On Fri, 26 Jul 2019 at 21:02, Peter B. <pb@das-werkstatt.com> wrote:
Hi everyone :)
I was wondering if maybe there's a quicker way to verify lossless transcoding or container rewrapping than these 3 steps:
1. generate content hash during transcoding. 2. generate content hash of output file. 3. diff source-hash with output-hash (using whatever diff-tool).
I'm doing this in bash scripts, but I'm wondering if it would be possible to tell ffmpeg something like this:
"Please generate the output and compare source and target's content hash and only return exit code 0 if they match"
Is that already implemented, or would it be possible to do that?
Thank you very much in advance, Peter B.
Hey there, You could use a muxer such as framemd5: https://ffmpeg.org/ffmpeg-formats.html#framemd5-1 See the link above for usage. -- まさひろ はやし