[MEncoder-users] Weird DVD with shifting framerates
audvare at gmail.com
Sun Jun 9 20:38:36 CEST 2013
On Sun, Jun 09, 2013 at 02:39:50PM +0000, Carl Eugen Hoyos wrote:
> Andrew Udvare <audvare <at> gmail.com> writes:
> > I very much suspected what you mention but the company
> > had to do something different mastering the 4th disc in
> > this DVD set because that disc is only usable in
> > encoded form seemingly at 29.970 FPS and so I used
> > yadif with no options on that. That kept everything
> > looking good and audio synced.
> yadif cannot know if the input is telecined or interlaced,
> if you use it on telecined material, the output is
> permanently damaged (you cannot get back the original
> picture quality that you get with a perfrect inverse
> telecine procedure).
The input source from the DVD was 29.970 that clearly had a 2:3 pull-down from 24 FPS but every time I attempted an IVTC with standard methods in mencoder, the audio would always be out of sync.
By the way, I used these options with ffmpeg as on the site examplle: fieldmatch=order=tff:combmatch=full, yadif=deint=interlaced, decimate for the other discs to get IVTC'd material. While it took considerably longer to encode, the quality looks excellent and the audio stays on sync. I will consider re-doing the disc 4 content to see if it does the same. Thanks for the help
> Carl Eugen
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