[Cin] Report guessed / detected SAR/DAR values

Terje J. Hanssen terjejhanssen at gmail.com
Mon Jan 8 21:50:44 CET 2024

Den 08.01.2024 20:54, skrev Andrea paz:
> I created a bd.m2ts file by putting "HDV 1080i/25" as the preset.

I think there possibly is a fault in the "HDV 1080i/25" preset (mixed 
with the (FHD) "1080i/25 preset" as mentioned in another post today:

> Bd-render worked until the renderig was complete then CinGG shut down
> (I don't have a BD-burner). Doing ffprobe on this video I get:
> Input #0, mpegts, from 'bd.m2ts':
>    Duration: 00:01:06.91, start: 0.074667, bitrate: 10242 kb/s
>    Program 1
>    Stream #0:0[0x1011]: Video: h264 (High) ([27][0][0][0] / 0x001B),
> yuv420p(tv, bt709, top first), 1440x1080 [SAR 1:1 DAR 4:3], 25 fps, 25
> tbr, 90k tbn
>    Stream #0:1[0x1100](ita): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
> stereo, fltp, 192 kb/s
> The video is slightly stretched and reduced to 4:3 from the original
> 16:9. By applying the downsample filter and setting H and V to 40 the
> pixels become clearly visible and can be seen to be square.(cfr
> http://www.g-raffa.eu/Cinelerra/HOWTO/anamorphic.html)
> In postimage, I have uploaded several screenshots showing the
> "info--details" of the three original sources that make up the video,
> of the bd.m2ts (hdv.jpeg) file, and also of how the "set format" is
> automatically set.
> [@Andrew, is it possible to put PAR and DAR in the Set Format window
> as shown in the image?]
> Note: If I force, in Set Format, the aspect ratio (DAR) to 16:9 I get,
> with the downsample filter, rectangular pixels. But the video is no
> longer deformed....
Yes, I am also curious, because I tried to set the parameters manually 
and then rendered to webm, but still 4:3 format on stored file icon and 
displayed in VLC. I got a feeling that manual changing W Rate to 1.3333 
didn't really work and was changed back to 1.000. Can really Canvas 
Width/Height, W Rate/H Rate and Aspect Ratio in Set> Format be user 
defined independently?
> The patch seems to work, as "guessed SAR/DAR" and "detected SAR/DAR"
> appear, but only in source1. In source2 (which is a 4k) there are
> neither, and in source3 and hdv.jpeg there is only "guessed SAR/DAR".
> The other 3 patches also seem to work since rendering bd.m2ts worked.
> https://postimg.cc/kDNqfpT0
> https://postimg.cc/SJyq5f5J
> https://postimg.cc/VdD1cbQ4
> https://postimg.cc/ctWZdRLk
> https://postimg.cc/tnzbJs1q

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