Den 22.11.2022 18:55, skrev Andrew Randrianasulu:

so according to link below it was possible in 2010  or so. thing is apparently new versions remove this feature because you know, 'progress'!

https://www.vegascreativesoftware.info/us/forum/hdv-to-blu-ray-why-is-it-rec...

I think technically it completely possible, just need some coding thinking.

Yes, I have also noticed that forum thread. (And not to confuse with, I read in another forum somewhere that Playstations could use "homemade" BDAV disc format, but later certainly only BDMV discs)

Terje, can you check if 'native mpeg' decoder still works for HDV specifically? (toggle Use FFmpeg first icon/button in main window and then load your file(s) )

Yes, Cin-GG via FFmeg first loads and playback my HDV-1080i50,m2t files, and also the same files with audio transcoded to ac3 or pcm_bluray. Playback of pcm_bluray audio has noticeable lower volume in CinGG while it louds normal in VLC. l

I think it was working in cinelerra 2.x times because people edited HDV back then and ffmpeg was little decoding library inside libquicktime folder for some mov/avi decoding ....

may be developing mpeg2 video elementary stream direct copy will be a bit less of Task compared to more generic case? At least libmpeg3 already know how to create index file, so info about  keyframes and GOPs all should be there ...'only' problem  I never dived that deep into real inner workings of encoder (some forum post suggest you need to edit at *field* boundary, not frame boundary, and this complicates things a bit), and one bit set wrong there obviously can make file unplayable :(