why can't I get 30 fps playback?

Jay M wrote on 5/5/2008, 11:03 AM
I captured DV from a digital 8 camcorder. the video is 29.97, the computer is a Q6600 with Vegas 8 and vista. CPU is near 0% when playing back, there are no effects and as far as I can tell the output matches the source.

If I open the same video in the Trimer it plays as expected, but the preview window runs at about 14fps.

Is this normal for Vegas? If so I would hardly call it "Pro"

~Jay

Comments

rs170a wrote on 5/5/2008, 11:25 AM
Is this normal for Vegas?

Absolutely not!!
I've got a QX6700 and I can play HDV files at full frame rate.
Are you playing this back from your C dribve or a separate drive?
If it's from a seaparate drive, how much free space is on it?
When was the last time you cleaned your computer of dust?

edit: check that your properties (File - Properties) match your source material.

Mike
rmack350 wrote on 5/5/2008, 11:35 AM
While the trimmer has a lot less overhead than tracks, Jay should definitely get 29.97 playback if it's DV footage.

Other possibilities might be that a track has it's opacity nudged to 99%, maybe an hdd has been reset by the system to PIO mode, maybe it's not really DV footage on the hard disk (does digital8 also get captured over 1394?), maybe a filter is engaged in the output (set this through a button on the preview window).

The fact that there's no CPU load makes me think it's not a filter. Aren't there some audio gotchas that can cause this?

Rob Mack
johnmeyer wrote on 5/5/2008, 4:09 PM
Did you capture the HDV footage in Vegas? If you captured it with any other application other than Vegas, and you are trying to play the native m2t file on the timeline, you will not get the expected performance. The difference is about 3:1, at least. Also, try setting the Vegas preview resolution to "Preview" (you will find an icon directly above the preview screen for setting resolution.
rmack350 wrote on 5/5/2008, 4:40 PM
Jay answered that in his first sentence: "I captured DV from a digital 8 camcorder "

Rob
TheHappyFriar wrote on 5/5/2008, 6:26 PM
doesn't mean it's DV. could of been captured by something other then vidcap & had a codec added to it.
musicvid10 wrote on 5/5/2008, 6:51 PM
If by chance it was captured as MJPEG avi it may not play back at full frame rate with software codecs.
johnmeyer wrote on 5/5/2008, 7:19 PM
Oops, brain freeze. I thought he captured HDV. If he has DV (Digital8 is the same as DV), then heck, I can get fast playback on a 500 MHz PC. Something definitely very wrong.

Note to Sony (I think I've said this before): It would be VERY useful to customers (as well as to those of us that try to help other people) if Vegas could provide a view (perhaps in Edit Details) that shows all the fX, compositing, etc. that is active on each track. Like others have said, he has probably inadvertently applied something that is cause everything to slow down.

Note to Jay: try disabling all fX (there is an icon above the preview window that will do this) and see if you get faster playback. Also, right-click on the video event on the timeline, select Properties, and then select the Media tab in that dialog. Directly below "Attributes" you will see "Format." What Format is reported for this event??
jimmyz wrote on 5/5/2008, 8:49 PM
Make sure in properties that the pixel format in not set to 32 bit floating point.