[FFmpeg-user] Deinterlacing VHS
cus at passwd.hu
Tue May 12 20:09:10 EEST 2020
On Tue, 12 May 2020, Noeck wrote:
> I have digitized VHS video recordings on my computer. The Video is
> originally recorded in a PAL system (interlaced). I would like to
> improve the video quality with some filters. Cropping and color
> correction is clear.
> But deinterlacing is hard, as the lines of the half-images are not
> exactly one pixel apart because the resolution is not identical with the
> analogue resolution on tape. The framerate should be like on tape. yadif
> does improve things a bit.
> Is this just an ill-posed problem or are there special settings to
> achieve a good deinterlacing in this case?
If your source VHS is OK, and VHS is smooth on TV then you probably made a
mistake during digitalizing your content and some unintended conversion or
scaling happended there. You should re-digialize your content keeping the
original PAL resolution, and encoding using lossless or interlaced
encoder. Otherwise it is doubtful that you can really improve it later.
More information about the ffmpeg-user