BT20: Difference between revisions
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Video frame payloads begin with the 4 ASCII characters 'BTIC'. | Video frame payloads begin with the 4 ASCII characters 'BTIC'. | ||
This is a simple intra-only delta compression codec. It codes UYVY data using vertical prediction, 6-bit deltas and an additional compression pass that removes repeats and replaces certain delta pairs with their codebook index. | |||
[[Category:Video Codecs]] | [[Category:Video Codecs]] | ||
[[Category:Video FourCCs]] | [[Category:Video FourCCs]] | ||
Latest revision as of 05:11, 13 September 2022
- FourCC: BT20
- Company: Conexant
- Samples: http://samples.mplayerhq.hu/V-codecs/BT20/
According to http://fourcc.org/ , BT20 is a "Codec optimised for realtime compression of YUV images." The binary decoder answers to the filename btvvc32.drv.
Strings seen in AVI file headers include:
- C:\PROGRAM FILES\EZCAP\CAPTURE.EXE -AVICAP32- MSVIDEO: AVerMedia InterCam Video Capture Driver, Version: 4.1.8.6
- C:\PROGRAM FILES\GV-VCP VIDEORECORDER\GVCAP.EXE -AVICAP32- MSVIDEO: Brooktree Bt848 Capture Driver, Version: 2.2.223.0
Video frame payloads begin with the 4 ASCII characters 'BTIC'.
This is a simple intra-only delta compression codec. It codes UYVY data using vertical prediction, 6-bit deltas and an additional compression pass that removes repeats and replaces certain delta pairs with their codebook index.