Best AI Video Generator for 4K Videos in 2026 (Full Test)

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Youri van Hofwegen·19.5K views · Jun 2026

Clips

1. 0:500:42Text-to-video generation with Veo 3.1The creator demonstrates generating an 8-second 4K video of a boxer using a text prompt and the Veo 3.1 model on OpenArt.OpenArt· Text to Video
2. 1:570:23Text-to-video generation with LTX 2.3The LTX 2.3 model is shown generating a cinematic 4K video from the same text prompt used in the previous test.OpenArt· Text to Video
3. 3:450:44Image-to-video with start frame in Veo 3.1The user uploads a starting frame image and a prompt to guide the Veo 3.1 model in generating a consistent 4K video sequence.OpenArt· Image to Video
4. 4:420:23Image-to-video with start frame in LTX 2.3The LTX 2.3 model is shown processing a starting frame image to generate a high-resolution video with slow-motion effects.OpenArt· Image to Video
5. 6:430:30Multi-image reference video generation with Veo 3.1The demonstration shows how to use a character sheet and an object reference image simultaneously in Veo 3.1 to maintain visual consistency.OpenArt· Image to Video
6. 8:090:45Reference image workflow with SeaDance 2.0The SeaDance 2.0 model is shown generating a 720p video using a character sheet, boxing glove reference, and a starting frame.OpenArt· Image to Video
7. 9:200:45Upscaling 720p video to 4K in OpenArtThe creator demonstrates the 'Upscale Video' tool in OpenArt to transform a low-resolution SeaDance generation into a 4K final product.OpenArt· AI Video Upscaler