Den 09.01.2024 23:05, skrev Andrew Randrianasulu:

вт, 9 янв. 2024 г., 23:49 Terje J. Hanssen <terjejhanssen@gmail.com>:

................

As seen above, FFmpeg 6.0.1 has a "cleaner output" without the dual set
of [ SAR DAR ] in brackets as from FFmpeg 4.4.4 on Leap
https://lists.cinelerra-gg.org/pipermail/cin/2024-January/007654.html

well, may be it was container/codec differentiation? I think for troubleshooting issues we better to report both values in our "asset - info - details" ...

I don't know if the AppImages cin_svt_aspect-ratio (Andrea) and cin-x86_64 (Phyllis) are quite identical or of same patch-levels.
But for both AppImages I used the same DV and HDV source files, svt-av1 and opus webm rendering, without any Set>Format input from my side.

As I have installed TW-SR/cin_svt_aspect-ratio/FFmpeg6 and LP15/cin-x86_64/FFmpeg4 in dualboot on the same workstation, I have cross-tested both set of outputs.
In the comparison tables below, the file names suffixed _tw.webm are rendered on Tumbleweed_Slowroll, FF6 is ffprobe output on ditto Tw-Sr, while, FF4 are ditto on LP15.

cin_svt_aspect-ratio rendering on tw-sr
---------------------------------------
FF6
ffprobe -hide_banner dv01_07_cingg_svt-av1+opus_tw.webm
Stream #0:0: Video: av1 (Main), yuv420p(pc, bt709/unknown/unknown), 720x576, SAR 16:15 DAR 4:3, 25 fps, 25 tbr, 1k tbn
FF4
ffprobe -hide_banner dv01_07_cingg_svt-av1+opus_tw.webm
Stream #0:0: Video: av1 (Main), yuv420p(pc, bt709/unknown/unknown), 720x576 [SAR 1:1 DAR 5:4], SAR 16:15 DAR 4:3, 25 fps, 25 tbr, 1k tbn, 1k tbc

FF6
ffprobe -hide_banner hdv07_05_cingg_svt-av1+opus_tw.webm
Stream #0:0: Video: av1 (Main), yuv420p(pc, bt709/unknown/unknown), 1440x1080, SAR 4:3 DAR 16:9, 25 fps, 25 tbr, 1k tbn
FF4
ffprobe -hide_banner hdv07_05_cingg_svt-av1+opus_tw.webm
Stream #0:0: Video: av1 (Main), yuv420p(pc, bt709/unknown/unknown), 1440x1080 [SAR 1:1 DAR 4:3], SAR 4:3 DAR 16:9, 25 fps, 25 tbr, 1k tbn, 1k tbc

cin-x86_64 rendering on lp15
----------------------------
FF6
fprobe -hide_banner dv01_07_cingg_svt-av1+opus.webm
Stream #0:0: Video: av1 (Main), yuv420p(tv, bt709/unknown/unknown), 720x576, SAR 16:15 DAR 4:3, 25 fps, 25 tbr, 1k tbn
FF4
ffprobe -hide_banner dv01_07_cingg_svt-av1+opus.webm
Stream #0:0: Video: av1 (Main), yuv420p(tv, bt709/unknown/unknown), 720x576 [SAR 1:1 DAR 5:4], SAR 16:15 DAR 4:3, 25 fps, 25 tbr, 1k tbn, 1k tbc

FF6
ffprobe -hide_banner hdv07_05_cingg_svt-av1+opus.webm
Stream #0:0: Video: av1 (Main), yuv420p(tv, bt709/unknown/unknown), 1440x1080, SAR 4:3 DAR 16:9, 25 fps, 25 tbr, 1k tbn
FF4
ffprobe -hide_banner hdv07_05_cingg_svt-av1+opus.webm
Stream #0:0: Video: av1 (Main), yuv420p(tv, bt709/unknown/unknown), 1440x1080 [SAR 1:1 DAR 4:3], SAR 4:3 DAR 16:9, 25 fps, 25 tbr, 1k tbn, 1k tbc

Can you try few more clips of different nature just to see if it works in more cases? :)

I will report differences if discovered