User Manual

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OPTIMIZATION
In general, video mixing is much heavier in computer resources than audio mixing so certain
optimization may help performance, especially when dealing with full frame rate video (such as
DVD in high definition).
There are several parameters which determine the speed with which VirtualVinyl
decompresses and displays video content – the size of memory present on your video card,
the speed of the graphics processor (GPU), the speed of the main central processor (CPU),
and the access speed of the hard disk.
Another parameter which largely influences performance is the type of file. An MPEG1 format
file is much faster to decompress than a VOB format file. In a similar way, a file with a 320x240
resolution is much faster to decompress than a file with a 720x576 resolution.
By default, VirtualVinyl decompresses only the content which is visible in the video mix
window. This means that if there are two clips which are playing but only one is visible,
VirtualVinyl will only decompress the video which is visible. If both video files are shown in the
mix window, then VirtualVinyl will decompress both. This makes the software perform quicker
and also allows it to perform better on slower machines. However, this may result in small jolts
at the time of transitions. If the computer configuration is sufficiently powerful, we recommend
checking the “Decode while hidden” box in the “Video” settings in the “Config” menu to obtain
more fluid transitions.
Also, if using a full-screen output to display the video mix, it is more effective to use a graphics
card which has two outputs, than using two separate cards.
And finally, we recommend the use of an output resolution no greater than the resolution of the
video files. If using higher resolutions, low-resolution content will not look any better but will be
using more computer resources. A resolution of 800x600 should be sufficient if using high-
quality DVD video.