[FFmpeg-user] Trying to remember how I did this.....

[Andrew Randrianasulu]

ср, 4 окт. 2023 г., 10:34 Mark Dm <markosjal at gmail.com>:

> Its NOT Telecine. It is Digital Video 8 video at 27.97 FPS
> I am looking specifically for the setting that derives the 59.94FPS from
> the 27.97 FPS source with such beauty and without deinterlace.
>

this answer mentions yadif=1

https://superuser.com/questions/610618/double-deinterlace-with-full-motion-ffmpeg-yadif-50i-50p-60i-60p

may be it will work for your case?



> On Wed, Oct 4, 2023 at 12:28 AM Laine <llee040 at sbcglobal.net> wrote:
>
> >
> >
> >
> > > On Oct 4, 2023, at 1:36 AM, Mark Dm <markosjal at gmail.com> wrote:
> > >
> > > I had some DVD Video that I had converted using ffmpeg some years ago.
> > What
> > > I did was converted NTSC DVD video (4x3) to 960x720 @59.94 FPS and the
> > > result was incredible. I had found a forum some time later where
> another
> > > user claimed he had done the same and he too had incredible results.
> The
> > > result as I recall is way better than deinterlacing and I still have
> some
> > > of the videos I upscaled this way. . It essentially creates a frame
> > > for every field and if I pause the video I may see a slight blur but no
> > > scan lines. I also see no scan lines while video is playing
> > >
> > > I do remember that I did it all with ffmpeg command line conversions.
> It
> > > does NOT use deinterlacing as that throws away half the resolution, and
> > > results in visible scan lines. Instead it increases the frame rate by
> two
> > > and I chose to upscale to 720P. As I recall I also did some PAL as well
> > as
> > > NTSC using the same method.
> > >
> > > I am looking to recover this method if I can as I will be transferring
> a
> > > bunch of Digital8 videos and want to do it the same way to create mp4
> > files
> > > at 720P at 59.94FPS
> > >
> > > Any help appreciated
> > >
> > > THanks
> > >
> > > Mark
> >
> > For NTSC DVD you might want pullup. There’s more than one way to apply
> > pullup. What normally works best for me for NTSC DVD is to specify the
> > output frame rate with "-r 24000/1001" and use some sort of fieldmatch
> > video filter such as “fieldmatch" alone or
> > "fieldmatch=order=tff:combmatch=none,decimate”. You may find that it
> isn’t
> > necessary to specify the 24.976 frame rate. Use the filter before scaling
> > or cropping in the filter chain. The source video needs to be pretty
> clean
> > regarding pulldown (without or nearly without any dropped frames). You
> > should be able to identify the pulldown pattern in your source by
> stepping
> > through it frame by frame with a video player app such as IINA. By
> default
> > it’s the “.” (period) key. If it’s telecine, you’ll be able to observe 3
> > progressive frames followed by 2 pairs of interlaced frames. Something to
> > try, anyway.
> >
> > L. Lee
> >
> >
> >
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