Lagging lossless

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Lagging lossless

Postby macchinainterna » Sun May 17, 2009 8:36 pm

I've got a problem here . . .

I was importing my entire Speed Racer video lossless in Vegas 6 so that I could add a fixed version of my studio's logo. Same video settings, resample disabled, and so on. When I rendered the lossless again and recompressed it I noticed that the exact same part of the video was lagging. No matter what I tried compressing it as, it would continue to lag. I have tried everything including updating my Lagarith codec and still the scene in the video lags.

Can anyone help me with this? Is there a way to prevent this from happening? Or am I simply s.o.l.?
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Re: Lagging lossless

Postby Kariudo » Sun May 17, 2009 9:35 pm

perhaps your computer isn't up to the task of playing back lossless encodes in real time
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Re: Lagging lossless

Postby macchinainterna » Sun May 17, 2009 9:37 pm

Probably. I've had the same computer for the last five years. XD;
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Re: Lagging lossless

Postby Zarxrax » Mon May 18, 2009 11:29 am

Try defragmenting your hard drive. And if it's a laptop or something, then the hard drive will surely be too slow. Not all desktop hard drives can handle it either.
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Re: Lagging lossless

Postby macchinainterna » Tue May 19, 2009 8:36 am

Okay I tried encoding it after defragmenting my hard drive and the lossless continues to lag at the exact same scene.
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Re: Lagging lossless

Postby LivingFlame » Tue May 19, 2009 12:20 pm

Is it a particularly high motion scene where there might be a higher bitrate that your computer just can't handle?

Also, you are working with a 7200 rpm drive, right? :P
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Re: Lagging lossless

Postby Tab. » Tue May 19, 2009 1:08 pm

Bye.
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Re: Lagging lossless

Postby macchinainterna » Wed May 20, 2009 9:48 am

LivingFlame wrote:Is it a particularly high motion scene where there might be a higher bitrate that your computer just can't handle?

Also, you are working with a 7200 rpm drive, right?


It could very well be. However this lagging only happens when I import the lossless into Vegas a second time then export it. If I simply take the lossless and encode it without importing it into Vegas for any reason, then the lagging doesn't happen. :?:

And all I can tell you is that I'm working on a five year old DELL p.o.s. XD;
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Re: Lagging lossless

Postby LittleAtari » Wed May 20, 2009 3:37 pm

macchinainterna wrote:
LivingFlame wrote:Is it a particularly high motion scene where there might be a higher bitrate that your computer just can't handle?

Also, you are working with a 7200 rpm drive, right?


It could very well be. However this lagging only happens when I import the lossless into Vegas a second time then export it. If I simply take the lossless and encode it without importing it into Vegas for any reason, then the lagging doesn't happen. :?:

And all I can tell you is that I'm working on a five year old DELL p.o.s. XD;

Try watching the encode on another computer or send it to someone that can. If it's still lagging, try a huffy codec for your lossless or uncompressed.
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Re: Lagging lossless

Postby macchinainterna » Wed May 20, 2009 4:34 pm

LittleAtari wrote:Try watching the encode on another computer or send it to someone that can. If it's still lagging, try a huffy codec for your lossless or uncompressed.


Actually a couple days ago ArashinomeAMV volunteered to watch the encode and said that it was lagging for him too at that scene. After that I did try using a huffy codec before to see if it would help, but it still lags.

That's when I decided to start this thread and see if anybody can help me.
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Re: Lagging lossless

Postby Zarxrax » Wed May 20, 2009 5:58 pm

It doesnt really matter if it lags...
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Re: Lagging lossless

Postby macchinainterna » Wed May 20, 2009 8:12 pm

Zarxrax wrote:It doesnt really matter if it lags...


True. My main purpose for fixing the problem was to simply fix my logo, which I am more than willing to let it slide seeing that my future projects will have the fixed version featured in them.

Thanks for all the help and advice, everyone.
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Re: Lagging lossless

Postby Qyot27 » Thu May 21, 2009 12:50 am

What happens if you try HuffYUV-YV12*? My comp is nearing 8 years old and it can play such files back fairly smoothly, depending on resolution and footage complexity.

Also more specifically known as YV12-mode ffvhuff. It's the implementation included in ffdshow (the choice to encode it requires ffdshow's VFW interface). My suggestion is to set it for Plane prediction, and to use the adaptive huffman tables option. Because of the differences with the normal HuffYUV, you'll have to use ffdshow to decode it.

Just make sure it's a recent build of ffdshow:
http://sourceforge.net/project/showfile ... _id=199416


To illustrate visually what I'm talking about here (I just found this image on the web since I didn't want to screenshot it myself - the only difference is that the screenshot is set for Median prediction rather than Planar; Median is slower but compresses better - similarly, Left prediction is even faster and compresses less):
http://img22.imageshack.us/my.php?image ... yuv8xe.png
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