Video editing lag? Seriously??

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RichiRichX

Discussion Starter · #3 · Aug 13, 2013

Quote:

Originally Posted by Kipsofthemud

I don't work on video editing much, but I believe it's pretty much impossible to get what you were trying to achieve. These filters/effects just take a really big toll on a computer...I've seen this happen when my girlfriend, who has a pretty beefy computer herself, adds a few effects as well.

I just googled if Vegas Pro supports hardware acceleration : http://www.sonycreativesoftware.com/vegaspro/gpuacceleration

This might be something worth looking at for you, as a GPU can handle these things better (in some cases anyway) than a CPU.

Edit: Maybe Intel Quick Sync can help you out as well...is it enabled? I think it's even faster than using your GPU with rendering but maybe thats not exactly what the preview is doing..sorry if I dont know everything but no one has responded to your thread yet so I thought I'd at least give you some pointers

Let me know if it improves

Thanks for your answer

I tried enabling GPU acceleration of course, but the preview window became completely red and Vegas crashes when I press play.

Apparently the 600 series and 700 series Nvidia cards experience tons of problems with Vegas. They're not very well supported I guess. A shame.

Anyway I just don't think that my PC could be lacking. I highly doubt a second GPU would help because when I was editing, only the CPU load went up, and it barely hit 60%, whereas the GPU load didn't even hit 10%.

I wish I could find a fix to this but nothing turns up on Google... :\

-Rich

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Kipsofthemud

· #4 · Aug 13, 2013

2

Quote:

Originally Posted by RichiRichX

Thanks for your answer

I tried enabling GPU acceleration of course, but the preview window became completely red and Vegas crashes when I press play.

Apparently the 600 series and 700 series Nvidia cards experience tons of problems with Vegas. They're not very well supported I guess. A shame.

Anyway I just don't think that my PC could be lacking. I highly doubt a second GPU would help because when I was editing, only the CPU load went up, and it barely hit 60%, whereas the GPU load didn't even hit 10%.

I wish I could find a fix to this but nothing turns up on Google... :\

-Rich

Yeah mate a 2nd GPU wouldnt help at all (not sure if you understood if that is what I meant, but I didnt

) If you're having trouble with the GPU, maybe you could try installing the Quadro/Tesla (whatever they're called these days) drivers(or possibly even the bios, I dont know if you can use your 770 to pretend you have a Quadro/Tesla, I know you could with a 690 or 680) to see if they are more stable when using Vegas?

What about Intel Quick Sync? It's supported by your CPU and it should help with rendering or transcoding or w/e very, very much. Should be tons of stuff on google on how to enable it, maybe even specifically with your motherboard!

If you say the CPU load only goes up to 60%...then I highly doubt it's your hardware though...What about your RAM, is that fully used when you're doing the preview thing?

Some things that came to mind..maybe one of these things help

Edit: Have you tried the build Ram preview option yet?

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PR-Imagery

· #5 · Aug 13, 2013

How much memory are you using when it slows ups?

What hard drives? What resolution content?

Your problem doesn't sound related to the gpu anyway, since as you said, enabling acceleration created problems so I'm assuming you have it disabled.

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RichiRichX

Discussion Starter · #6 · Aug 13, 2013

Thanks for your replies guys.

Only about 6-7 GB are being used when I'm editing (41% of my RAM). So it can't be that.. 16 Gigs is more than enough.

I'm starting to suspect: could it be the hard drive? All the footage is on a Western Digital Blue 1TB. Maybe 7200RPM isn't enough? It's definitely connected to the fastest Sata 3 port on my motherboard, but I don't know :\

I'm not running any other heavy apps that need the HD at the same time.

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PR-Imagery

· #7 · Aug 13, 2013

Quite possibly.

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hammong

· #8 · Aug 13, 2013

One thing you might try -- is get a second HDD or a SSD for scratch space. When you start working with large video files, the disk becomes bottlenecked trying to read AND write the data at the same time. I'm sure Vegas allows you to set up "scratch disk" - make it as fast as affordable. A 500MB/sec sequential speed SSD would be perfect, but another WD Blue 1TB single-platter HDD would be better than what you're doing now.

Keep in mind, if you're working with full HD video (1920x1080) that the video data itself takes up 445 GB per hour uncompressed. The files you read and write might be a lot smaller than that, but the system has to decompress whatever you're working with in real-time, then re-compress it to write the stream back out to disk. That's a lot of bandwidth.

Greg

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RichiRichX

Discussion Starter · #9 · Aug 13, 2013

Ok, I have found a possible fix.

I went to Options > Preferences > Video and then enabled "GPU acceleration of video processing". I said that Vegas would crash before when I enabled this, but it magically works now...

After restarting Vegas, there was no more lag when previewing with "Best" (Full). (Bitrate went up from ~15,000 to 24,000). And I can see that the GPU load is at about 30-40%.

However, this only works if you're watching a clip, that has no other clips under it on other tracks. I don't know why, but Vegas has always had this problem... Multiple layers of video at the same time will always lag.

Thanks for your reply Greg. Regarding the scratch disk - I thought that's only useful when you're out of ram, isn't it? I frankly can't find any scratch disk settings in Sony Vegas, but I've allocated it lots of ram.

The video files aren't that really. I have a total of 32 Gigs of footage, and I'm barely working with half of it at the moment.

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PR-Imagery

· #10 · Aug 13, 2013

Would probably be under media cache or something like that. If its anything like Premier, it copies files from the source to the cache drive depending on prject settings (you can set it to read from source or copy to a new location) not sure how Vegas manages things. I'd go raid 0 with another 1tb drive rather than add a ssd; you'll burn it out pretty quickly with heavy editing use.

A fast drive wouldn't hurt; typically everything is cached in ram, but reading/writing from/to the drive will always be the slowlest part in the process. Not too much of a problem as long as you're not hitting the memory limit.

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RichiRichX

Discussion Starter · #11 · Aug 14, 2013

Quote:

Originally Posted by PR-Imagery

Would probably be under media cache or something like that. If its anything like Premier, it copies files from the source to the cache drive depending on prject settings (you can set it to read from source or copy to a new location) not sure how Vegas manages things. I'd go raid 0 with another 1tb drive rather than add a ssd; you'll burn it out pretty quickly with heavy editing use.

A fast drive wouldn't hurt; typically everything is cached in ram, but reading/writing from/to the drive will always be the slowlest part in the process. Not too much of a problem as long as you're not hitting the memory limit.

Thanks for your reply.

Do you mean I will burn out the SSD pretty quickly, or the HDD? Currently Vegas is installed on the SSD, but as mentioned all the footage is on the HDD. Guess they're both working hard...

The little help that enabling GPU acceleration gave me, is not really good.... Vegas keeps crashing with GPU acceleration enabled. It's a real, real mess. If I could only find a fix to that, then it would definitely help the preview lag problem.

However it seems so many Nvidia card owners have problems with this, but there seems to be no real solution.

Out of ideas here.. :\

-Rich

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Lime

· #12 · Aug 14, 2013

Quote:

Originally Posted by PR-Imagery

Would probably be under media cache or something like that. If its anything like Premier, it copies files from the source to the cache drive depending on prject settings (you can set it to read from source or copy to a new location) not sure how Vegas manages things. I'd go raid 0 with another 1tb drive rather than add a ssd; you'll burn it out pretty quickly with heavy editing use.

A fast drive wouldn't hurt; typically everything is cached in ram, but reading/writing from/to the drive will always be the slowlest part in the process. Not too much of a problem as long as you're not hitting the memory limit.

Eh, I'd argue that the SSD wouldn't burn out that fast. He'd have to write hundreds to thousands of TB worth of data to burn one out to just get to the point where it is no longer writable. The only time he'd have problems with that if he was running it 24/7 in an enterprise environment, and even then it would take 6+ months for it to die depending on the size of the drive.

I think an SSD would be a better investment. The larger it is, the longer it will last.

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amd655

· #13 · Aug 16, 2013

I do a lot of video editiing, i7 and i5 rig both lag when loading multiple video files, but usually when it is only 1 file, there is no issues.

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RichiRichX

Discussion Starter · #14 · Aug 16, 2013

Quote:

Originally Posted by amd655

I do a lot of video editiing, i7 and i5 rig both lag when loading multiple video files, but usually when it is only 1 file, there is no issues.

Well I tried doing some editing in Adobe Premiere. There seemed to be less lag once an effect was applied (but not while applying it).

Only way to get lag-free preview with "Best" settings in Vegas, is to use GPU acceleration at the moment. But as I said it's quite unstable. Vegas keeps crashing every 5-10 mins.

-Rich

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B

Blameless

· #15 · Aug 16, 2013

To add effects to a raw video, the video often needs to be transcoded; depending on the source and the edits, even very powerful CPUs may not be able to do this in real time.

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