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Thread ID: 119137 2011-07-07 00:04:00 Sony Vegas 7.0 audio problem Kissingtheautumnsky (16455) Press F1
Post ID Timestamp Content User
1215300 2011-07-11 21:09:00 I would have thought that the video decoding would chew through more of the processor if it's not offloading it to the GPU, I'm not sure the 3000-series ATI cards can.

Then there's also the possibility that the HDD is just having too difficult a time loading Windows Media Player as well as buffering the video all at once... :D
Chilling_Silence (9)
1215301 2011-07-12 02:09:00 One other thing: get out your pen and paper and make a list of all the specs of your system:

- Mobo
- Graphics card
- CPU
- RAM
- communication interfaces (firewire, USB1, USB2 etc)
- version of Vegas
- other peripheral cards
- hard drive types and number (capacity, rpm, SATA, ATA, USB)
- what audio drivers are currently on your system (ASIO, MME, DirectSound) and which one are you using to record?

For example, you may need to download and use the ASIO4ALL audio driver if your audio is broken up when using either the MME or Direct Sound windows drivers. Once you install the driver on your system it will become an option in the audio driver selections. Then when you hit start an icon will show up in the task bar. You would then need to select it and configure the audio input device if it is not correct.

So much to learn! :) Go one step at a time. Make notes of what you've done in case of troubleshooting.

The external sound-cards, even the cheaper ones, usually come bundled with ASIO drivers. My suggestion is stay away from Soundblaster Live cards. Their drivers are usually written by proto-hominid monkeys and create huge registry bloat = slowed PC.
braindead (1685)
1215302 2011-07-12 16:27:00 Here's a good idea:
Take the files, encoded at 3mbps and 4.8mbps and chuck them on another (faster than yours?) PC.

See if they have issues like yours. If they do, then it's an encoding issue. If they don't, it's likely a decoding issue and as braindead says your PC could be struggling to keep up.

That, or make a couple of 'sample' files, upload them to something like Megaupload, and link to them on here for one of the PF1 members to test out for you.

Regardless of what computer I put them on, I still had the issue. So it's probably an encoding problem then? Thanks for all the help, by the way.
Kissingtheautumnsky (16455)
1215303 2011-07-12 16:34:00 Hi Kissingtheautumnsky - there are a number of things that can lead to that initial drop-out, and among them is using your onboard mobo audio for intensive data processing or using a crap audio/video PCI card.

My suggestion is to look around for a good quality used or new sound card (either PCI or external) such as the M-Audio Audiophile Firewire or USB card. Prices on these and other brands have come down a lot in the last 2 years and you might be able to pick one up fairly cheaply.

Then you can disable your on-board audio and let the new one do some of the heavy lifting. I don't know if your mobo provides Firewire. If so, go for a Firewire card or use a GOOD quality PCI Firewire interface card and plug your external sound card into that. Otherwise get a USB2 or USB3 audio card if your mobo supports that.

Please note: I'm not saying that this is the answer to your problem.

If you're serious about audio/video editing without glitches, do yourself a favour and spend a few extra $$$ for a quality semi-pro card.

OTOH, if you just want to mess around and use what you have, you'll need to optimise your system as much as you can. Google "optimize your PC for video" and work through the suggestions.

Having been down the road of starting off with cheapo sound and video cards, I well know the time I wasted in screwing around trying to "get the elephant to fly".

This (www.hv20.com) is a good forum to ask questions. A lot of people there use Vegas. Wherever you ask, be sure to give them all the info on your system and what you want to accomplish.

Thanks for the help. I optimized my PC, but I still have the same issue. I'll probably just search for an external sound card and see if that solves my problem. If it doesn't, I'm sure the card will at least work better than what I have. I will check out that forum in a bit; thank you for the link...and for the future forum-posting tips.
Kissingtheautumnsky (16455)
1215304 2011-07-12 19:00:00 Ok, now I'm confused again. I tried rendering the beginning of a video I've been working on. I used 4.8mbps HD .wmv format as usual. I had the same audio problem as always (cutting out the first few seconds). So then I decided to do a trial with the same settings, but that seemed to not have the audio issue. When I tried my other project again, there was the issue. To see what I'm talking about, I've saved and uploaded the files to megaupload.

This is the clip with the audio issue: www.megaupload.com

This is the test clip: www.megaupload.com

Here is an older video of mine where audio wasn't an issue (just for comparison; you don't have to watch it all): www.megaupload.com

They were all rendered @ 4.8mbps HD (Audio: 192 Kbps, 48,000 Hz, 16 Bit, Stereo, WMA9.
Video: 23.976 fps, 1280x720, WMV V9 CBR Compression, Smoothness 90).

Thank you in advance if anyone is willing to help.
Kissingtheautumnsky (16455)
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