[Cin] Blu-ray compliant MPEG-2 SD video with LPCM audio
Terje J. Hanssen
terjejhanssen at gmail.com
Tue Nov 30 02:29:05 CET 2021
Den 30.11.2021 01:57, skrev Andrew Randrianasulu:
>
>
> On Tuesday, November 30, 2021, Terje J. Hanssen
> <terjejhanssen at gmail.com <mailto:terjejhanssen at gmail.com>> wrote:
>
>
> Den 29.11.2021 07:18, skrev Andrew Randrianasulu:
>
>
>
> On Monday, November 29, 2021, Terje J. Hanssen
> <terjejhanssen at gmail.com <mailto:terjejhanssen at gmail.com>
> <mailto:terjejhanssen at gmail.com
> <mailto:terjejhanssen at gmail.com>>> wrote:
>
>
>
> Den 29.11.2021 02:07, skrev Andrew Randrianasulu:
>
>
>
> On Monday, November 29, 2021, Terje J. Hanssen via Cin
> <cin at lists.cinelerra-gg.org
> <mailto:cin at lists.cinelerra-gg.org>
> <mailto:cin at lists.cinelerra-gg.org
> <mailto:cin at lists.cinelerra-gg.org>>
> <mailto:cin at lists.cinelerra-gg.org
> <mailto:cin at lists.cinelerra-gg.org>
> <mailto:cin at lists.cinelerra-gg.org
> <mailto:cin at 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>
>
> <https://gist.github.com/avoidik/153879c06afdcaad8d69b38bcc00abb7
> <https://gist.github.com/avoidik/153879c06afdcaad8d69b38bcc00abb7>>
>
>
> <https://gist.github.com/avoidik/153879c06afdcaad8d69b38bcc00abb7
> <https://gist.github.com/avoidik/153879c06afdcaad8d69b38bcc00abb7>
>
> <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
> <https://superuser.com/questions/907933/correct-aspect-ratio-without-re-encoding-video-file>
> <https://superuser.com/questions/907933/correct-aspect-ratio-without-re-encoding-video-file
> <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 at Level is neither required as
> discussed here:
> https://forum.videohelp.com/threads/345143-mpeg2-MP-ML-with-ffmpeg#post2153378
> <https://forum.videohelp.com/threads/345143-mpeg2-MP-ML-with-ffmpeg#post2153378>
>
> <https://forum.videohelp.com/threads/345143-mpeg2-MP-ML-with-ffmpeg#post2153378
> <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
> <https://forum.doom9.org/showthread.php?p=1811816#post1811816>
>
> <https://forum.doom9.org/showthread.php?p=1811816#post1811816
> <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....
>
> =======================================
>
> I've tried four ffmpeg tests, 1) -4) below with .m2ts and .mp4
> containers
> I used data rate 25M (comparable with the source dv 25 mbps,
> compression 5:1)
> -f m2ts not accepted as format
> would not copy lpcm audio into any new streams
> VLC playback the video files OK - without audio
>
> Comments and new suggestions welcome ;)
>
>
>
> so yeah, it seems '-f mpegts' is way to go. does sound appear if you
> replace
> -c:a pcm_s16be with pcm_s16le?
Still no audio, the same private stream message. Tried also just -c:a copy.
Mediainfo below add for mpg and mp4 add
Format : DTS
Format/Info : Digital Theater Systems
du -sh dv28*
470M dv28.dv
452M dv28.m2ts
443M dv28.mts
443M dv28.mkv
443M dv28.mp4
443M dv28.mpg
mediainfo dv28.dv | grep Format
Format : DV
Format : DV
Format : PCM
Format settings : Big / Signed
mediainfo dv28.m2ts | grep Format
Format : BDAV
Format/Info : Blu-ray Video
Format : MPEG Video
Format version : Version 2
Format profile : Main at High 1440
Format settings : BVOP
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=3, N=12
mediainfo dv28.mkv | grep Format
Format : MPEG-TS
Format : MPEG Video
Format version : Version 2
Format profile : Main at High 1440
Format settings : BVOP
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=3, N=12
mediainfo dv28.mts | grep Format
Format : MPEG-TS
Format : MPEG Video
Format version : Version 2
Format profile : Main at High 1440
Format settings : BVOP
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=3, N=12
mediainfo dv28.mp4 | grep Format
Format : MPEG-TS
Format : MPEG Video
Format version : Version 2
Format profile : Main at High 1440
Format settings : BVOP
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=3, N=12
Format : DTS
Format/Info : Digital Theater Systems
mediainfo dv28.mpg | grep Format
Format : MPEG-TS
Format : MPEG Video
Format version : Version 2
Format profile : Main at High 1440
Format settings : BVOP
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : M=3, N=12
Format : DTS
Format/Info : Digital Theater Systems
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