WebM to GXF - Online Video Converter

Convert WebM to GXF online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.

Convert WebM to GXF

[+] Drop WebM video here or click to select WebM

Output format

GXF (MPEG-2 / PCM)

No transcoding (remux only)[i]

Mode[i]

Simple Advanced

Quality[i]

Resolution[i]

About WebM to GXF

Convert WebM to GXF. WebM pairs VP9 video with Opus audio and supports an alpha channel. GXF is the Grass Valley server format for broadcast playout. Server metadata drops on export; the picture and sound carry over..

Why convert WebM to GXF?

Smaller files with GXF lossy compression.
Keep animation and transparency where supported.
Private, no upload - runs in your browser.

WebM vs GXF

Animation	Yes	Yes
Transparency	Yes	No
Compression	lossy	lossy
Typical use	WebM pairs VP9 video with Opus audio and supports an alpha channel.	GXF is the Grass Valley server format for broadcast playout.

When not to convert WebM to GXF

Skip GXF for archival masters: lossy compression discards detail, so keep the WebM original.
Flatten transparency first: GXF has no alpha channel, so composite WebM over a background color.

Limits

Starting point: WebM - VP9 video with Opus audio and alpha support. Apple editors accept it unevenly; keep MP4 for editing round-trips. Server metadata drops on export; the picture and sound carry over. Encode GXF (MPEG-2 / PCM) from WebM at a bitrate near the source, and confirm the audio track before converting.

How conversion works

Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.

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FAQ

How do I convert WebM to GXF?

Drop your WebM file onto this page, choose quality and codec settings, then click Convert. The result downloads as GXF instantly. All processing runs in your browser.

What codec is used for GXF?

The default codec for GXF is MPEG-2 / PCM. You can change the video and audio codec in Advanced mode.

How do you store my files?

We do not store any processed videos. All conversion happens entirely in your browser using FFmpeg WASM.