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Video lags

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Tommy Sewell
Video lags
on Aug 2, 2017 at 10:09:09 pm

Hello All,

I have had a problem with one specific video for a few months and am seeking answers. I have an unboxing which can be found here

and it starts to get choppy when I cut open the box and view the contents. I know the computer(s) I have been using aren't THE BEST and my Vegas is old but due to not enough funds can't upgrade, however I never had a problem like this before.

I use Sony Vegas Platinum 10

PC Specs
Class: AMD Phenom(tm) 9950 Quad-Core Processor
GeForce GT 730

I try to render as a MainConcept MP4
Stereo, AAC
Video: 29.970 fps, 1920x1080 Progressive, YUV, 15 Mbps
Pixel Aspect Ratio: 1.000

Or a Sony AVC

Audio: 192 Kbps, 48,000 Hz, 32 Bit, Stereo, AAC
Video: 29.970 fps, 1920x1080 Progressive, YUV, 8 Mbps
Pixel Aspect Ratio: 1.000

Tried with a variable Bitrate and Constant. Also tried rendering as a WMV
The clips have a FPS as 29.02 because I converted them from my Note 5 with VLC because it wouldn't open but the source files look great. Any help would be appreciated as I would like to have the video look good.

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Francois Pénzes
Re: Video lags
on Aug 4, 2017 at 12:51:06 am

Hi Tommy

If I am reading correctly, your original file that you dropped in Vegas has a 29.02 FPS. Vegas doesn't like that very much.

It's always trying to catch-up, hence the choppiness.

Try converting your file to a 29.970 FPS and that should do the trick. You can use Handbrake or any other decent converter.

VLC has a built in feature that does caching in order to deliver the output at a steady rate.

Never base the quality of your footage on the output from VLC.

Don't get me wrong, VLC is a great player, just not a good reference.

Cheers !

PC Win 10 Pro 64-bit 16gb Intel® Core™i7-2600k Quad Core 3.40GHz NVIDIA GEFORCE GTX 550 Ti
Cameras: Canon XF305 + Canon XH-A1

''When the cutting stops, the editing begins...''

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Steve Rhoden
Re: Video lags
on Aug 4, 2017 at 12:12:58 pm

The 29.02 FPS is the cause of your issues as Francois also mentioned,
Convert them first to 29.970 FPS

Steve Rhoden (Cow Leader)
Film Maker & VFX Artist.
Owner of Filmex Creative Media.
Samples of my Work and Company can be seen here:

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