Audio DVD

[bladefist]

I'm trying to make my own program that resembles audio dvd creator, and I have AC3 files, and I'll create a program that makes BMPs for each song, so that the tv will show song title, etc. That is all and fine. I can use muxman to get each AC3 combined w/ the BMP to make a VOB. Well that would mean I have as many VOBs as I have mp3s. That isnt efficient, that would create a max of 99 titles. How can I combine the VOBs or AC3s+BMPs to look like a regular dvd, w/ like 3 or 4 VOBs and chaptering within each?

[Cornucopia]

You wouldn't be able to use the BMP's directly, would need to convert them to I-frame-only MPG's (aka "MPEG-stills") first, then mux.

Scott

[bladefist]

i'm a bit confused. Muxman does this I think. But one Bmp/AC3 at a time. However, doing this before hand is doable. Still raises the problem, If i have 200 mp3s, then ill have 200 VOBs which isnt good. Still must combine them into just a couple vob's w/ chaptering.

[thegeeman]

Why don't you just drop a jpeg in as the 'title menu'? I've compiled Audio DVD's using that program and i use the front and back album covers as my 'album/track menu's'. Just a thought. Also less space as BMP's.

[bladefist]

A good idea...but didnt quite answer the question at hand

[Cornucopia]

You're going to want to make use of Chaptering. To do that, you'll need to concatenate (merge/append) the files, plus you won't be able to use I-frame stills, you'd need to actual make a piece of video. Good thing is you could still keep the bitrate real low on the video side. Would need a way of keeping tracks of separate file lengths/timings, so that when they are concatenated these timings are incorporated as the chapter stops.
Then you would be able to have up to 99chapters x 99 titles = 9801 elements (more than enough).

Scott

[bladefist]

and what program is going to accomplish this, assuming these chunks are vobs

[Cornucopia]

I though the whole point was that you were creating a program. I'm just giving a usable method to be incorporated in the program.

Scott

>>>>>>>
edit: chunks could be VOBs, but would make more sense if they were still the elemental streams when concatenated.

[countzer0]

You could probably take your end result VOB;s and Join them using the mpeg tools in tmpgenc, then author the resulting large VOB with an authoring program, pointing chapters at the song breaks (DVD lab will do this with auto chapter detection).

Just a thought. I think he means more of a regiment then developing his own program. Am I right?

[bladefist]

Both. In order for me to create a program to do this, I need to first be-able to do it on my own. Only then can I understand what code needs to be created.

[crazy14muzic]

I find that muxman is one of the easiest ways of creating a audio only dvd. You can convert an 80 minute cd 10 minutes depending on your system.

Rip the disc
convert to 48k wav
convert to ac3 or leave as lpcm
a little math is required for chaptering it out but find your cd track markers and convert to frames and save them to text file
make you a still picture whether it be your jacket insert or just a blank
input all the required info into muxman
still as movie
audio as audio
import chapters through the file menu
import subtitles with track names (optional)
build it the dvd and woila cd is now a dvd audio only disc