I just recently got around to trying video capture on my 7600/233 (that's why I got it, after all) and I must say I'm very disappointed.

Maybe someone in here who knows more about it than me can point out what I might be doing wrong, besides using a computer that's too slow.

Alright. The program I decided to use is VideoFusion 1.6 or something. It's the one with the PPC code that I hoped would make it work pretty good. It works fine at 15 fps with no dropped frames which is okay, but when I try to go up to 29.9 fps I start dropping frames. This is with no unnecessary extensions, AppleTalk off, VM off, 3xxx KB disk cache (auto), no other programs running, etc. I tried the YUV codec w/post compress and having the record window "off" while recording.

My goal is 29.9 fps because I want all the frames from my home movie to be captured into the QuickTime movie.

Here's some detailed info about hardware and software that might help out:

I'm using a hard drive that tested out at about a 7-8 MB/s transfer rate with FWB HDT 4.5

All the FPM DIMMS I own are in there, totalling out to a measly 136 MB, which I don't see why it wouldn't be enough, but probably isn't because I keep getting out of memory errors.

It has a 256K L2

The video card is a Formac Proformacce 3, but I don't see what difference this would make while capturing.

I do wonder about the impact of the Formac video card, instead of the onboard video. The driver for that card might be eating some of the bandwidth in the system. Although that card should accelerate many display operations (especially rendering in 3-D), it might be a bottleneck when handling raw video data that has to be transferred from RAM across the PCI bridge to the card (instead of going straight into VRAM). (see http://www.mug.jhmi.edu/mirrors/InfoAlley/1296/02/7500.html ) Of course, I could be totally wrong.

You might also take a look at Apple Video Player for grabbing video -- I don't know that this is any better than VideoFusion, but it is worth a try.

Good Luck,

I agree with your assessment of staying with 8.6.

G4From128k

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The program I decided to use is VideoFusion 1.6 or something. It's the one with the PPC code that I hoped would make it work pretty good. It works fine at 15 fps with no dropped frames which is okay, but when I try to go up to 29.9 fps I start dropping frames.

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jt ™.
Trash Hauler: call sign: eight-ball
C.O. AC-130H SpecOps 68kMLAAF

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What's the spec on the pixel count and what are you using as your source for the Video input?

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Thanks for the info and I'd appreciate any more.

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if You play back the frames in QT player after having captured them... do you get them at 15fps?

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You haven't let the thing finish it's rendering work and see what it gives you?

Maybe if you capture in 5-minute segments and string them all together in QuickTime....

The Lightning Stalker

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I just remembered that the hard drive is using a Hard Disk Toolkit

driver. Does anyone think it would benefit from using an Apple driver?

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Total performance suggestion:
Use Apple Video Player with the onboard video out and the Apple HDD driver...
If the HDD driver thing works... the ForMac video card should be good though...

The suggestion for capturing in slow motion was culled from info on using PDS cards in the LC era. They did a separate capture of the soundtrack too, IIRC. It was a good trick for doing full screen, full frame rate clips on rudimentary hardware. The frame rate was jacked back up to 30 FPS in a video editing program.

Still have that book somewhere..

I have one for my PM8500 was wondering how the nubus ones worked.

I also have a radius spigotav in my 840av

Here's the gist of my lost post:

I checked the capture res and depth and it's 320x200x32. I also found out how to get the playback fps in QuickTime and it was like 24 fps or something, while the movie itself is 30 fps, so that would explain some of the jerkiness. I copied it to the PC which has a Radeon 7200 and therefore doesn't skip frames and it still looks a little jerky like it missed a frame here and there during the capture.

Could it be that the VCR and the 7600 are out of sync and I'm losing frames that way? Probably not, but I don't know. I suppose anyting's possible.

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I checked the capture res and depth and it's 320x200x32. I also found out how to get the playback fps in QuickTime and it was like 24 fps or something, while the movie itself is 30 fps, so that would explain some of the jerkiness. I copied it to the PC which has a Radeon 7200 and therefore doesn't skip frames and it still looks a little jerky like it missed a frame here and there during the capture.

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LC 2, LC 3, Q605, Perf 638, Colour Classic (160 603e) 6100, 7200, PTP 225 (Quad 604), PM 9600, G4 Cube

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Isnt the video 29.9 fps or something? If you pick 30 the audio will desync with the picture sooner or later

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Right. It's set to capture at 29.9, but I said it was 30 because after it's compressed and everything and you go to get info on the video, it says it's 30 fps.

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quicktime codec you've chosen to save files with is converting them to 24fps

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That could explain the 24 fps playback. The only thing is that in the info, it says that the movie is 30 fps. If the codec converted it to 24 fps, wouldn't it say that it was 24?

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See whatother codecs you can use

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I tried the Sorenson and Video codecs, but I think the other ones are for line art or graphics or something. I can blog all the available codecs if you want.

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