WebM (VP9 video plus Opus audio) is the web's open video format: great quality per megabyte, royalty free, and YouTube's preferred upload codec.
Editors that export WebM:
- DaVinci Resolve: yes, right on the Deliver page. Pick WebM in the format dropdown. - Shotcut (free): native WebM export with full control over VP9 settings. - Kdenlive (free): WebM profiles built in. - FFmpeg (free): the reference implementation. Total control, zero interface. - Premiere Pro: awkward. Native WebM export was removed years ago. Use Adobe Media Encoder with the free fnord WebM plugin, or export ProRes and convert with FFmpeg. - Shutter Encoder (free): VP9 presets with a real interface. Sources: FFmpeg, HandBrake Use WebM when file size matters: web embeds, Discord sharing, HTML5 video. Use H.264 when compatibility matters: clients, phones, everything else. And when the finished video needs to become vertical clips for every platform, ReelCut handles the clipping at $9.99 one-time per video.