Theora to GXF - Online Video Converter
Convert Theora to GXF online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
About Theora to GXF
Convert Theora to GXF. Theora is Xiph's open video codec paired with Vorbis audio. GXF is the Grass Valley server format for broadcast playout. Server metadata drops on export; the picture and sound carry over..
Why convert Theora to GXF?
- Smaller files with GXF lossy compression.
- Keep animation and transparency where supported.
- Private, no upload - runs in your browser.
Theora vs GXF
| Animation | Yes | Yes |
|---|---|---|
| Transparency | No | No |
| Compression | lossy | lossy |
| Typical use | Theora is Xiph's open video codec paired with Vorbis audio. | GXF is the Grass Valley server format for broadcast playout. |
When not to convert Theora to GXF
- Skip GXF for archival masters: lossy compression discards detail, so keep the Theora original.
- Keep a master copy: repeated exports stack small losses, so archive Theora before batch GXF shares.
Limits
Starting point: Theora - Theora is Xiph's open video codec paired with Vorbis audio. Ogg multiplexing quirks can offset sync; verify after conversion. Server metadata drops on export; the picture and sound carry over. Encode GXF (MPEG-2 / PCM) from Theora 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.