Y4M converter
Convert Y4M files to 33 other formats, or turn 21 other formats into Y4M. Everything runs in your browser — drop a file in and pick where it should end up.
Drop your Y4M files here
or browse your device · paste with Ctrl+V
Accepts .y4m. Choose any output format from the menu on each row.
Your files never leave this device — there is no upload and no server to delete them from.
Y4M
YUV4MPEG2Completely uncompressed raw frames behind a tiny text header. Used for codec testing and lossless intermediates; the files are enormous.
- Extension
- .y4m
- MIME type
- video/x-yuv4mpeg2
- Compression
- Uncompressed
- Specification
- Open
- Readable directly in your browser.
- Can be written directly in your browser.
- 33 outgoing and 21 incoming conversions available.
- 01
Add Y4M files
Drop them on the box above. Batches are fine — each file gets its own row and its own settings.
- 02
Pick an output format
The menu on each row lists every format this file can become, grouped by category and searchable.
- 03
Convert and save
Everything happens locally. Download the files individually, or grab the whole batch as a ZIP.