• Compression Techniques

  Compressor pixel glitch artefact appearing and disapearing

  Posted by Benoit Côté on December 7, 2010 at 4:07 pm

  Hi!

  Sometimes when I compress a files to M2V for DVD or BluRay with compressor, I’m getting some unwanted pixels noise artefact that are appearing/disappearing with some kind of saccade, like a heartbeat or I don’t know what…

  I could compare this bug to a glitch in a mp3 that is compressed from a bad cd… (the sound that you can hear would be like : CHK CHK CHK CHK CHK… )

  In my case, in the final compressed file only the video is affected, audio play normally. Also, my video source is perfect with no mixed media video… everything was shot/animated in HD… And it look ok everywhere.

  Normally, I don’t ask too much to my computer when I’m encoding… but sometimes I have to work on other things so…my guess would be that at this time during the compression, I was probably asking too much for the computer and it’s having repercussion to the compressed files …

  Any other people having this kind of bug?
  I d’ like to understand a little what could make this if my guess is wrong…

  Thanks!

  Benoit Côté replied 15 years, 5 months ago 1 Member · 1 Reply
• 1 Reply

• 

  Benoit Côté

  December 7, 2010 at 6:54 pm

  I also noticed that this “jerk” of pixel appear every 15 frames… so I guess it has something to do with the GOP settings maybe?

Reply to this Discussion! Login or Sign Up