- Extension
- .g4
- .mtv
- Format
- Binary
- Binary
- Category
- Fax
- Video
- Developer
- Computer Fax Systems (CFS)
- Xing Technology
- Description
- Group 4 (G4) used for black and white lossless compression to maintain high-quality images, commonly used in TIFF format compression by fax machines. A picture is seen as black dots and lines on a blank page; the fewer the dots and lines are, the lesser the file size.
- Video format used by various Chinese MP4 portable video players; contains a 512-byte file header and a series of images that are displayed during MP3 playback; similar to a .AMV file, but uses slightly different formatting.
- MIME Type
- image/g4fax
- video/x-mtv
