Video player seekbar thumbnail

[jsmits]

Hi!

I would like to add seekbar thumbnails to my online video player. I think these are called "sprites"!?!

Can I create such sprite images with "Thumbnail Maker"?

[admin]

Hello,

Please provide more details, or examples.
I didn't get the question.

[jsmits]

I figured it out. VTT files are used for these preview images in the player. And Video Thumbnail Maker is the perfect tool for generating such files and preview images. As a newbie, however, it wasn't that easy to figure out.


Video Thumbnail Maker doesn't support GPU decoding, does it?

[admin]

Video Thumbnail Maker doesn't support GPU decoding, does it?

VTM does support GPU decoding, why not?

[jsmits]

I see no indication that VTM is using my Nvidia 4090 to generate images from the videos. Neither with Crystal nor any other engine.

In the task manager, I only see my CPU being used.

[admin]

I see no indication that VTM is using my Nvidia 4090 to generate images from the videos. Neither with Crystal nor any other engine.

In the task manager, I only see my CPU being used.

Have you tried to add 100+ files and click the Magic button in VTM?
You may also try to use MSI Afterburner to see more details (consider creating animations to see the effect).

[jsmits]

I created 350 collages using the magic button. CPU is using about 80% (setting is 3/4) and GPU 0%

[admin]

Do you have same appearance?
Please make sure you are using the Ultimate engine.
Can I have a screenshot of your case?

gpu.png (19.28 KiB) Viewed 44 times

Another question is - are you on Virtual Machine?
Which NVidia driver version are you on?

[jsmits]

Ultimate is enabled. It is fast but all graphs empty (GPU). But CPU is going up.

.

Screenshot 2025-11-22 150536.png (325.81 KiB) Viewed 28 times

Screenshot 2025-11-22 151005.png (29.74 KiB) Viewed 27 times

[admin]

So, you have 2 video cards in your system, and it looks like VTM uses the first one.
I can change the algorithm to use the second (or the last) one in the list.
Meanwhile, a question — do you really need the CPU-embedded video card?
I would suggest disabling it in the BIOS, and that's it.