texi
  • [DH] libavcodec/Makefile
  • [DH] libavcodec/adpcm.c
  • [DH] libavcodec/allcodecs.c
  • [DH] libavcodec/avcodec.h
  • [DH] libavcodec/codec_desc.c
  • [DH] libavcodec/version.h

• 3 times concat, 3 times the same video, with 1 command running the entire folder

  20 April 2020, by Amazon

  I have assumed the example below and my code I want to keep it short. Thank you for taking time for me
3 times concat, 3 times the same video, with 1 command running the entire folder

  



    ffmpeg -y -f concat -i "a\1.txt" -c copy b/1.mp4
  ffmpeg -y -f concat -i "a\2.txt" -c copy b/2.mp4
  ffmpeg -y -f concat -i "a\3.txt" -c copy b/3.mp4
  ffmpeg -y -f concat -i "a\4.txt" -c copy b/4.mp4
  ffmpeg -y -f concat -i "a\5.txt" -c copy b/5.mp4
  ffmpeg -y -f concat -i "a\6.txt" -c copy b/6.mp4
  ffmpeg -y -f concat -i "a\7.txt" -c copy b/7.mp4
  ffmpeg -y -f concat -i "a\8.txt" -c copy b/8.mp4
  ffmpeg -y -f concat -i "a\9.txt" -c copy b/9.mp4
  ffmpeg -y -f concat -i "a\10.txt" -c copy b/10.mp4
  ffmpeg -y -f concat -i "a\11.txt" -c copy b/11.mp4
  ffmpeg -y -f concat -i "a\12.txt" -c copy b/12.mp4
  ffmpeg -y -f concat -i "a\13.txt" -c copy b/13.mp4
  ffmpeg -y -f concat -i "a\14.txt" -c copy b/14.mp4
  ffmpeg -y -f concat -i "a\15.txt" -c copy b/15.mp4
  ffmpeg -y -f concat -i "a\16.txt" -c copy b/16.mp4
  ffmpeg -y -f concat -i "a\17.txt" -c copy b/17.mp4
  ffmpeg -y -f concat -i "a\18.txt" -c copy b/18.mp4
  ffmpeg -y -f concat -i "a\19.txt" -c copy b/19.mp4
  ffmpeg -y -f concat -i "a\20.txt" -c copy b/20.mp4
  ffmpeg -y -f concat -i "a\21.txt" -c copy b/21.mp4
  ffmpeg -y -f concat -i "a\22.txt" -c copy b/22.mp4
  ffmpeg -y -f concat -i "a\23.txt" -c copy b/23.mp4
  ffmpeg -y -f concat -i "a\24.txt" -c copy b/24.mp4
  ffmpeg -y -f concat -i "a\25.txt" -c copy b/25.mp4
  ffmpeg -y -f concat -i "a\26.txt" -c copy b/26.mp4
  ffmpeg -y -f concat -i "a\27.txt" -c copy b/27.mp4
  ffmpeg -y -f concat -i "a\28.txt" -c copy b/28.mp4
  ffmpeg -y -f concat -i "a\29.txt" -c copy b/29.mp4
  ffmpeg -y -f concat -i "a\30.txt" -c copy b/30.mp4


  



  File txt 1..... 30

  



  file 1.mp4
file 1.mp4
file 1.mp4


  



  file txt 2 
 file 2.mp4
 file 2.mp4
 file 2.mp4
........ 30