[Cin] Blu-ray compliant MPEG-2 SD video - 2022 mod
Andrew Randrianasulu
randrianasulu at gmail.com
Wed Dec 7 00:13:13 CET 2022
may be try field_order as recommended here
https://forum.videohelp.com/threads/396483-ffmpeg-changes-interlaced-to-progressive
?
ср, 7 дек. 2022 г., 01:53 Terje J. Hanssen via Cin <
cin at lists.cinelerra-gg.org>:
> With HDV 'in the Blu-ray box' I would like to test if it possible to use
> equivalent procedures for DV to SD-Blu-ray video.
>
> That is continue as an alternative to the 2021 thread here:
> https://lists.cinelerra-gg.org/pipermail/cin/2021-December/004268.html
>
> Blu-ray compliant MPEG-2 SD video with LPCM audio
> -------------------------------------------------
>
> 1) Encode DV to MPEG-2 video and copy PCM audio as is to a VOB/MPG format:
>
> ffmpeg -i dv28.dv -c:v mpeg2video -refs 1 -bf 2 -b:v 25M -maxrate 25M
> -minrate 25M -bufsize 45M -muxrate 45M -dc 10 -c:a pcm_s16be -f vob
> dv28_25mbps.mpg
>
> 2) tsMuxer
> As FFMpeg (then) would not allow to mux PCM or remux MPG to M2TS, I
> tested tsMuxer,
> see the attached screenshot: tsMuxer_SD_M2TS
> Input file: dv28_25mbps.mpg
> Tracs: MPEG-2 video stream and LPCM audio stream
> Output: dv28_25mbps.iso
>
> ------------------------
>
> Using Mediainfo to compare the source dv28.dv ffmpeg input file with its
> output file dv28_25mbps.mpg (intermediate) and with the resulting
> dv28_25mbps.iso, show that the interlaced dv video was changed to
> progressive VOB/BVOB dvd video.
>
> > mediainfo dv28.dv | egrep 'Format|Scan|Width|Height|Bit'
> Format : DV
> Format : DV
> Bit rate mode : Constant
> Bit rate : 24.4 Mb/s
> Width : 720 pixels
> Height : 576 pixels
> Bit depth : 8 bits
> Scan type : Interlaced
> Scan order : Bottom Field First
> Bits/(Pixel*Frame) : 2.357
> Format : PCM
> Format settings : Big / Signed
> Bit rate mode : Constant
> Bit rate : 1 536 kb/s
> Bit depth : 16 bits
>
> > mediainfo dv28_25mbps.mpg | egrep 'Format|Scan|Width|Height|Bit'
> Format : MPEG-PS
> Format : MPEG Video
> Format version : Version 2
> Format profile : Main at Main
> Format settings : BVOP
> Format settings, BVOP : Yes
> Format settings, Matrix : Default
> Format settings, GOP : M=3, N=12
> Bit rate mode : Variable
> Bit rate : 24.7 Mb/s
> Width : 720 pixels
> Height : 576 pixels
> Bit depth : 8 bits
> Scan type : Progressive
> Bits/(Pixel*Frame) : 2.384
> Format : PCM
> Format settings : Big / Signed
> Bit rate mode : Constant
> Bit rate : 1 536 kb/s
> Bit depth : 16 bits
>
> > mediainfo dv28_25mbps.iso | egrep 'Format|Scan|Width|Height|Bit'
> Format : MPEG Video
> Format version : Version 2
> Format : MPEG Video
> Format version : Version 2
> Format profile : Main at Main
> Format settings : BVOP
> Format settings, BVOP : Yes
> Format settings, Matrix : Default
> Format settings, GOP : M=3, N=12
> Bit rate mode : Variable
> Bit rate : 28.0 Mb/s
> Width : 720 pixels
> Height : 576 pixels
> Bit depth : 8 bits
> Scan type : Progressive
> Bits/(Pixel*Frame) : 2.703
>
> -----------------------------------
>
> That is, suggestion how to merge/customize the newer ffmpeg HDV to
> Blu-ray procedure
> ffmpeg -i hdv.m2t -c:v copy -c:a pcm_bluray -mpegts_m2ts_mode 1 output.mts
>
> for SD-DV to keep it interlaced and get dv28_25mbps.m2ts muxed directly?
>
> ------------------
>
> I did a first try with the following line, without taking care of
> 25mbps, but got lost the pcm audio to a privat stream (change mode?).
> Additional the vido is not kept interlaced.
>
>
> ffmpeg version 5.1.2 Copyright (c) 2000-2022 the FFmpeg developers
> built with gcc 12 (SUSE Linux)
> ..........snip
> [dv @ 0x55b59acfeb80] Estimating duration from bitrate, this may be
> inaccurate
> Input #0, dv, from 'dv28.dv':
> Metadata:
> timecode : 00:00:00:00
> Duration: 00:02:16.64, start: 0.000000, bitrate: 28800 kb/s
> Stream #0:0: Video: dvvideo, yuv420p, 720x576 [SAR 16:15 DAR 4:3],
> 25000 kb/s, 25 fps, 25 tbr, 25 tbn
> Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
> Stream mapping:
> Stream #0:0 -> #0:0 (dvvideo (native) -> mpeg2video (native))
> Stream #0:1 -> #0:1 (copy)
> Press [q] to stop, [?] for help
> Output #0, mpegts, to 'dv28-mpeg2-SD-bluray.mts':
> Metadata:
> timecode : 00:00:00:00
> encoder : Lavf59.27.100
> Stream #0:0: Video: mpeg2video (Main), yuv420p(bottom coded first
> (swapped)), 720x576 [SAR 16:15 DAR 4:3], q=2-31, 200 kb/s, 25 fps, 90k tbn
> Metadata:
> encoder : Lavc59.37.100 mpeg2video
> Side data:
> cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
> Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
> [mpegts @ 0x55b59ad3dd40] Stream 1, codec pcm_s16le, is muxed as a
> private data stream and may not be recognized upon reading.
> frame= 3416 fps=586 q=31.0 Lsize= 39336kB time=00:02:16.64
> bitrate=2358.3kbits/s speed=23.4x
> video:11070kB audio:25620kB subtitle:0kB other streams:0kB global
> headers:0kB muxing overhead: 7.211923%
> terje at localhost:/run/media/terje/Seagate_4TB_back/data/Video-test/SD_Blu-ray>
>
>
> terje at localhost:/run/media/terje/Seagate_4TB_back/data/Video-test/SD_Blu-ray>
>
> ffmpeg -i dv28-mpeg2-SD-bluray.mts 2>&1 >/dev/null | egrep "Video|Audio"
> Stream #0:0[0x1011]: Video: mpeg2video (Main) ([2][0][0][0] /
> 0x0002), yuv420p(tv, progressive), 720x576 [SAR 16:15 DAR 4:3], 25 fps,
> 25 tbr, 90k tbn
>
>
> mediainfo dv28-mpeg2-SD-bluray.mts | egrep 'Format|Scan|Width|Height|Bit'
> Format : BDAV
> Format/Info : Blu-ray Video
> Format : MPEG Video
> Format version : Version 2
> Format profile : Main at Main
> Format settings, BVOP : No
> Format settings, Matrix : Default
> Format settings, GOP : Variable
> Bit rate mode : Variable
> Bit rate : 2 257 kb/s
> Width : 720 pixels
> Height : 576 pixels
> Bit depth : 8 bits
> Scan type : Progressive
> Bits/(Pixel*Frame) : 0.218
> Format : MPEG Video /
>
>
>
>
>
>
> --
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> Cin at lists.cinelerra-gg.org
> https://lists.cinelerra-gg.org/mailman/listinfo/cin
>
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