[Cin] Testing HDV on a Blu-ray Disc Without Re-encoding

[Andrew Randrianasulu]

On Wednesday, November 24, 2021, Terje J. Hanssen <terjejhanssen at gmail.com>
wrote:

> Finally preparing the source HDV.M2T MPEG-2 media in a blu-ray M2TS format
> format with E-AC3 audio.
>
>
> ffmpeg -i 20081103140154.m2t -c:a eac3 -c:v copy
> 20081103140154_m2t-eac3.m2ts
>
> ffmpeg -i 20081103140154_m2t-eac3.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: eac3 (EAC3 / 0x33434145), 48000 Hz, stereo,
> fltp, 192 kb/s
>
> ===============
>
> Trying to follow the manual's 7 procedure steps to create the Blu-ray
> structure and burn it to a DVD+RW disc (with root access):
> # My comments and questions included.
>
>
> 1. du -sb /yourHDVfile.MTS
>
> cd /video/HDV-M2T
>
> du -sb 20081103140154_m2t-eac3.m2ts
> 44261376    20081103140154_m2t-eac3.m2ts
>
> ----------
>
> 2. blocks=((size-in-bytes/2048 + 4096))
>
> blocks=((44261376/2042 + 4096)) = 25700
>
> ----------
>
> 3. mkudffs /tmp/newfilename.udfs blocks
>
> zypper in udftools
>
> mkudffs /tmp/BD_HDV_20081103140154_m2t-eac3_m2ts.udfs 25700
>
> filename=/tmp/BD_HDV_20081103140154_m2t-eac3_m2ts.udfs
> label=LinuxUDF
> uuid=619e6f69a6e71b03
> blocksize=2048
> blocks=25700
> udfrev=201
> start=0, blocks=16, type=RESERVED
> start=16, blocks=3, type=VRS
> start=19, blocks=237, type=USPACE
> start=256, blocks=1, type=ANCHOR
> start=257, blocks=16, type=PVDS
> start=273, blocks=1, type=LVID
> start=274, blocks=25169, type=PSPACE
> start=25443, blocks=1, type=ANCHOR
> start=25444, blocks=239, type=USPACE
> start=25683, blocks=16, type=RVDS
> start=25699, blocks=1, type=ANCHOR
>
> -------------
>
> 4. mount -o loop /tmp/newfilename.udfs /mntX
>
> mkdir /mntX
>
> mount -o loop /tmp/BD_HDV_20081103140154_m2t-eac3_m2ts.udfs /mntX
>
> -----------
>
> 5. /<cinelerra_installed_path>/bin/bdwrite /mntX /tmp/yourHDVfile.MTS
>
> which bdwrite
> /usr/bin/bdwrite
>
> bdwrite /mntX /tmp/20081103140154_m2t-eac3.m2ts
> cant scan media: /tmp/20081103140154_m2t-eac3.m2ts
>
> # Something wrong here with the procedure or my command syntax? "
> # I'm confused regarding "/mntX /tmp/yourHDVfile.MTS": my HDV.M2TS file is
> in the current /video/HDV-M2T ?


yeah, sounds like unclear manual assuming your video file also in /tmp, try
same steps but with next line you tried first (or delete already written
stuff from /mntX before next try)

>
> bdwrite /mntX 20081103140154_m2t-eac3.m2ts
> /mntX/BDMV: File exists
>
> # Obviously a file is already (mounted) - from which procedure step?


from 4...?

>
> ls /mntX/BDMV
> AUXDATA  BACKUP  BDJO  CLIPINF  JAR  META  PLAYLIST  STREAM
>
> tree -h /mntX/BDMV
> /mntX/BDMV
> ├── [  40]  AUXDATA
> ├── [ 224]  BACKUP
> │   ├── [  40]  BDJO
> │   ├── [  40]  CLIPINF
> │   ├── [  40]  JAR
> │   └── [  40]  PLAYLIST
> ├── [  40]  BDJO
> ├── [  40]  CLIPINF
> ├── [  40]  JAR
> ├── [  40]  META
> ├── [  40]  PLAYLIST
> └── [  40]  STREAM
>
> # Only the Blu-ray structure created so far, no video content yet copied
> into the STREAM directory?


seem so...

>
>
> ----------
>
> 6. umount /mntX
>
> umount /mntX
>
> ------------
>
> 7. dd if=/tmp/newfilename.udfs of=/dev/bd bs=2048000
>
> # I use a rewritable DVD+RW disc in the Blu-ray burner for this small
> testfile (43.23 MB)
>
>
> lsscsi | grep HL-DT
> [5:0:0:0]    cd/dvd  HL-DT-ST BD-RE  BH10LS30  1.02  /dev/sr0
>
> dd if=/tmp/BD_HDV_20081103140154_m2t-eac3_m2ts.udfs of=/dev/sr0 bs=2048000
> 25+1 records in
> 25+1 records out
> 52633600 bytes (53 MB, 50 MiB) copied, 0.0548402 s, 960 MB/s
>
> --------
>
> 8.# I'm in doubt if the HDV.m2ts file really was written to the disc or
> only the space allocated?
>
> cd /run/media/terje/LinuxUDF
>
> tree -h .
> .
> ├── [ 412]  BDMV
> │   ├── [  40]  AUXDATA
> │   ├── [ 224]  BACKUP
> │   │   ├── [  40]  BDJO
> │   │   ├── [  40]  CLIPINF
> │   │   ├── [  40]  JAR
> │   │   └── [  40]  PLAYLIST
> │   ├── [  40]  BDJO
> │   ├── [  40]  CLIPINF
> │   ├── [  40]  JAR
> │   ├── [  40]  META
> │   ├── [  40]  PLAYLIST
> │   └── [  40]  STREAM
> └── [ 272]  CERTIFICATE
>     ├── [ 224]  BACKUP
>     │   ├── [  40]  BDJO
>     │   ├── [  40]  CLIPINF
>     │   ├── [  40]  JAR
>     │   └── [  40]  PLAYLIST
>     ├── [  40]  BDJO
>     ├── [  40]  CLIPINF
>     ├── [  40]  JAR
>     └── [  40]  PLAYLIST
>
> 23 directories, 0 files
> localhost:/run/media/terje/LinuxUDF # cd
>
> # That is the STREAM directory is empty, no 43.3 M HDV.m2ts video file
> copied into it?
>
> =======================
>
> Terje J. H
>

Thanks A LOT for trying those procedures to the letter (how they supposed
to be tried, at least initially!), it seems you found at least one bug!

pleas let us know if pointing bdwrite at correct video file makes fully
populated bd structure
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