Running DVD2SVCD twice at the same time?

[schydog]

I am just trying to figure out here if there is a faster way then to burn 1 movie every 15 hours. I was thinking maybe it's possible to execute DVD2SVCD numerous times one after another once the files have been ripped from the DVD. If this is possible or some other way is possible someone please clue in a newbie. Thanks for the time gents.

[Labersack]

Have you ever tried the batch mode of DVD2SVCD?

[chips144]

You can use "rip only" to rip all your dvd's first then use batch processing for the remaining dvd2svcd operations. This strings one movie after another through to completion, but does NOT do simultaneous processing. I use this method all the time.
You can spawn multiple dvd2svcd processes, but you have to remember that when you approach 100% CPU usage and further spawns will only slow down every process.
In other words, lets say that with your setup the first dvd2svcd process operates at 50% CPU usage. Theoretically you could then spawn a second process which would use the remaining 50%. Anything beyond that would simply slow all processes.
Some people have reported success using 2 simultaneous processes. I, however, have had problems doing this. I ended up with movie1 video incorporated with movie2 audio. I have to admit that I didn't spend very much time trying to determine the problem. Indeed, it may have been a cockpit problem.
Beyond your basic question, I have some advice. Do a search across the forums looking for suggestions to speed up the process. For instance, I have a 1.7Ghz P4. Since I rip from dvd's, the quality of the source material is high enough that most of the filters available are not needed. The one filter I do use is "unfilter", an alternative to the sharpening filter. My priorities are:
1. quality
2. time to transcode
3. least important to me is the number of disks required.
That being said, the entire process including the initial ripping of the dvd takes me approximately 1.2 times the length of the movie (assuming a progressive not an interlaced movie). For me personnally, I can't justify doing multiple pass VBR and taking an extra 2 to 4 hours just to get the final file size down to fit on 2 cd-r's. I use single pass CBR set to white book compliant SVCD specifications and get approximately 41 minutes on an 80min cd-r. The quality is superb. I have a 3 disk changer dvd player so it doesn't matter to me if I have to press change disk once or twice while watching the movie.

[ux-3]

Well, getting a second PC has proven to speed up the process. Also working while coding has become easier...

[scorpio61]

I actually run two copies of dvd2svcd, both ripping and decoding a different movie. Works great. But then I'm also running a dual cpu with 1gb of memory. :)

[da franksta]

@scorpio61
didn't know it was possible. i always thought things would get screwed up. i'll give it a try, just for kicks. are you running the same dvd2svcd.exe twice, or do you use different copies?

[UltimateDBZ]

Running a new instance of the same .exe shouldn't make a difference.

The only time I do something like this is when I'm testing the current release version against the latest beta version.

[Holomatrix]

Is it CCE that hogs the CPU? I'm just wondering if what schydog is talking about is having one process of DVD2SVCD encode the first half of the chapters in a movie and have another instance of DVD2SVCD encode the last half of the movie. Then CCE would be running twice @ the same time and get the movie encoded in half the time. 7.5hr instead of 15. I have been pondering this for a while now but have not tried it yet.
Hope I made sence :)

[UltimateDBZ]

Running 2 instances at once will make each instance run half as fast, you will not finish 2 conversions in the same time as 1. Though video encoding (and therefore CCE) is the most CPU-intensive task, all tasks will use as much CPU power as is available, and it is therefore a rare occurence when doing 2 conversions at once on the same machine is of any use.

[da franksta]

avisynth is most cpu-consuming