Everything RenderAlpha accepts and exports, with the limits that apply. These numbers come from the live product settings.
Input
Accepted files
MP4, MOV, WebM, GIF
Maximum file size
95 MB per upload
Maximum video length
60 seconds per run
Maximum resolution
1920 px on the longest side
Longer videos
Pick the part you need on the timeline, then process the next part in another run.
Output
Transparent WebM
VP9 video with an alpha channel (partial transparency), up to 60 seconds
ProRes 4444
.mov with an alpha channel, up to 10 seconds
Transparent GIF
Binary transparency only (each pixel fully transparent or fully opaque), scaled to at most 720 px on the longest side; soft edges are blended with an edge color you pick
MP4 with a new background
Solid color or your own image; plays everywhere
Watermark
None on any export
Not offered
HEVC with alpha, PNG sequence, animated WebP, still-image background removal
Where the files play
Transparent WebM
Chrome, Firefox, Edge and OBS. Safari does not render WebM alpha and shows a black background.
ProRes 4444
Premiere Pro, After Effects, Final Cut Pro and DaVinci Resolve. Not played by browsers.
GIF
Chat apps, sticker uploads and nearly every browser, with hard edges only
Credits and preview
Cost
1 credit per second of video (rounded, minimum 1); 1 credit per uploaded GIF
Credit packs
One-time purchase, credits never expire; from $6.99 for 60 credits
Free preview
One frame of your own clip, 3 per day before signing in, 20 per day after signing in with any frame you pick. It is a preview, not the finished video.