Problem: All of the capture programs work fine for about 30-45 seconds (long enough to capture about 1000 frames) then I start losing 9 out of 10 frames.
I have tried every program I could find -- Virtual Dub reports a drop in CPU usage to about 15% when it starts dropping frames -- under normal capture CPU usage stays at 60-70%. AviIO craps out with a full I/O buffer (50/50) after the time period (previously it stays at less than 10 in the I/O buffer). IuVCR won't work at all because it doesn't recognize a capture in YUV2 format (really bizarre problem here as it worked at some point and then just decided to start changing settings at random). Showshifter or whatever it's called is simply a POS that won't work either. Virtual VCR has the same issue of dropped frames but doesn't report any errors.
Here's my setup -- defragged harddrive, etc.
AMD 1200+, 768M, Ultra DMA-5 harddrive NTFS (25 gigs available for copying), Win XP, using the Bt drivers (not the Hauppauge ones).
Trying to capture at 720x480, YUV2, HuffyV, various sound levels (generally radio quality).
Here's the final kicker -- the previous two days it seemed to work ok. I was able to capture 7 and 10 minutes respectively under the exact same settings with around 10 dropped frames total. And, NOTHING changed in the meantime (at least nothing changed that I did).
Please help if you can.
Thanks.
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If your i/o buffers are running out in avi_io then your data rate is too high (as it tells you). Ideally you want to capture to a second hard disk, or at the very least have a separate partition for capturing to.
Also, try setting you virtual memory to a fixed size (1 and half times the amount of physical RAM you have) as this is supposed to keeps things running a bit more smoothly, but sacrifices some Hard Disk space.
Hope this helps.
Nick -
crimsont, I have three suggestions.
1) Capturing at 720 x 480 is high stress on the HDD/CPU and as a general rule it's not going to produce any discernable visual quality over capturing 480 x 480 uncompressed AVI encoded to an (X), SVCD.
2) Shut down ALL programs that are running in the background! In WindowsXP...>start>run>type "msconfig">Ok>startup>disable all>Ok>restart. You'll be amazed at the number of programs that were running in the background eating up CPU power while you are trying to capture.
3) Read this thread, http://forum.vcdhelp.com/viewtopic.php?p=238654#238654, do as Mavrick did and you'll have instant success! Not to mention the absolute entertainment value of the discussion!!!Evil flourishes when good men do nothing. -
Thanks for the prompt replies. I will try fixing my virtual memory to around 1 gig.
Regarding the data rate, I am trying to capture from a satellite TV/recorder (e.g. pause live TV similar to TIVO) and save it to a DVD in as good of a quality as the source. Is this possible? Like I stated in my original post, I have been successful twice getting 7 and 10 minute segments and encoding them to MPEG-2 with pretty good results (4000 avg bitrate). Will I suffer a loss in quality if I drop down to 480x480? I tried 360x240 and it was simply too blurry to be of any use.
Also, why would Vdub report 0-2 dropped frames with 70-80% CPU usage and then after about 45 sec. drop to 20% CPU usage and dropping frames like crazy? -
If you are capturing from t.v. or satellite you don't ever need to capture higher than 480x480 ntsf or 480x576 pal. These will give good results if you are planning on converting them to vcd or svcd. I'm sorry didn't read your post that good. To put them on dvd just capture in huffy or pic video 19 or 20 setting. When you rencode them use abit rate around 2500 to 3000 what ever your dvd player will handle.
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Well I have tried various resolutions and data rates and Vdub and Avi-IO give me the exact same error regardless of data rate!
It will run for about a minute and then my CPU usage will drop from 40-45% with 0 frame loss to around 12-18% with about a 90% frame loss.
I tried setting a fixed partition and no luck. Checked my IRQs and the capture card isn't sharing it with anything. Preview mode is off in case that might have been the culprit but nothing.
Very very frustrated. Any help is appreciated. -
I ran into a similar problem and found it was a PIO mode hard disk. The BIOS reports DMA but Win2K shows PIO for that HDD only. Switched to a DMA hard disk and captured at 30fps, 8bit mono@44Khz (uncompressed). I don't have the horses (yet) to do anything too intense on the compression side. Specs are:
Win 2kPro
AMD 700Mhz
PC100 memory
5400RPM drive
Win-TV PCI ($49 version) with latest drivers
nVidia 400MX video (64MB)
VirtualDub (1.48)
320x240, 16-bit color
One of my 7200 drives (non-system) is the PIO model. I benchmark with the 5400 for a "low-end" baseline.
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