Den 20.05.2025 14:16, skrev Richard Bartczak via ffmpeg-user:
Hello,
video recorded for 4/3 :
Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
yuv420p(tv, bt470bg, top first), *720x576 [SAR 16:15 DAR 4:3]*, 25
fps, 25 tbr, 90k tbn
(container ts).
What I want to have is something like that :
Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
yuv420p(tv, top first), *720x576 [SAR 64:45 DAR 16:9]*, 25 fps, 25
tbr, 90k tbn
Did some tries with -vf scale=720:576,setsar=64:45,setdar=16:9 or
something like that. But the result neither have the expected size nor
the video quality will be acceptable.
To resize the video via TV-settings will be possible, I hope the
transformation will also be possible without reencoding.
Any idea what to do ?
I'm not quite sure what you really want to do. But it seems to me that
your recorded input is a PAL SD 4:3 video format that you want to
transform to a SD Wide anamorphic wide video format to display without
black borders on a 16:9 wide screen (possibly in a "DVD Wide compliant"
mpeg2 format?)
If so, it seems to me you'll need to crop top and bottom borders from
your input format to get a 16:9 aspect frame, that is 720x405 px.
There are several posts and references about cropping to look at.
But first I'll suggest to take a look at these illustrative figures to
clarify your actual case:
Widescreen with SD video
https://www.sandelinmedia.com/widescreen/
We also discussed a similar topic on the Cinelerra-GG mailing list
Missing preset for SD 16:9 Anamorphic Wide DV(D)
https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg02081.html
Terje J. Hanssen
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