Yes. MediaZilla fully supports 4K video uploads, in both SDR (Standard Dynamic Range) and HDR (High Dynamic Range).
Viewing 4K Content
If a video is uploaded in 4K, viewers can stream it in 4K on supported devices and browsers, including Safari on Mac.
The player hides quality options that the viewer's device can't play.
When downloads are enabled, recipients can also download the original 4K file.
HDR uploads are preserved, but playback depends on the viewer's device capabilities.
đ Learn more: How do I watch 4K content?
HDR Colour Correction
When an HDR10 or HLG source is played on a standard-range (SDR) display, MediaZilla applies colour correction automatically. Viewers on standard displays see a tone-mapped conversion that accurately represents your grade. There is nothing you or your viewers need to do.
This applies to videos uploaded from September 2026. To correct an older HDR video, use Replace and upload the same file again. This uses quota.
HDR Poster Frames
Poster frames captured from HDR videos receive the same colour correction as the video. The thumbnail that appears on your Share Link preview, social media card, and project view accurately represents the colour grade of the film.
If an HDR video's poster frame was set before this update, recapture it on that video (⎠â Settings â Poster Frame). Do this for each video you want to update.
đ Learn more: How do I set a video's poster frame?
Vertical and Rotated Footage
Videos shot vertically on a phone and rotated display their correct dimensions (portrait width and height) rather than the unrotated landscape dimensions. This applies to newly uploaded videos. To fix an older video, re-upload it with Replace.