Sembiance: samples

2025-05-14T15:02:58Z

samples

← Older revision		Revision as of 08:02, 14 May 2025
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			* Samples: {{DexvertSamples\|video/networkQRACRallyFMV}}

	This is a video format used for the cutscenes in [https://www.mobygames.com/game/27962/network-q-rac-rally/ the game].		This is a video format used for the cutscenes in [https://www.mobygames.com/game/27962/network-q-rac-rally/ the game].

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2024-09-18T14:04:38Z

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This is a video format used for the cutscenes in [https://www.mobygames.com/game/27962/network-q-rac-rally/ the game].

File header:
4 bytes - "DANI"
2 bytes - always 0x0503?
2 bytes - number of frames
2 bytes - width
2 bytes - height
4 bytes - suggested video buffer size
1 byte - bits per audio sample
1 byte - audio channels
2 bytes - sampling rate
4 bytes - always zero?

Then a palette chunk follows:
4 bytes - "CMAP"
4 bytes - palette size
N bytes - palette

In case of audio being present, it is stored all in the following chunk:
4 bytes - "SNDT"
4 bytes - audio size
N bytes - audio

Video data is stored in "DLTA" chunks with 32-bit chunk length. "ENDA" marker (without size) signals end of file.

=== Video compression ===
Video is split into 4x4 blocks and uses variable-length codes to signal block type. Those codes consist of the bits that are grouped into bytes and interspersed among data bytes.

The codes are:
* <code>0xxx</code> - pattern fill with 1-8 colours. For each pixel in the block a code is read telling which colour to pick. E.g. for 4-colour pattern it's two-bit code, for 1 colour it is no code at all, and for 7-colour code it is <code>00 010 011 100 101 110 111</code>;
* <code>10</code> - raw block
* <code>110</code> - skip block
* <code>1110</code> - row end marker (should appear after the last block in the row)
* <code>1111</code> - frame end marker (should appear after the last block instead of row end marker)

[[Category:Game Formats]]

Network Q RAC Rally FMV - Revision history

Sembiance: samples

Kostya: fill description