[Cin] dvdcreate and filempeg patches

[Terje J. Hanssen]

Den 04.06.2023 21:58, skrev Andrew Randrianasulu:
>
>
> вс, 4 июн. 2023 г., 15:07 Terje J. Hanssen <terjejhanssen at gmail.com>:
>
>
>
>     Den 31.05.2023 07:24, skrev Andrew Randrianasulu via Cin:
>     > I ......
>     >
>     > ===
>     >
>     > and mpeg2enc line looked like this
>     >
>     > FileMPEG::open_file: Running
>     > /dev/shm/cinelerra/cinelerra-5.1/bin//mpeg2enc -v 0 -b 8000 -q 1
>     -a 2
>     > -F 3 -H -c -I 1 -M 4 -z b -f 8 -g 15 -G 15 -R 0 -o
>     > '/dev/shm/tmp/dvd_20230531-081921/dvd.m2v'
>     >
>     >
>
>     Is it possible to get the mpeg2enc command line to test it with a dv
>     input file directly outside Cinelerra?
>
>
> try line like this?
>
> ffmpeg -i input.dv -f yuv4mpegpipe - \
>   |mpeg2enc {flags and output file as shown }
>

Yes, this fixed the BFF issue, but still Interlaced and 4:3 format.
Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, bt470bg, bottom 
first), 720x576 [SAR 16:15 DAR 4:3], 25 fps, 25 tbr, 1200k tbn

What I want is to get and try Progressive and 16:9 wide format. By 
cropping 720x576 to 720x405, bottom 65 and top 106 (top) preserves the 
displayed timestam at bottom.


> quite amazing ffmpeg in this most basic case still works after nearly 
> 20 years, line stolen (and modified) from
>
> https://avva.livejournal.com/1188593.html
>
>
Creating DVD with typical ffmpeg decoding to raw video piped to mpeg2enc 
for encoding has been the usual way as described in the Cin-CV manual
http://cinelerra-cv.wikidot.com/cincv-manual-en:rendering-files#11

and is also included in Ruh's dvd guid sec. 3.4
https://www.qsl.net/n1gg/linux/video/linuxdvdguide.html#3

mpeg2enc is said to give some higher quality at high bitrate that ffmpeg.
The drawback is it is slow and audio and to be added and multiplexed


> For ffmpeg as I said cingg does NOT  use command line ffmpeg, so you 
> need to modify profile parameters in dvd.dvd file.
>
>
>     And preferably also a corresponding ffmpeg command line.
>
>     I had already created a .mpg video file, interlaced and bff, and
>     it was
>     no better, so I think deinterlaced (progressive) will be best.
>
>
> your call!
>
> Happy coding!
>
>
>
>
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