How to convert a .SIB file online
Three steps, all tab.
Open your file
Drop your .SIB file and every video, audio and subtitle track inside is listed with its codec, resolution, frame rate and language.
Preview
See frames from across your .SIB file before you convert, even when your browser can't play the codec inside.
Convert
Pick MP4, WEBM or MP3, or repack to MKV without re-encoding. Play the result right here, then download it.
What is a .SIB file?
Everything worth knowing about Sibelius Music Notation File.
A SIB file is a music score (sheet music) created in Sibelius, the notation software owned by Avid. It stores written notation (notes, staves, dynamics, layout), not recorded audio. Open it in Sibelius on Windows or macOS; there is no reliable free third-party app that reads the native format directly.
Programs that open .SIB files
- Windows
- Sibelius / Sibelius Ultimate, Sibelius First
- macOS
- Sibelius / Sibelius Ultimate
| Full name | Sibelius Music Notation File |
|---|---|
| Developer | Avid Technology (originally Sibelius Software, founded by Ben & Jonathan Finn) |
| First released | 1993 (Sibelius for Acorn); Windows/Mac from 1998; acquired by Avid in 2006 |
| Category | Audio & Video |
| MIME type | application/octet-stream |
Related viewers
Other free tools to open and preview your files.
Is my .SIB file uploaded to a server?
No. Your .SIB file is converted for you. The converted file is created in memory,.
Why is conversion slower than desktop software?
Browsers give web pages a single CPU core for this kind of work and no hardware video encoder. Short clips convert in seconds; for long 4K films a desktop app like HandBrake is faster. Use Start and Length to convert just the part you need.
Which output format should I pick?
MP4 plays on every phone, TV and browser. WEBM is an open format that's great for the web. MP3 keeps only the sound. MKV (no re-encode) is instant and lossless, but only changes the container.
Can I keep all audio tracks and subtitles?
The MKV (no re-encode) option copies every track as-is. MP4 and WEBM keep the first video and audio track, which is what most players use.
Why can't some files be converted?
Files protected with DRM (for example purchased iTunes .m4p songs or some .wmv rentals) are encrypted. We can show what's inside, but nobody can convert them without the key.
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