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Convert two videos for iPod at a time on dual CPU Macs Apps
When a friend of mine recently got an iPod video, he asked me to convert several videos for him as I have a fast dual processor G5 and he does not. So I found out about iSquint, a free iPod video conversion tool. It really works well, but I could not have it make full use of my dual processors; Activity Monitor would read 100% processor use by the app (rather than the 150% to 190% I was hoping for). I ended up trying the developer's 'Pro' video conversion tool, Visual Hub, which is supposed to be able to use Xgrid to convert multiple videos at once. The Xgrid feature appears to be heavily buggy, as I could never get it working -- and neither could anyone in the developer's forums, either.

So I finally came up with this unique solution: make a new folder in the Applications folder and name it iSquint. Within this folder, I put two copies of the iSquint app named iSquint - 1 and iSquint - 2. I can now open both simultaneously in the Dock, set up two queues, and have two video files processed at once. This allows my processor usage to hit a fairly consistent 180%. I can now process a batch of videos nearly twice as fast as I could before. I am assuming this will benefit any dual processor or dual core Mac, which is now every model.

[robg adds: You could probably use this same trick with any video conversion tool.]
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Convert two videos for iPod at a time on dual CPU Macs | 6 comments | Create New Account
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Support Forum
Authored by: TylerL on Jul 19, '06 08:16:50AM
The VisualHub forum is a support forum. People don't usually take the time to post when things work right.

An example of Xgrid functionality:
http://uctv.canberra.edu.au/documentation/visualhub

Please e-mail me or post on the VisualHub forum for help. I've made many improvements to Xgrid on non-standard network types, but I can't fix new problems without some information.

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Support Forum
Authored by: TylerL on Jul 19, '06 08:55:27AM

...also, running two copies of VisualHub or two copies of iSquint at the same time is very likely to cause instability, since they'll end up sharing the same scratch files and stepping on eachother's toes



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Convert two videos for iPod at a time on dual CPU Macs
Authored by: rhowell on Jul 19, '06 08:16:55AM
I wonder if you could run multiple instances of the same application (as has been discussed here at macosxhints for a long time), rather than create two separate applications:

http://www.macosxhints.com/article.php?story=20030711041351836

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Convert two videos for iPod at a time on dual CPU Macs
Authored by: ben_k on Jul 19, '06 02:54:19PM

maybe this was a dual chip vs dual core thing because i have a dual-core intel iMac, and i ran iSquint just to have a look- one instance of the program appears to be happily using 120-130% of the CPU... i could be wrong here but this indicates to me that it's using more than one 'core'



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Convert two videos for iPod at a time on dual CPU Macs
Authored by: cvmarel on Aug 01, '06 09:26:35AM

Hello I am the original creator of this tip.

TylerL, I did not mean at all to offend your App VisualHub and I completely understand that you support forum will have many more cases of problems than successes. I was testing using version 1.0 and I understand that now you have made updates and xgrid is probably working much better.

rhowell, you probably can use multiple instances of iSquint using the method in your link, but my method is more for people who would prefer not to mess around in terminal.

ben_k, yes I have heard cases of iSquint using up to 130% processor power, but if you are doing a large batch you will save a lot of time by getting the processor power above 180%.



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Convert two videos for iPod at a time on dual CPU Macs
Authored by: rawktavio on Nov 06, '07 07:02:50PM

I just tried this and it really worked great on my dual quad core:

i encoded a batch of videos 8 times faster, awesome hint :)

---
zapping the pram....its like kickin' your mac in the nuts



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