Noctropolis VID - Revision history

VAG: add another game

2012-02-20T21:47:42Z

add another game

← Older revision		Revision as of 14:47, 20 February 2012
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	* Samples: '''TODO'''		* Samples: '''TODO'''

	VID is an FMV format ~~used~~ in the computer game [http://www.mobygames.com/game/dos/noctropolis Noctropolis]. Uses basic [[RLE]] compression.		VID is an FMV format first appeared in the computer game [http://www.mobygames.com/game/dos/noctropolis Noctropolis]. Uses basic [[RLE]] compression.

	A file consists of a header and a number of frame chunks. All numbers are little endian.		A file consists of a header and a number of frame chunks. All numbers are little endian.
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	Same as 0x7C, but no sync/frequency fields.		Same as 0x7C, but no sync/frequency fields.

			== Games Using VID ==

			* [http://www.mobygames.com/game/dos/noctropolis Noctropolis]
			* [http://www.mobygames.com/game/synnergist Synnergist]

	[[Category:Game Formats]]		[[Category:Game Formats]]
	[[Category:Video Codecs]]		[[Category:Video Codecs]]
	[[Category:Formats missing in FFmpeg]]		[[Category:Formats missing in FFmpeg]]

VAG: typos

2012-02-20T21:36:02Z

typos

← Older revision		Revision as of 14:36, 20 February 2012
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	+ 7 s16 Width -- frame width and height		+ 7 s16 Width -- frame width and height
	+ 9 s16 Height		+ 9 s16 Height
	+ B s16 Unknown -- ~~releated~~ to playback speed?		+ B s16 Unknown -- related to playback speed?
	+ D s16 Rate -- playback rate (?)		+ D s16 Rate -- playback rate (?)

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	=== 0x01 - Interframe ===		=== 0x01 - Interframe ===

	u16 sync value, followed by RLE-compressed raster. Version 2 movies has extra zero byte after ~~this~~ (if not ended permaturely by a stop-code.) Decompression algorithm:		u16 sync value, followed by RLE-compressed raster. Version 2 movies has extra zero byte after it (if not ended permaturely by a stop-code.) Decompression algorithm:

	while frame is not complete		while frame is not complete

VAG at 13:08, 6 August 2011

2011-08-06T13:08:36Z

New page

: ''See also [[VID]]''

* Extensions: vid
* Company: Flashpoint Productions, Inc.
* Year: 1994
* Samples: '''TODO'''

VID is an FMV format used in the computer game [http://www.mobygames.com/game/dos/noctropolis Noctropolis]. Uses basic [[RLE]] compression.

A file consists of a header and a number of frame chunks. All numbers are little endian.

== File header ==

+ 0 s8 Signature[4] -- "VID"
+ 4 s8 Version -- usually 2
+ 5 s16 Frames -- number of video frames (not chunks!)
+ 7 s16 Width -- frame width and height
+ 9 s16 Height
+ B s16 Unknown -- releated to playback speed?
+ D s16 Rate -- playback rate (?)

== Frame chunks ==
Each chunk begins with a byte chunk type then followed by payload of variable length.

=== 0x00 - Intraframe ===

u16 sync value, followed by Width * Height frame raster

=== 0x01 - Interframe ===

u16 sync value, followed by RLE-compressed raster. Version 2 movies has extra zero byte after this (if not ended permaturely by a stop-code.) Decompression algorithm:

while frame is not complete
len = next byte of input
if len is 0 finish
if high bit of len is set
leave (len & 0x7F) pixels unchanged
else
draw next (len) pixels

=== 0x02 - Palette ===

256 6-bit [[RGB]] [[DAC]] triplets.

=== 0x03 - RLE Intraframe ===

Same as 0x01, but no stop-codes and instead of skipping pixels, fill them with the next byte of input.

=== 0x04 - Partial Interframe ===

Same as 0x01, but has an extra u16 value after the sync field denotes how many horizontal lines to skip before start of decoding.

=== 0x7C - Audio Start ===

u16 sync, followed by u8 sampling frequency in SoundBlaster [[VOC]] format, then followed by u16 size of data and corresponding amount of actual [[PCM]] data in Mono, 8-bit Unsigned format.

=== 0x7D - Audio Continue ===

Same as 0x7C, but no sync/frequency fields.

[[Category:Game Formats]]
[[Category:Video Codecs]]
[[Category:Formats missing in FFmpeg]]