On Monday, November 29, 2021, Terje J. Hanssen <terjejhans...@gmail.com> wrote:
> > > Den 29.11.2021 02:07, skrev Andrew Randrianasulu: > >> >> >> On Monday, November 29, 2021, Terje J. Hanssen via Cin < >> cin@lists.cinelerra-gg.org <mailto:cin@lists.cinelerra-gg.org>> wrote: >> >> 2) SD ProRes.mov, 422 (HQ) 10-bit video with LPCM stereo audio :) >> >> >> Den 28.11.2021 22:48, skrev Terje J. Hanssen: >> >> The source video files I want to convert to Blu-ray compliant >> MPEG-2 SD video with LPCM audio are: >> 1) DV25.dv, 720 x 576 (PAL), 50i 4:2:0 video with LPCM stereo >> audio >> and >> 2) SD ProRes.mov, 422 (HQ) 19-bit video with LPCM stereo audio >> >> The purpose is to get better MPEG-2 quality using higher >> (highest) possible bitrate than for DVD video. >> (Yes, I have tested h.264 via Cin-GG) >> >> >> Here a sample ffmpeg command script found for HD video with >> PCM (Blu-ray not mentioned): >> https://gist.github.com/avoidik/153879c06afdcaad8d69b38bcc00abb7 >> <https://gist.github.com/avoidik/153879c06afdcaad8d69b38bcc00abb7 >> > >> # with PCM 16-bit audio (uncompressed), constant video bitrate >> with specific bitrate tolerance >> >> ffmpeg -i "input.mp4" \ >> -c:v mpeg2video -pix_fmt yuv422p -refs 1 -bf 2 -b:v 50M >> -maxrate 50M -minrate 50M \ >> -s 1920x1080 -aspect 16:9 \ >> -c:a pcm_s16be -f vob \ >> "output.mpg" >> >> >> > Andrew, > > Thank you for your review and suggestions. I'll put the pieces together > tomorrow and start testing with em... > > >> for SD files replace '-s 1920x1080' with '-s 720x576' or omit this part >> {better} . >> > > Not sure how to treate 720x576 (4:3) with regards to displaying on a 16:9 > Widescreen (HDTV), possibly crop the frames next to > SD Wide (16:9) "These resolutions are stored anamorphically, i.e. they are > stretched to the display aspect ratio by the player or display." > > https://superuser.com/questions/907933/correct-aspect-ratio-without-re-encoding-video-file === for MPEG-2, -aspect is useless; you need to use -bsf:v mpeg2_metadata=display_aspect_ratio=4/3 (the only valid values are 4/3, 16/9, 221/100). Even this might not work {...} ==== try to experiment.. > >> '-b:v 40M -maxrate 40M -minrate 40M'. for 40 mbit/s fixed bitrate. for >> smaller bitrate just replace numbers. >> >> -f m2ts for mpeg2 transport stream. >> >> most likely remove -pix_fmt part. >> >> -i your file (ffmpeg hopefully will detect its type and codecs >> automatically) >> > > > So any Mpeg2 Profile@Level is neither required as discussed here: > https://forum.videohelp.com/threads/345143-mpeg2-MP-ML-with- > ffmpeg#post2153378 > > > >> keep -c:v mpeg2video part >> >> I do not think you need mp4box for further conversion, as name suggest it >> mostly deals {at output end} with mp4 format, not mpeg2 transport stream >> (but you mentioned putting pcm in mp4, so I researched this part too) >> > > PCM and ffmpeg was also discussed here > https://forum.doom9.org/showthread.php?p=1811816#post1811816 > > >> try tsmuxer (gui) next (not sure if Appimage works for you, if not try >> their linux build from their github - tags - assets (there you need to >> expand 'assets' arrow/triangle to see various binary and source archives). >> >> >> > Yep, tsMuxer still launches fine from my Appimage installation. I'll have > a look at it later.... > > >> >> Suggestion to FFMpeg command to convert the actual SD video >> files Blu-ray compat? >> And if LPCM has to be muxed via MP4(Box) first, a guideline >> is welcome? >> >> ------------------ >> Some Blu-ray technical info and specifications: >> Video codec MPEG2 - MP@ML (4:3 or 16:9), MP@HL (16:9) >> Video frame size 720×576 25 frames interlaced / 50 fields >> (4:3/16:9) >> Max video bitrate 40 Mbit/s >> **BD-R/RE AV SESF, Part 3 (2018): >> Video Streams: max. 15 Mbps VBR (MP@ML) and 24 Mbps (MP@HL) >> Audio codecs LPCM 1.536 Mbps (16 bit, 2 ch), 2.304 Mbps (20, >> 24 bit) >> ----------------------- >> >> Terje J. H >> >> >> >> >> -- Cin mailing list >> Cin@lists.cinelerra-gg.org <mailto:Cin@lists.cinelerra-gg.org> >> https://lists.cinelerra-gg.org/mailman/listinfo/cin >> <https://lists.cinelerra-gg.org/mailman/listinfo/cin> >> >> >
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