Den 24.11.2024 23:30, skrev Andrew Randrianasulu:


пн, 25 нояб. 2024 г., 01:11 Terje J. Hanssen <terjejhanssen@gmail.com>:



Den 24.11.2024 22:22, skrev Andrew Randrianasulu:


вс, 24 нояб. 2024 г., 19:45 Terje J. Hanssen <terjejhanssen@gmail.com>:

I can't notice differences at playback with VLC and FFplay (other than 16:9 vs 4:3 format as usual). And both visually with good qualities in my eyes.

Cingg Set Format Interlace Mode: Not interlaced
did the trick and both hdv and hd could be rendered
FFprobe reported it is pgogressiv, while native FFmpeg transcoding still say interlaced.


But do files rendered by cingg set to progressive and ffmpeg from same tff source differ visually?

No. It is easy to see during VLC  playback that neither av1_qsv from Cin/ffmpeg is progressive, but rather interlaced:
Pause during horizontal movements (camcorder panning) shows interlaced vertical edges. Then shortcut "D" on this still image swithch it to deinterlaced and smoother edges. This is on a computer LCD monitor.

I rendered also with global_quality=25 (switched on in Cingg preset), which then gives higher bitrate and quality comparable with the output from the native ffmpeg 7.1.


Hm. Then I guess I have no other way but to disable autoadding this flag especially for qsv(av1/h264/vp9).

You can try to make other qsv profiles with "format set to progressive hack" in the meantime. (there should also be mjpeg and mpeg2 encoders - not most useful but it will be interesting to know if they share same chocke-on-ildct behavior with av1/h264/vp9.)


I have  not found other interlaced test files, and I think 1080i hdv as already tested are the main source for interlaced mpeg2.
The other mpeg2 video files I have prepared for dvd via ffmpeg and dvde, are all progressive.

From the url below I have tested a few mjpeg clips. Mediainfo doesn't report  any scan type about them, so I think they are not field interlaced but frame based, as they also render ok with av1_qsv. Else they seems to be faulty possibly with regards to timing, as the playback speed seemingly is all too fast
https://filesamples.com/formats/mjpeg?utm_content=cmp-true