VQA - Revision history

Andrew Dream: /* VQHD chunk ("VQa HeaDer" ???) */

2025-11-26T07:21:41Z

VQHD chunk ("VQa HeaDer" ???)

← Older revision		Revision as of 00:21, 26 November 2025
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	* bit 0 denotes whether the VQA has a soundtrack or not.		* bit 0 denotes whether the VQA has a soundtrack or not.
	* (1 = Has sound, 0 = No sound)		* (1 = Has sound, 0 = No sound)
	* bit 2 denotes whether this movie is an overlay on the background ~~video~~.		* bit 2 denotes whether this movie is an overlay on the background movie.
	* (1 = Yes, 0 = No)		* (1 = Yes, 0 = No)
	Movie with bit 2 may play separately, but need apply VPTR\VPRZ chunks		Movie with bit 2 may play separately, but need apply VPTR\VPRZ chunks

Andrew Dream: /* CBP? chunk ("CodeBook Part" ???) */

2025-11-25T12:27:24Z

CBP? chunk ("CodeBook Part" ???)

← Older revision		Revision as of 05:27, 25 November 2025
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	chunks are used in Red Alert.		chunks are used in Red Alert.

	'''NOTE:''' If the chunks are ~~CBFZ~~, first you need to append CBParts of them and		'''NOTE:''' If the chunks are CBPZ, first you need to append CBParts of them and
	then decompress the data, NOT decompress each chunk individually.		then decompress the data, NOT decompress each chunk individually.

Andrew Dream: /* VQHD chunk ("VQa HeaDer" ???) */

2025-11-25T12:19:31Z

VQHD chunk ("VQa HeaDer" ???)

← Older revision		Revision as of 05:19, 25 November 2025
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	implies how many parts the new block lookup table is split into.		implies how many parts the new block lookup table is split into.
	In C&C and RA it is always 8. When CBParts is 0, and movie have		In C&C and RA it is always 8. When CBParts is 0, and movie have
	CBP? chunks, then need see CIND chunk.		CBP? chunks, then need see FINF or CIND chunk.

	Colors indicates the maximum number of colors used by the VQA.		Colors indicates the maximum number of colors used by the VQA.

Andrew Dream: /* VQHD chunk ("VQa HeaDer" ???) */

2025-11-25T11:44:27Z

VQHD chunk ("VQa HeaDer" ???)

← Older revision		Revision as of 04:44, 25 November 2025
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	MaxCBFZSize tells you the size of the largest CBFZ chunk, in bytes.		MaxCBFZSize tells you the size of the largest CBFZ chunk, in bytes.
			In old VQAs this value may be 0.

	Following the chunk data are the sub-chunks.		Following the chunk data are the sub-chunks.

Andrew Dream: /* VQHD chunk ("VQa HeaDer" ???) */

2025-11-25T11:38:26Z

VQHD chunk ("VQa HeaDer" ???)

← Older revision		Revision as of 04:38, 25 November 2025
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	* bit 2 denotes whether this movie is an overlay on the background video.		* bit 2 denotes whether this movie is an overlay on the background video.
	* (1 = Yes, 0 = No)		* (1 = Yes, 0 = No)
	* Movie with bit 2 may play separately, but need apply VPTR\VPRZ chunks		Movie with bit 2 may play separately, but need apply VPTR\VPRZ chunks
	* to "Null" Vector Pointer Table (filled by zeros) for each frame.		to "Null" Vector Pointer Table (filled by zeros) for each frame.

	If NumFrames of background movie less than NumFrames of overlay movie		If NumFrames of background movie less than NumFrames of overlay movie
	* then background movie will be repeat, while will not finish overlay movie.		then background movie will be repeat, while will not finish overlay movie.

	Width is usually 320, Height is usually 156 or 200 although one movie in		Width is usually 320, Height is usually 156 or 200 although one movie in

Andrew Dream: /* VQHD chunk ("VQa HeaDer" ???) */

2025-11-25T11:37:14Z

VQHD chunk ("VQa HeaDer" ???)

← Older revision		Revision as of 04:37, 25 November 2025
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	short Colors; /* Maximum number of colors used in VQA */		short Colors; /* Maximum number of colors used in VQA */
	short MaxBlocks; /* Maximum number of image blocks */		short MaxBlocks; /* Maximum number of image blocks */
	short OffsetX; /* Offset X position in background ~~video~~ */		short OffsetX; /* Offset X position in background movie */
	short OffsetY; /* Offset Y position in background ~~video~~ */		short OffsetY; /* Offset Y position in background movie */
	short MaxVPT?Size; /* Max. VPT? (VPTZ, VPRZ) size */		short MaxVPT?Size; /* Max. VPT? (VPTZ, VPRZ) size */
	short Freq; /* Sound sampling frequency */		short Freq; /* Sound sampling frequency */

Andrew Dream: /* VQHD chunk ("VQa HeaDer" ???) */

2025-11-25T11:36:39Z

VQHD chunk ("VQa HeaDer" ???)

← Older revision		Revision as of 04:36, 25 November 2025
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	short Colors; /* Maximum number of colors used in VQA */		short Colors; /* Maximum number of colors used in VQA */
	short MaxBlocks; /* Maximum number of image blocks */		short MaxBlocks; /* Maximum number of image blocks */
	~~long~~ ~~Unknown1~~; /* ~~Always 0 ???~~ */		short OffsetX; /* Offset X position in background video */
	short ~~Unknown2~~; /* ~~Some kind of~~ size ~~???~~ */		short OffsetY; /* Offset Y position in background video */
			short MaxVPT?Size; /* Max. VPT? (VPTZ, VPRZ) size */
	short Freq; /* Sound sampling frequency */		short Freq; /* Sound sampling frequency */
	char Channels; /* Number of sound channels */		char Channels; /* Number of sound channels */
	char Bits; /* Sound resolution */		char Bits; /* Sound resolution */
			long Unknown1; /* Always 0 ??? */
			short Unknown2; /* 0 in old VQAs, 4 in HiColor ones ??? */
			long MaxCBFZSize; /* Max. CBFZ size (in old VQAs usually is 0) */
	long Unknown3; /* Always 0 ??? */		long Unknown3; /* Always 0 ??? */
	~~short Unknown4; /* 0 in old VQAs, 4 in HiColor ones ??? */~~
	~~long MaxCBFZSize; /* 0 in old VQAs, max. CBFZ size in HiColor */~~
	~~long Unknown5; /* Always 0 ??? */~~
	}		}

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	* 3 - Lands of Lore III (?), Blade Runner (?), Nox and Tiberian Sun. These VQAs are HiColor (15 bit).		* 3 - Lands of Lore III (?), Blade Runner (?), Nox and Tiberian Sun. These VQAs are HiColor (15 bit).

	Flags most probably contain some flags. I ~~only~~ know that bit 0 (LSB)		Flags most probably contain some flags. I know that bit 0 (LSB) and 2 (Overlay)
	* denotes whether the VQA has a soundtrack or not.		* bit 0 denotes whether the VQA has a soundtrack or not.
	* (1 = Has sound, 0 = No sound)		* (1 = Has sound, 0 = No sound)
			* bit 2 denotes whether this movie is an overlay on the background video.
			* (1 = Yes, 0 = No)
			* Movie with bit 2 may play separately, but need apply VPTR\VPRZ chunks
			* to "Null" Vector Pointer Table (filled by zeros) for each frame.

			If NumFrames of background movie less than NumFrames of overlay movie
			* then background movie will be repeat, while will not finish overlay movie.

	Width is usually 320, Height is usually 156 or 200 although one movie in		Width is usually 320, Height is usually 156 or 200 although one movie in
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	CBParts denotes how many frames use the same lookup table. It also		CBParts denotes how many frames use the same lookup table. It also
	implies how many parts the new block lookup table is split into.		implies how many parts the new block lookup table is split into.
	In C&C and RA it is always 8.		In C&C and RA it is always 8. When CBParts is 0, and movie have
			CBP? chunks, then need see CIND chunk.

	Colors indicates the maximum number of colors used by the VQA.		Colors indicates the maximum number of colors used by the VQA.
	The HiColor VQAs have this set to 0, while the old movies have		The HiColor VQAs have this set to 0, while the old movies have
	256 or less in here.		256 or less in here.

			Offset X and Offset Y uses only when there is bit 2 in the flags.
			Usually uses chunk CLIP too, where the width and height of the
			background movie are specified.

			MaxVPT?Size tells you the size of the largest VPTZ or VPRZ chunk, in bytes.

	Freq is usually 22050 Hz. Note that version 1 movies can have this set		Freq is usually 22050 Hz. Note that version 1 movies can have this set
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	which case 8 bits are assumed.		which case 8 bits are assumed.

	MaxCBFZSize ~~is a new entry, specific to the HiColor VQAs. It~~ tells		MaxCBFZSize tells you the size of the largest CBFZ chunk, in bytes.
	you the size of the largest CBFZ chunk, in bytes.

	Following the chunk data are the sub-chunks.		Following the chunk data are the sub-chunks.

Sembiance: samples

2025-05-14T15:11:56Z

samples

← Older revision		Revision as of 08:11, 14 May 2025
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	* Company: [[Westwood Studios]]		* Company: [[Westwood Studios]]
	* Samples: [http://samples.mplayerhq.hu/game-formats/vqa/ http://samples.mplayerhq.hu/game-formats/vqa/]		* Samples: [http://samples.mplayerhq.hu/game-formats/vqa/ http://samples.mplayerhq.hu/game-formats/vqa/]
			* Samples: {{DexvertSamples\|video/westwoodStudiosVQA}}

	VQA stands for Vector Quantized Animation and is a FMV format used in a number of computer games by Westwood Studios.		VQA stands for Vector Quantized Animation and is a FMV format used in a number of computer games by Westwood Studios.

Madmoose: /* The CBFZ chunks */

2011-08-09T10:05:39Z

The CBFZ chunks

← Older revision		Revision as of 03:05, 9 August 2011
Line 790:		Line 790:
	As in the old CBFZ chunks, these pixels make up the block lookup table		As in the old CBFZ chunks, these pixels make up the block lookup table
	(also called a codebook). The a (alpha) value is used in Blade Runner in		(also called a codebook). The a (alpha) value is used in Blade Runner in
	overlay videos.to indicate a transparent pixel.		overlay videos to indicate a transparent pixel.

	=== The VPTR chunks===		=== The VPTR chunks===

Madmoose: /* The VPTR chunks */ Document Blade Runner alpha-prefixes.

2011-08-09T07:55:59Z

The VPTR chunks: Document Blade Runner alpha-prefixes.

← Older revision		Revision as of 00:55, 9 August 2011
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	011 - Write block (Val & 0x1fff).		011 - Write block (Val & 0x1fff).

			100 - Same as 011 but skip pixels with alpha bit set.

	101 - Write block (Val & 0x1fff) Count times. Count is the next		101 - Write block (Val & 0x1fff) Count times. Count is the next
	byte from the VPTR chunk.		byte from the VPTR chunk.

			110 - Same as 101 but skip pixels with alpha bit set.

	After this, you take the next short int and repeat the above process.		After this, you take the next short int and repeat the above process.

			Prefixes 100 and 110 are used in Blade Runner for overlay videos.

	Every row of blocks is processed individually of others.		Every row of blocks is processed individually of others.
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	Note that the above implies an absolute maximum of 8192 blocks (0x1fff+1).		Note that the above implies an absolute maximum of 8192 blocks (0x1fff+1).
	~~Also note that prefix 100 is unused (at least in Tiberian Sun) but could~~
	~~be used somewhere else...?~~

	As for the VPRZ chunks, these are just VPTR chunks compressed with		As for the VPRZ chunks, these are just VPTR chunks compressed with
	the standard Format80 algorithm.		the standard Format80 algorithm.


	=== The modified Format80 scheme ===		=== The modified Format80 scheme ===