[FFmpeg-user] Framemd5 filter error for atomised Avid 1:10 bit.mxf

Paul B Mahol onemda at gmail.com
Fri Jul 10 16:22:43 CEST 2015

On 7/10/15, Kieran O'Leary <kieran.oleary at irishfilm.ie> wrote:
>> framemd5 won't help you determine 'how much' visual difference there is
>> between an exported file and a reference file. Depending on how you run
>> it, framemd5 would only confirm if the two files decode to the same raw
>> frame or different ones, it's a yes/no answer and not a 'how much'. I
>> suggest sending both streams as input to the psnr or ssim filters which
>> are better able to quantify visual difference.
>>Also ffmpeg is not detecting the pixel format of your mxf file, you may
>> have to declare the pixel format before the input.
> Dave Rice
> --
> Hi Dave,
> Thanks for that. I will set the pixel format later and see if that gets it
> working.
> Re the framemd5, I should have been more clear. I wanted to use the
> framemd5s to prove that the video stream was altered when transcoding from
> 1:1 10bit to v210. I realise that it would just give a yes or no answer to
> this question. I honestly didn't have a clue how to compare them after that
> and see how much alteration occurs. Thanks yet again for your invaluable
> help.

AVup is just packed uyvy422.
But something is not correct as there is greenish thing on top, also the
dimensions doesnt seems to be correct.

> -K
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