-----Original Message----- From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of Paul B Mahol Sent: 10 July 2015 15:23 To: FFmpeg user questions Subject: Re: [FFmpeg-user] Framemd5 filter error for atomised Avid 1:10 bit.mxf
On 7/10/15, Kieran O'Leary <kieran.ole...@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. ---- I'm getting out of my depth here, but isn't uyvy422 8-bit? Would avup 10 bit be uyvy42210? I'm having a little difficulty with the term "packed". Are you referring to the packed/planar distinction? And yes, the 720*592 dimension seems odd. Seems to pop up here as well: https://trac.ffmpeg.org/ticket/162 _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
