- Extension
- .pgm
- .mtv
- Format
- Binary
- Binary
- Category
- Raster Image
- Video
- Developer
- Jef Poskanzer
- Xing Technology
- Description
- A PGM file is a grayscale image file saved in the portable gray map (PGM) format and encoded with one or two bytes (8 or 16 bits) per pixel. It contains header information and a grid of numbers that represent different shades of gray from black (0) to white (up to 65,536). PGM files are typically stored in ASCII text format, but also have a binary representation.
- 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/x-portable-graymap
- video/x-mtv
