Den 30.11.2021 01:57, skrev Andrew Randrianasulu:
On Tuesday, November 30, 2021, Terje J. Hanssen
<[email protected] <mailto:[email protected]>> wrote:
Den 29.11.2021 07:18, skrev Andrew Randrianasulu:
On Monday, November 29, 2021, Terje J. Hanssen
<[email protected] <mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>> wrote:
Den 29.11.2021 02:07, skrev Andrew Randrianasulu:
On Monday, November 29, 2021, Terje J. Hanssen via Cin
<[email protected]
<mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>
<mailto:[email protected]
<mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>>> 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@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@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@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@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@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@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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