Den 29.05.2023 22:47, skrev Phyllis Smith:

More feedback to add to Andrew's reply.

Using Deinterlace creates a dvd.mpg file only marginally larger than without deinterlacing.
But the result is visually better than without deinterlacing, which is awful jagged at camera movements zoom/pan, at least on my 2560x1440 res monitor using VLC.

I do not understand the above sentence.  Which result is better? with deinterlacing or without deinterlacing? So Progressive is better? which makes more sense to me in this day and age.  As far as I read on the internet, DVDs can be either Progressive or Interlaced.

Leaving it dvd rendering interlaced is worst jagged; selecting deinterlaced is better both with default mpeg2enc ("TFF, interlaced") and optional FFMpeg (progressive). Some of the jagged edges and lines is expected to be caused by the scaled up low vertical SD wide resolution.
I didn't notice visible +/- chroma difference by selecting "use yuv420p dvd deinterlace format"

I will try to compare with DeVeDe's deinterlace YADIF filter and two pass rendering.
(DeVeDe's second FFMPEG deinterlace filter exited the dvd rendering.)

du -sh dvd-wide-*/*.mpg dvd-wide-*/*/movie*.mpg
598M    dvd-wide-dv01_20230526-225332/dvd.mpg
598M    dvd-wide-dv01-ffmpeg_20230527-000911/dvd.mpg
380M    dvd-wide-dv01-dualpass-yadif/movies/movie_0.mpg

mediainfo dvd-wide-*/*.mpg dvd-wide-*/*/movie*.mpg | grep Scan
Scan type                                : Progressive
Scan type                                : Progressive
Scan type                                : Progressive