Dropouts when rendering

MoBetta wrote on 6/12/2001, 10:24 AM

My project plays back just fine when previewed from the time line as a veg. file but when it is rendered as an AVI. file or as a Quicktime mov. file and viewed in Media Player or in Video Capture, I am getting all sorts of video and audio dropouts.

Any suggestions!!

Thanks

Comments

SonyEPM wrote on 6/12/2001, 12:23 PM

Maybe you are rendering as uncompressed and your system can't keep up? Try using one of the WM templates and then view it in Windows Media Player-

MoBetta wrote on 6/13/2001, 10:08 AM

S.F. Thanks for your response.

I did render again as a Multimedia: 320x240, 15 fps, res: good and audio best and the audio track is fine and the video appears not to be dropping frames (the video track has scenery stuff). I also re-rendered it as a NTSC DV: 720x480 29.970 fps, res: good audio: best and it is dropping frames.

Is this related to my system: Pentiumlll (100mhz bus), 600mhz, 256RAM, IBM 45gig 7200 H.D.

Greatly appreciated

MoBetta

SonyEPM wrote on 6/13/2001, 11:37 AM

Rendered dv files should playback in Video Capture tool at 29.97 unless you have a system bottleneck somewhere. You need this format if you are outputting to DV.

Please note: Media Player 7 can definitely bog down on DV files, so if Media Player is your destination (desktop playback), try using one of the WM templates, like 512.

MoBetta wrote on 6/13/2001, 1:06 PM

My final destination is to print to DV tape. When the project is played back through Capture I experience the same dropouts. Is it a hardware or software problem?

pelvis wrote on 6/13/2001, 8:21 PM

3 things that will help:

Defrag all drives.

Make sure DMA is "on" for all IDE drives.

Try to keep your video display card, SCSI, and 1394 card on separate IRQ's- this can make a big difference. Microsoft has online info about how to do this.

MoBetta wrote on 6/13/2001, 10:27 PM

Thanks Pelvis...items #1 & #3 are taken care of but I'm not sure about #2...DMA and IDE drives??. Can you give me more info.

Appreciated

MoBetta

Cheesehole wrote on 6/14/2001, 6:46 AM

In Win2k go to Device Manager.
IDE ATA/ATAPI controllers
double click on Primary or Secondary IDE channel
Advanced Settings
Make sure 'current transfer mode' says Ultra DMA Mode
If not, make sure 'Transfer Mode' says DMA if available
for all channels/devices then reboot.

Not sure what to do if that doesn't work. My bud is using a WD 80GB 7200 ATA100 drive and can't get Ultra DMA mode to work.

Not sure how to do this in Win98... anyone?

Ted_H wrote on 6/14/2001, 1:47 PM

Enabling DMA in Windows 98:

-Go to device manager.

-Look for your hard drives in 'Disk Drives'.

-Right click on the drive and select properties.

-Click the tab in the middle (I think it's called settings).

-Check the box that says 'Enable DMA' and restart.

Ted

MoBetta wrote on 6/14/2001, 10:23 PM

Ted,

I followed your advise and enabled DMA option ( I assume I did since the box only show "DMA" not "enable DMA", so I removed the check from the box and rebooted). It has not solved the problem, still dropout in video & audio???

In my system properties"image devise" I've got 16 yellow exclamation mark "unknow device". I assume I should get rid of those but what is causing them to appear in the first place?

Anybody else with ideas regarding dropouts when rendering?

MoBetta

Cheesehole wrote on 6/15/2001, 3:09 PM

MoBetta,

Removing the check from the box disables DMA. You want to enable DMA, so make sure you put the check back in that box.

It sounds as if you had DMA enabled, but there is still a bottleneck in your system somewhere. It is difficult to troubleshoot going back and forth like this. Those 16 !'s may be part of the problem in your configuration. If you have a means of getting your PC troubleshot, it would be a good idea.

If it was me, I'd re-install Win98, but that's cuz I'm a tech head. It's the quickest way for me to solve a problem like that.

What category are the 16 !'s listed under in your device manager? That would be a clue. What does it say when you doubleclick on the ! items?

MoBetta wrote on 6/17/2001, 6:17 PM

Cheesehole,

The !!!! are under imaging device. I will check the DMA box and try rendering a file to see if it makes a difference.

MoBetta

Cheesehole wrote on 6/19/2001, 12:10 PM

The imaging device may not be causing the problem, but it would be a good idea to figure out what's going on there. I think scanners/digital cameras are listed under imaging devices. If you have one of those connected to your system, try playing back your files without that device connected. If you don't have a scanner or digital camera, then windows is really confused about something.

Also, it seems you may be confused about where the problem is occurring. You don't need to re-render your files. The problem is happening when you try to play back your video, not while you are rendering. Vegas doesn't care how slow your system is when rendering. You'll always get a clean file. It's only when you try to play back your videos that system speed can cause problems.

So render one DV file and then keep using it to try to trouble shoot your problem.

Hope it helps!