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VPX1 - Revision history
2026-04-10T09:41:55Z
Revision history for this page on the wiki
MediaWiki 1.39.5
https://wiki.multimedia.cx/index.php?title=VPX1&diff=16023&oldid=prev
Sembiance: samples
2025-05-14T15:11:36Z
<p>samples</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 08:11, 14 May 2025</td>
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<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* Samples: {{DexvertSamples|video/vpx1VideoPackage}}</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Company: reLine</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Company: reLine</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Extension: vpx</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Extension: vpx</div></td></tr>
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Sembiance
https://wiki.multimedia.cx/index.php?title=VPX1&diff=15803&oldid=prev
Kostya: fill format description
2024-09-17T16:19:29Z
<p>fill format description</p>
<p><b>New page</b></p><div>Company: reLine<br />
Extension: vpx<br />
<br />
This a video format which starts with a 110-byte string describing what this format is and who developed it.<br />
<br />
Header:<br />
110 bytes - essentially a copyright string<br />
4 bytes - "HEAD"<br />
6 bytes - do not seem to matter<br />
2 bytes - video width<br />
2 bytes - video height<br />
2 bytes - frames per second<br />
2 bytes - audio rate<br />
<br />
Then chunks with various payload follow, some of them have explicit size, others do not:<br />
* <code>COLS</code> - palette (768 bytes, no chunk size present)<br />
* <code>SOUN</code> - audio data (size present)<br />
* <code>CODE</code> - frame tile types, implicit size of one nibble per 8x8 block (i.e. one byte per 128 pixels)<br />
* <code>VIDE</code> - frame colour values<br />
<br />
=== Video coding ===<br />
Frame is split into 8x8 tiles and organised in a way allowing easier decoding of down-scaled version of the stream. There are the following tile types known:<br />
* 0 - skip<br />
* 1 - 4x4 block scaled to 8x8<br />
* 2 - 4x8 block scaled to 8x8, for scalability reasons all even rows are coded before odd rows<br />
* 4 - fill block<br />
<br />
[[Category:Game Formats]]<br />
[[Category:Video Codecs]]</div>
Kostya