[Ffmpeg-devel] [Ffmpeg-devel-old] Verifying losslessness

Mike Melanson mike
Wed Aug 3 18:47:54 CEST 2005

	I am prototyping a new lossless video codec. Are there any 
recommendations for how I should validate the losslessness of the codec? 
I could write out each of the original frames of a file as individual 
raw files, encode and decode with the new codec, and diff each decoded 
frame with the original frames. That seems tedious. And storage-intensive.

	Does FFmpeg have built-in facilities to help with this? I see there is 
a -psnr option but I do not understand how it works.

	-Mike Melanson

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