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#1 2004-02-09 05:27:23
- tgh
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- Registered: 2004-02-03
- Posts: 129
PAR2 and authoring DVDs
FYI, it seems that when authoring a DVD, it's permissable to put PAR2 files in the VIDEO_TS folder. So my authoring process is now:
1) Create the DVD folder structure using TMPGEnc DVD Author
2) Use QuickPar and create PAR2 files for the files in the VIDEO_TS folder to fill out the rest of the space on the recordable DVD (my AUDIO_TS folder is always empty so far), using a block size of 4Mb or 8Mb.
3) Pack the folder structure into an ISO using ImgTool Classic
4) Burn the DVD in Roxio 6 (Create disc from ISO file)
Then, if my recordable DVD gets too badly scratched, I can use ISOBuster, recover the files in the VIDEO_TS folder, rebuild the directory structure, recreate the ISO using ImgTool and re-burn to a new disc.
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#2 2004-02-09 23:53:39
- paulus
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- Registered: 2004-01-11
- Posts: 471
Re: PAR2 and authoring DVDs
hi tgh that sounds good.
i dont suppose you could post a few links to those s/w sites at all?
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#3 2004-02-09 23:57:29
- paulus
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- Registered: 2004-01-11
- Posts: 471
Re: PAR2 and authoring DVDs
ahh i found one... but not for win98 <!-- s
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#4 2004-10-30 11:27:11
- 96civic
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- Registered: 2004-10-30
- Posts: 2
Re: PAR2 and authoring DVDs
hi anyone know how to burn vcd to dvd thankzzzzzzzzzzzz
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#5 2004-10-30 12:43:23
- paulus
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- Registered: 2004-01-11
- Posts: 471
Re: PAR2 and authoring DVDs
Hi Try one of the packages by nero.
Nero Vision express might be able to help.
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#6 2004-10-30 18:39:40
- abbadon
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- Registered: 2004-10-23
- Posts: 11
Re: PAR2 and authoring DVDs
This is getting quite off topic. There are many other forums, like doom9.org and dvdrhelp.com that go over in detail.
To simply answer you question, a truely VCD compiant file is also DVD compiant, and can be simple dragged and dropped in a program recognizing this (e.g. TMPGENC DVD Author)
Back to the original comment. I too have found this method useful. I will often leave out the ifo and buf files as they redundant and thow off the size of the efficiency of the par2 set.
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#7 2004-11-03 15:42:55
- tgh
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- Registered: 2004-02-03
- Posts: 129
Re: PAR2 and authoring DVDs
I now use a block size of 1MB or 1.5MB, so the BUF files really don't throw efficiency off by much. I also put a "zz" on the front of the PAR2 fileset name to force it to the end of the directory listing.
I think you need *either* the IFO or BUF files (BUF files are copies of the IFO files... IIRC).
No problems so far, and I've authored over 200 DVDs with PAR2 data.
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#8 2004-11-09 16:29:31
- brett
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- From: Columbus OH
- Registered: 2004-03-10
- Posts: 4
Re: PAR2 and authoring DVDs
"tgh":sgk8jsuh wrote:
FYI, it seems that when authoring a DVD, it's permissable to put PAR2 files in the VIDEO_TS folder. ...[/quote:sgk8jsuh]
I just wanted to warn you guys that you are NOT supposed to put any extra files in the VIDEO_TS folder. I'm sure it will play fine on most things, but it will not be an officially compliant DVD video.
If you want to add files to a DVD video you can make another directory on the disc, or you can even dump files into the root directory of the disc, but you're really not supposed to touch the VIDEO_TS and AUDIO_TS folders. These directories are not burned like regular files on a DVD-ROM.
The safest solution would be to just make a separate PAR2 directory.
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#9 2004-11-09 17:56:11
- PeterBClements
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- Registered: 2004-01-05
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Re: PAR2 and authoring DVDs
"brett":zinbkqi7 wrote:
...but you're really not supposed to touch the VIDEO_TS and AUDIO_TS folders. These directories are not burned like regular files on a DVD-ROM.[/quote:zinbkqi7]
What is the difference between the way files in those folders are burned compared with files in other folders?
I know that for CDs there is a capacity difference between what you can burn for a CD-ROM and a VCD/SVCD due to the extra error correction added for CD-ROMs.
Do they do something similar for the VIDEO_TS and AUDIO_TS folders on DVDs? i.e. files in other folders have extra error correction.
If so, then obviously you don't need the extra error correction for the PAR2 files as that just reduces the number of recovery blocks you can fit in any unused space on the DVD.
The possibility that some DVD players might not play the DVD correctly if there are PAR2 files in those folders is a little more serious.
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#10 2004-11-09 18:39:33
- tgh
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Re: PAR2 and authoring DVDs
DVD discs are just UDF 1.5 file system. Nothing special, uses the same error correction as regular data DVDs. About the only extra error correction that you can add is during the encoding process when you create the MPEG2 files (ECC embedded in the MPEG2 stream, but it gets stored as a regular file on the disc).
It's always possible that some DVD players will get confused about the extra files in the VIDEO_TS folder. So far I haven't found any players in my limited testing that do so, but the usual caveats apply.
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Once Peter adds sub-folder (and relative folder addressing) support to QuickPar, it will be pretty simple to move the PAR files to a seperate folder and create them there. (That's the big reason that I leave mine in the VIDEO_TS folder, makes it much easier to verify the disc at a later date.)
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#11 2006-01-18 03:28:44
- tgh
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- Registered: 2004-02-03
- Posts: 129
Re: PAR2 and authoring DVDs
I've re-read the specs again (and some other sources). Most of what I said earlier still applies, that the DVD is simply a UDF 1.5 file system.
However, the VOB/IFO/BUP files are required to be placed onto the disc in a specific physical order.
DVD-Video physical layout:
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--------------------------
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In order to make a valid DVD-Video image the files in the image has to ordered in a specific physical order. It's important the the first file on the disk is the VIDEO_TS.IFO file. The DVD player will seek the VIDEO_TS.IFO and from it get the information on which sectors the other files start and end
The physical layout must follow the roules in the VIDEO_TS.IFO, and the VTS_XX_0.IFO files. E.g if the VIDEO_TS.IFO specifies that VTS_01_0.IFO starts at sector 345 (offset from VIDEO_TS.IFO) it must do so. There are similar "rules" in all the IFO files.
It's also imperative that VTS_XX_1.VOB comes before VTS_XX_2.VOB sector wise. A stand alone DVD player doesn't have a clue about individual VOB files and plays them in one chunk starting at sector X and end at sector Y. A good not over technical guide is available at ww.pioneer.co.jp/crdl/tech/dvd/.
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Links:
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Fortunately, ImgTool Classic does this work for me, which is why I never had issues with my DVD burns. In addition, ImgTool Classic does a good job of putting the "zz*.PAR2" files at the end of the disc (on the outer tracks).
After doing this for almost 2 years, I still have yet to run into a standalone DVD player that gets confused by the extra files in the VIDEO_TS folder. Naturally, YMMV...
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#12 2006-02-05 13:36:37
Re: PAR2 and authoring DVDs
"tgh":yzlre9dv wrote:
I've re-read the specs again (and some other sources). Most of what I said earlier still applies, that the DVD is simply a UDF 1.5 file system.
However, the VOB/IFO/BUP files are required to be placed onto the disc in a specific physical order.
[/quote:yzlre9dv]
Hi tgh,
I think DVD-Video is UDF 1.02 file system. Doesn't it?
It can checked by Isobuster.
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#13 2006-02-06 05:11:22
- tgh
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- Registered: 2004-02-03
- Posts: 129
Re: PAR2 and authoring DVDs
It seems you are correct:
<!-- m --><a class="postlink" href="http://en.wikipedia.org/wiki/Universal_Disk_Format">http://en.wikipedia.org/wiki/Universal_Disk_Format</a><!-- m -->
DVD-Video media use UDF version 1.02. These discs contain a so-called UDF Bridge format, where both an ISO 9660 as well as a UDF 1.02 filesystem are present on the same disc, describing the same filesystem.[/quote:1hq4ojaq]
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