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| tkotitan |
| Posted: Jun 9 2004, 04:59 PM |
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Unregistered
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I cap TV shows, and I normally cap in MPEG-1 so I can use plain old virtualdub. My queue can get backlogged, so often times I run multiple instances of vdub to render multiple files. (I have a dual amd 1800+ setup). Wirth normal vdub, the threading works fine. I have had 13 sessions running at once and they each render at like 8 fps.
Recently, I switched to vdubmod, (the latest, v1.5.10?) and starting capping in mpeg-2. I figure this will yield better picture quality. It turns out that a single render of vdubmod (of an mpeg-2 file) immediately hogs BOTH cpus unless I set the priority to "lower." (after which it still hogs them both, but I can do other things) This one job will bog down other threads on the system if the priority is at normal. vdub normally used at most 60% for a single render, a little more than one cpu.
It gets worse. If I try to run multiple renders with vdubmod, none of the threads play nice. One has to dominate. If I have 2 renders both set to "lower" they can often lock each other down, and both render at 0.0fps. My best solution is to stagger them, with one being "lowest," then "even lower," etc, and basically they are done one at a time.
This really defeats the purpose of multi-threading, doesn't it? My guess is that there is a bloated thread in vdub mod that needs to get trimmed. I see no reason for 2 a CPUs to be used fully, and I wonder if internal priorities are setup correctly as nothing seems to play nice.
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| fccHandler |
| Posted: Jun 9 2004, 11:41 PM |
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Administrator n00b
Group: Moderators
Posts: 3961
Member No.: 280
Joined: 13-September 02
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If all you need is MPEG-2 support, try my VirtualDub-MPEG2. The "core" of this program is the same as the real VirtualDub, so maybe that will work better for you.
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May the FOURCC be with you... |
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| tkotitan |
| Posted: Jun 15 2004, 01:24 PM |
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Unregistered
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| QUOTE (fccHandler @ Jun 9 2004, 05:41 PM) | | If all you need is MPEG-2 support, try my VirtualDub-MPEG2. The "core" of this program is the same as the real VirtualDub, so maybe that will work better for you. |
Thanks, fcchandler, that worked perfectly!
Now if only there was a TV capturing program that edited the commercials out for me.... |
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