[Cin] Testing HDV on a Blu-ray Disc Without Re-encoding
Andrew Randrianasulu
randrianasulu at gmail.com
Wed Nov 24 03:35:16 CET 2021
On Wednesday, November 24, 2021, Terje J. Hanssen via Cin <
cin at lists.cinelerra-gg.org> wrote:
> I pick up again and continue another thread on this topic started a year
> ago:
> https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg02145.html
>
>
> In this post I start carefully with three questions regarding manual
> definitions and procedure in this section:
> https://cinelerra-gg.org/download/CinelerraGG_Manual/HDV_on_
> Blu_ray_Disc_Without.html
>
> An MTS file is a video file saved in the high-definition (HD) MPEG
>> Transport Stream video format, commonly called AVCHD. It contains HD video
>> compatible with Blu-ray disc format and is based on the MPEG-2 transport
>> stream. MTS files are often used by Sony, Panasonic, Canon and other HD
>> camcorders.
>>
>
> ==========
>
> Q1. My HDV 1080i video file transfered from tape to HDD via Firewire, get
> a file extension M2T, which then is recognized as format MPEG-TS by
> Mediainfo.
> AFAIK the next generation camcorders after HDV used H.264/AVC (AVCHD)?
i think yes...
> =========
>
> Legal input for
>> Video – MPEG1VIDEO, MPEG2VIDEO, H264;
>> Audio – MP1, MP2, AC3, AC3PLUS, DTS, TRUHD.
>>
>
>
> To verify this with FFMpeg for the previous HDV test-file
> "20081103140154.m2t" available on internet:
>
> ffmpeg -i 20081103140154.m2t 2>&1 >/dev/null | egrep "Audio|Video"
>
> Stream #0:0[0x810]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
> yuv420p(tv, bt709, top first), 1440x1080 [SAR 4:3 DAR 16:9], 25000 kb/s, 25
> fps, 25 tbr, 90k tbn, 50 tbc
> Stream #0:1[0x814]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
> stereo, fltp, 384 kb/s
>
>
> According to the manual, both the HDV MPEG2Video stream and MP2 audio
> stream should be legal input to create a Blu-ray disc.
>
> However, MP2 isn't on Sony's list or other I have seen over audio and
> video codecs supported on Blu-ray Disc media.
> https://www.sony.com/electronics/support/articles/00029663
>
>
> Q2. Can someone clarify if MP2 rather should be transcoded to i.e AC3
> instead, possibly also remux to BDAV/M2TS if required (below)?
> (On my first attempt with "MTS" format, Mediainfo reported this
> FileExtension_Invalid: ts m2t m2s m4t m4s tmf ts tp trp ty)
from
http://blu-raydisc.com/assets/Downloadablefile/BD-ROM-AV-WhitePaper_110712.pdf
p. 19
it seems mp2 is not allowed on Bd-rom disks (and ffmpeg's muxer had or even
today have problems with muxing lpcm into bd-compatible m2ts?)
so yeah, transcoding seems to be only way, manual need correction.
I think while mp2 allowed in generic transport stream it is not allowed on
bluray especially (at least by standart)
>
> =========
>
> Q3. I also wonder if the manual command procedure creates a BDAV or a BDM
> structure, and optional if a DVD-RW disc can be used to create and playback
> this "Blu-ray disc" using a Blu-ray burner and a standalone UHD-Blu-ray
> player device? (At the time I have no free BD-R/RE discs left)
I tried to find anyone with player for doing experiment like this - no
luck!
of course you are encouraged to try, just lower bitrate to 8-9 mbit/s total
>
> =========
>
>
> Transcode to AC3 and remux to M2TS with FFMpeg if required:
>
> ffmpeg -i 20081103140154.m2t -acodec ac3 -vcodec copy 20081103140154.m2ts
>
>
> ffmpeg -i 20081103140154_m2t-ac3.m2ts 2>&1 >/dev/null | egrep "Audio|Video"
> .........
> Stream #0:0[0x1011]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
> yuv420p(tv, bt709, top first), 1440x1080 [SAR 4:3 DAR 16:9], 25000 kb/s, 25
> fps, 25 tbr, 90k tbn, 50 tbc
> Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo,
> fltp, 192 kb/s
>
>
> mediainfo 20081103140154_m2t-ac3.m2ts
> ..........
> General
> ID : 1 (0x1)
> Complete name : 20081103140154_m2t-ac3.m2ts
> Format : BDAV
> Format/Info : Blu-ray Video
> File size : 42.2 MiB
> Duration : 13 s 360 ms
> Overall bit rate mode : Variable
> Overall bit rate : 26.4 Mb/s
>
> Video
> ID : 4113 (0x1011)
> Menu ID : 1 (0x1)
> Format : MPEG Video
> Commercial name : HDV 1080i
> Format version : Version 2
> Format profile : Main at High 1440
> Format settings : CustomMatrix / BVOP
> Format settings, BVOP : Yes
> Format settings, Matrix : Custom
> Format settings, GOP : M=3, N=12
> Format settings, picture structure : Frame
> Codec ID : 2
> Duration : 13 s 440 ms
> Bit rate mode : Constant
> Bit rate : 25.0 Mb/s
> Width : 1 440 pixels
> Height : 1 080 pixels
> Display aspect ratio : 16:9
> Frame rate : 25.000 FPS
> Standard : Component
> Color space : YUV
> Chroma subsampling : 4:2:0
> Bit depth : 8 bits
> Scan type : Interlaced
> Scan order : Top Field First
> Compression mode : Lossy
> Bits/(Pixel*Frame) : 0.643
> Stream size : 40.3 MiB (95%)
> Color primaries : BT.709
> Transfer characteristics : BT.709
> Matrix coefficients : BT.709
>
> Audio
> ID : 4352 (0x1100)
> Menu ID : 1 (0x1)
> Format : AC-3
> Format/Info : Audio Coding 3
> Commercial name : Dolby Digital
> Codec ID : 129
> Duration : 13 s 440 ms
> Bit rate mode : Constant
> Bit rate : 192 kb/s
> Channel(s) : 2 channels
> Channel layout : L R
> Sampling rate : 48.0 kHz
> Frame rate : 31.250 FPS (1536 SPF)
> Compression mode : Lossy
> Delay relative to video : -5 ms
> Stream size : 315 KiB (1%)
> Service kind : Complete Main
>
> Menu
> ID : 256 (0x100)
> Menu ID : 1 (0x1)
> Duration : 13 s 360 ms
> List : 4113 (0x1011) (MPEG Video) /
> 4352 (0x1100) (AC-3)
> Service name : Service01
> Service provider : FFmpeg
> Service type : digital television
>
> =============
>
> Terje J. H
> --
> Cin mailing list
> Cin at lists.cinelerra-gg.org
> https://lists.cinelerra-gg.org/mailman/listinfo/cin
>
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