[Dvdrtools-users] dozens of hours of audio on DVD

[Scott Prive]

Oh, OK, we were talking about two different things. What you say makes sense to 
me now. :-)

On the mp3 subject, I do not think there are ANY standalone DVD players that 
support playing MP3's off of a DVD recordable. Plenty of players support mp3 on 
CD, and other content (video) on recordables, but not mp3-on-dvd. 

This is the case with my new (introduced Q2 2002) Samsung DVD-621 five-disc 
changer. It's a pity, because with 24 GB of music in the player, I would not 
often need to change discs for music!

There was a Slashdot story this week about a new Sony player that did mp3's off 
DVD... but it doesn't seem to be a Video player when it is "standalone" (it 
relies on software movie decoding when hooked up to a PC). This information 
could be wrong as the information wasn't clear.



Since you are interested in DVD music discs, here's my brain dump and some 
extra info for the list archives::

I've made some "audio only" DVD-Video discs (using a still for video track), 
and hours of 2-channel AC3 encoded audio. The audio quality seems "perfect" at 
a CBR of 224/48Khz. I created 6 "alternate" soundtracks to the copyright-free 
classic movie Metropolis... about 12 hours of music is not bad considering 
there's a 2-hour video track. 

BTW, Metropolis is *fantastic* using Nine Inch Nails' "The Fragile" as the 
soundtrack. The audio almost seems choreographed to the movie, with matching 
transitions and changes in the mood. 

Converting music to audio suitable for DVD-Video format is a labor intensive 
process of: 

1) .m3u playlist converted to a single .WAV track (or rip your CD to a single 
WAV - not file-per-song)
2) Encode the WAV as AC3 (or MPEG2 audio)
3) Import .resulting audio to DVD authoring program
4) Optionally set chapter points (copy the timecode from the .m3u playlist). 
It's up to you if you want a chapter-per-album or a chapter-per-song. You can 
only set up to 99 chapters per Video Title Stream (VTS), so you will need to 
create multiple VTS tracks. 

Info) Some -- all?? --  DVD players support "random play" within a DVD Video 
disc, so it will bounce around between the chapters on a single disc. This 
differs from normal CD-audio changers, where random play will jump between 
discs. The side effect is your "complication DVD discs" will play in their 
entirety (random or not) before going to the next disc, so balancing the 
content (your musical preferences) is critical with DVD audio. You don't want 
to put all your Pink Floyd and Led Zeppelin on a single disc, if you don't 
*want* to listen to every single one of them at once...

The audio quality of 2ch AC3 vs. MP3 at the same bitrates is not noticeable. 
But as you can see above, it's a LOT more work to create 5 gigs of DVD audio, 
compared to the convenience of recording 5 gigs of plain-old MP3s. 

I'm not aware of any AC3 encoders for Linux -- I use BeSweet on Windows, which 
is free-as-in-beer. I am not aware of any Linux DVD authoring tools that allow 
chapter points either. I don't know if any Linux C coders have approached the 
authors of the "freeware" tools BeSweet or IFOEDIT regarding a port, but these 
are missing pieces of the DVD Video toolchain which are key (IFOEDIT is not yet 
a full blown authoring tool but that is the author's stated goal).

I might automate this MP3-->AC3 & chapter point process once work slows down. 
Except for the final authoring, everything can be done with Perl code as glue 
(on Windows... as mentioned, the BeSweet AC3 encoder isn't ported to Linux).

Cheers,
Scott


> -----Original Message-----
> From: address@hidden [mailto:address@hidden
> Sent: Thursday, October 24, 2002 10:20 AM
> To: Scott Prive
> Cc: address@hidden
> Subject: RE: [Dvdrtools-users] Sony DRU-500A DVD-RW - command sequence
> error
> 
> 
> 
> Sorry, I was a little vague on the DVD+RW issue: my DVD
> player plays mp3s from CD with an ISO9660 fs. I've
> already tried with my friend's DVD+RW video which played
> ok on his player but was not recognised by mine so I the
> failure with my DVD+RW mp3 collection disk was to be
> expected. The disk mounts fine on Linux.
> 
> 
> br,
> Jussi-Pekka
> > Hi,
> > 
> > I might be telling you something you already know, if so 
> don't be offended ;-)
> > 
> > When you say you had a "successful" burn, but the DVD Video 
> player does not 
> > recognize it... there can be more than one way to fail in a 
> DVD Video player, so 
> > I am curious as to how you determined it's the disk? 
> > 
> > It very well might be the drive cannot read DVD+RW (in fact 
> it's most likely), 
> > but the other possibility is the "authoring" is somehow 
> noncompliant.
> > 
> > I say this because I once made a DVD-R that played on the 
> computer DVD software, 
> > but not on the Video Player. It turned out I had illegal 
> pointers in the IFO 
> > files, which the computer didn't care about but the 
> standalone player did. There 
> > are, of course, other ways to confuse a DVD Video Player 
> (lowercase files, etc). 
> > Video players don't seem to have "real" filesystem support, 
> and make many 
> > assumptions about file structure.
> > 
> > All reports seem to be that DVD+RW/+R is less compatible 
> than DVD-R -- and I'm > convinced of this myself -- but 
> before you conclude the format cannot be read, 
> > you might want to test some more.
> > 
> > Two tests I can think of:
> > 1) Do a 1:1 disk copy of something that plays on your DVD player. 
> > 
> > 2) Author again to DVD+R. On EITHER side of the DVD "format 
> war", the write-once 
> > media have higher compatibility.
> > 
> > Hope this helps,
> > 
> > Scott
> > 
> > 
> > 
> > > -----Original Message-----
> > > From: Jussi-Pekka Sairanen [mailto:address@hidden
> > > Sent: Wednesday, October 23, 2002 11:02 PM
> > > To: address@hidden
> > > Subject: [Dvdrtools-users] Sony DRU-500A DVD-RW - command 
> > > sequence error
> > > 
> > > 
> > > 
> > > Hi,
> > > 
> > > So I rushed to Fry's to get me a Sony DRU-500A. With 
> dvd+rw-tools I 
> > > managed to burn a DVD+RW succesfully. However, my DVD 
> player doesn't 
> > > recognise DVD+RW so my preferred format would probably be DVD-RW.
> > > 
> > > Burning DVD-RW failed. Befor any bits get written I get an 
> > > error message:
> > > 
> > > 
> > > Sense Key: 0x5 Illegal Request, Segment 0
> > > Sense Code: 0x2C Qual 0x00 (command sequence error) Fru 0x0
> > > Sense flags: Blk 0 (not valid)
> > > 
> > > 
> > > Is there something I've overlooked? The disk is not 
> formatted, I read 
> > > someplace that it is not needed with DVD-RW. How would you do 
> > > it anyway?
> > > 
> > > 
> > > 
> > > Here's the whole output.
> > > 
> > > 
> > > linux /home/jps# dvdrecord -packet -v speed=2 dev=0,0,0 
> > > video/jp/mp3.iso
> > > dvdrtools - based on:
> > > Cdrecord 1.11a15 (i686-pc-linux-gnu) Copyright (C) 1995-2001 
> > > Jörg Schilling
> > > TOC Type: 1 = CD-ROM
> > > scsidev: '0,0,0'
> > > scsibus: 0 target: 0 lun: 0
> > > Linux sg driver version: 3.1.24
> > > Using libscg version 'schily-0.5'
> > > atapi: 1
> > > Device type    : Removable CD-ROM
> > > Version        : 0
> > > Response Format: 2
> > > Capabilities   :
> > > Vendor_info    : 'SONY    '
> > > Identifikation : 'DVD RW DRU-500A '
> > > Revision       : '1.0c'
> > > Device seems to be: Generic mmc2 DVD.
> > > Using generic SCSI-3/mmc DVD-R(W) driver (mmc_mdvd).
> > > Driver flags   : SWABAUDIO BURNFREE
> > > Supported modes: PACKET SAO
> > > Drive buf size : 4718592 = 4608 KB
> > > linux /home/jps# dvdrecord -dao -v speed=2 dev=0,0,0 
> /video/jp/mp3.iso
> > > dvdrtools - based on:
> > > Cdrecord 1.11a15 (i686-pc-linux-gnu) Copyright (C) 1995-2001 
> > > Jörg Schilling
> > > TOC Type: 1 = CD-ROM
> > > scsidev: '0,0,0'
> > > scsibus: 0 target: 0 lun: 0
> > > Linux sg driver version: 3.1.24
> > > Using libscg version 'schily-0.5'
> > > atapi: 1
> > > Device type    : Removable CD-ROM
> > > Version        : 0
> > > Response Format: 2
> > > Capabilities   :
> > > Vendor_info    : 'SONY    '
> > > Identifikation : 'DVD RW DRU-500A '
> > > Revision       : '1.0c'
> > > Device seems to be: Generic mmc2 DVD.
> > > Using generic SCSI-3/mmc DVD-R(W) driver (mmc_mdvd).
> > > Driver flags   : SWABAUDIO BURNFREE
> > > Supported modes: PACKET SAO
> > > Drive buf size : 4718592 = 4608 KB
> > > FIFO size      : 4194304 = 4096 KB
> > > Track 01: data  834 MB
> > > Total size:     958 MB (95:00.05) = 427504 sectors
> > > Lout start:     959 MB (95:02/04) = 427504 sectors
> > > Current Secsize: 2048
> > >    ATIP start of lead in:  -150 (00:00/00)
> > > Disk type:    unknown
> > > Manuf. index: -1
> > > Manufacturer: unknown (not in table)
> > > Blocks total: 2298496 Blocks current: 2298496 Blocks 
> > > remaining: 1870992
> > > Starting to write CD/DVD at speed 1 in write mode for 
> single session.
> > > Last chance to quit, starting real write in 0 seconds. 
> > > Operation starts.
> > > Waiting for reader process to fill input buffer ... input 
> > > buffer ready.
> > > trackno=0
> > > BURN-Free is ON.
> > > Performing OPC...
> > > Sending CUE sheet...
> > > Starting new track at sector: 427670
> > > Track 01:   0 of 834 MB written.dvdrecord: Input/output 
> > > error. write_g1: 
> > > scsi sendcmd: no error
> > > CDB:  2A 00 00 06 86 96 00 00 1F 00
> > > status: 0x2 (CHECK CONDITION)
> > > Sense Bytes: 70 00 05 00 00 00 00 12 00 00 00 00 2C 00 00 00
> > > Sense Key: 0x5 Illegal Request, Segment 0
> > > Sense Code: 0x2C Qual 0x00 (command sequence error) Fru 0x0
> > > Sense flags: Blk 0 (not valid)
> > > cmd finished after 0.005s timeout 200s
> > > 
> > > write track data: error after 0 bytes
> > > Sense Bytes: 70 00 00 00 00 00 00 12 00 00 00 00 00 00 00 00 00 00
> > > Writing  time:   11.121s
> > > Fixating...
> > > Fixating time:    0.001s
> > > dvdrecord: fifo had 64 puts and 1 gets.
> > > dvdrecord: fifo was 0 times empty and 0 times full, min 
> fill was 100%.
> > > 
> > > 
> > > 
> > > _______________________________________________
> > > Dvdrtools-users mailing list
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> > > http://mail.nongnu.org/mailman/listinfo/dvdrtools-users
> > > 
>