The graphic card is the most important piece of hardware to consider for using Video-Stitch.

What to consider ?

You first should have a NVidia card. It is mandatory, as Video-Stitch relies on the power of the NVidia CUDA framework. The graphic card’s GPU should achieve compute capability 1.3 or better, which is the case of all CUDA compatible cards nowadays. The most important characteristics to look at when considering a graphic card for Video-Stitch are :

Graphic memory

The memory of the GPU card is very important. If you want to stitch large videos, you’ll need a card with lots of memory. Don’t worry, you can have a 4GB card with less than 100€ nowadays ! See our reference table to find out of how much graphic memory !
Some high end graphic cards come with multiple GPUs. These cards behave just like a multiple GPU setup : the amount of memory that Video-Stitch can use is the ‘per GPU’ graphic memory ie: the GeForce GTX690 advertised as a 4Gb card, offers 2Gb per GPU and will only allow stitching what 2Gb can hold.

CUDA cores ? The more, the faster !

And speed up is roughly linear. If you have 1500 cores on your card, you will get about 5x faster processing than with a 300 cores. Also almost every card NVidia card should work, we have selected 3 graphics card to give you an idea of what to look for if you plan to buy a new one :

GT 640 (4Gb version)

A extremely affordable card with plenty of VRAM. It’s the best card to start, and you’ll be able to do a lot with it ! Buy it through amazon
  • CUDA cores : 384
  • Graphic memory : 4 Gb
  • Price : $125
Estimated max. stitch size 8000x4000?

GTX670 (4Gb version)

Looking for the best speed/price you can have ? This is it ! With 1344 cores, it will you’ll love to seek in Video-Stitch and have a live result. Buy it through amazon
  • CUDA cores : 1334
  • Graphic memory : 4 Gb
  • Price : $450
Estimated max. stitch size 8000x4000?

GTX Titan

You don’t want to make any compromises ? The GTX Titan is the most powerful graphic card available to date. This is the best card you can offer to Video-Stitch. You’ll be able to stitch ultra high resolution video, such at an astonished speed. Buy it through amazon
  • CUDA cores : 2688
  • Graphic memory : 6Gb
  • Price : ~ $1549
Estimated max. stitch size 10000x5000?

Memory usage

How large input/output image size Video-Stitch can process depends on how much memory is available, we have tested various cards with footage from various size. Contact us if the following data is not relevant to you.
Graphic memory used graphic memory (MB) * nb inputs input (px) output (px) camera
4Gb (GT640) 2934 Mb 4 3664 x 2748 8000 x 4000 iStar
4Gb (GT640) 3975 Mb 4 3664 x 2748 9600 x 4800 iStar
1Gb (GTX650) 928 Mb 6 1920 x 1440 4000 x 2000 6x GoPro Hero3
4Gb (GT640) 2037 Mb 6 1920 x 1440 5400 x 2700 6x GoPro Hero3
1Gb (GTX650) 897 Mb 6 1200 x 960 4000 x 2000 6x GoPro Hero2
4Gb (GT640) 3861 Mb 6 3840 x 2880 8000 x 4000 6x GoPro Hero2 (timelpase)