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MP4 to GXF - Online Video Converter
Convert MP4 to GXF online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert MP4 to GXF
Drop MP4 video here or click to select
MP4
GXF (MPEG-2 / PCM)
About MP4 to GXF
Convert MP4 to GXF. MP4 pairs H.264 video with AAC audio in the ISO base media container. GXF is the Grass Valley server format for broadcast playout. Server metadata drops on export; the picture and sound carry over..
Why convert MP4 to GXF?
- Smaller files with GXF lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
MP4 vs GXF
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | No |
| Compression | lossy | lossy |
| Typical use | MP4 pairs H.264 video with AAC audio in the ISO base media container. | GXF is the Grass Valley server format for broadcast playout. |
When not to convert MP4 to GXF
- Skip GXF for archival masters: lossy compression discards detail, so keep the MP4 original.
- Keep a master copy: repeated exports stack small losses, so archive MP4 before batch GXF shares.
Limits
Starting point: MP4 - H.264 video with AAC audio in one file. H.264 has no alpha channel, so transparency is dropped. Server metadata drops on export; the picture and sound carry over. Encode GXF (MPEG-2 / PCM) from MP4 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 MP4 to GXF?
Drop your MP4 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.