Canon CRM Raw Movie file support #100
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Seems to be negative on CRM movie files
CRM movie raw images needs another formula for median. For regular files, median uses n_bits, for CRM files, there is additional data in CMP1 box.
CRM movie files uses the same CR3/BMFF structure. For each recorded frame, the frame is encoded by Crx codec and written as sample. So a CRM file with 2 seconds duration and 30 fps contains 60 samples inside trak 1. Each sample can independently be decoded. The order of trak boxes is different. The main (video frame) trak is the first one. We can use CCTP box to find correct trak id. The trak for CTMD is not listed in CCTP but it exists?!
cytrinox
added
enhancement
|
See also LibRaw/LibRaw#446 |
Closed
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This PR adds CRM support to rawler and dnglab.
Turns out that CRM is pretty much the same as CR3, except ordering of trak boxes. Each raw frame is encoded by Crx codec.
A single trak contains all the frames as BMFF samples and can be independently extracted.
fixes #97