Difference between revisions of "IVF"

From MultimediaWiki
Jump to navigation Jump to search
 
m (typo)
 
(7 intermediate revisions by 3 users not shown)
Line 1: Line 1:
* Extension: ivf
* Extension: ivf
* Samples: The test-vectors-* archives available here: https://chromium.googlesource.com/webm/vp8-test-vectors


IVF is a simple file format that transports raw VP8 data.
IVF is a simple file format that transports raw VP8 data.
Line 7: Line 8:
  bytes 0-3    signature: 'DKIF'
  bytes 0-3    signature: 'DKIF'
  bytes 4-5    version (should be 0)
  bytes 4-5    version (should be 0)
  bytes 6-7    unknown
  bytes 6-7    length of header in bytes
  bytes 8-11  codec FourCC (e.g., 'VP80')
  bytes 8-11  codec FourCC (e.g., 'VP80')
  bytes 12-13  width in pixels
  bytes 12-13  width in pixels
  bytes 14-15  height in pixels
  bytes 14-15  height in pixels
  bytes 16-23  unknown
  bytes 16-23  time base denominator
bytes 20-23  time base numerator
  bytes 24-27  number of frames in file
  bytes 24-27  number of frames in file
  bytes 28-31  unknown
  bytes 28-31  unused


The header is followed by a series of frames. Each frame consists of a 12-byte header followed by data:
The header is followed by a series of frames. Each frame consists of a 12-byte header followed by data:


  bytes 0-3    size of frame in bytes (not including the 12-byte header)
  bytes 0-3    size of frame in bytes (not including the 12-byte header)
  bytes 4-7    frame number
  bytes 4-11  64-bit presentation timestamp
bytes 8-11  unknown
  bytes 12..  frame data
  bytes 12..  frame data
== PC games using IVF files ==
* [https://www.mobygames.com/game/rogue-trooper-redux Rogue Trooper Redux]
* [https://www.mobygames.com/game/shantae-and-the-seven-sirens Shantae and the Seven Sirens]


[[Category:Container Formats]]
[[Category:Container Formats]]

Latest revision as of 18:05, 1 June 2020

IVF is a simple file format that transports raw VP8 data.

Multi-byte numbers of little-endian. An IVF file begins with a 32-byte header:

bytes 0-3    signature: 'DKIF'
bytes 4-5    version (should be 0)
bytes 6-7    length of header in bytes
bytes 8-11   codec FourCC (e.g., 'VP80')
bytes 12-13  width in pixels
bytes 14-15  height in pixels
bytes 16-23  time base denominator
bytes 20-23  time base numerator
bytes 24-27  number of frames in file
bytes 28-31  unused

The header is followed by a series of frames. Each frame consists of a 12-byte header followed by data:

bytes 0-3    size of frame in bytes (not including the 12-byte header)
bytes 4-11   64-bit presentation timestamp
bytes 12..   frame data

PC games using IVF files