Project crop_rec_4k

crop_rec module with higher resolutions (4K, 1080p48 etc):

5D3:

• 1920x960 @ 50p (both 1:1 crop and full-frame - 3x3 pixel binning)
• 1920x800 @ 60p (same as above)
• 1920x1080 @ 45p and 48p (3x3 binning)
• 1920x1920 @ 24p (1:1 square crop)
• 3072x1920 @ 24p (1:1 crop)
• 3840x1600 @ 24p (1:1 crop)
• 4096x2560 @ 12.5p (1:1 crop)
• 4096x1440 @ 25p (1:1 crop)
• Full-resolution LiveView: 5796x3870 at 7.4 fps (128ms rolling shutter).
• Continuous: 3072x1308 @ 24p, 1920x1080 @ 45p, 1920x960 @ 50p, 1920x800 @ 60p, 4096x2560 @ 8p, 5796x3870 @ 5p.

EOSM, 650D, 700D, 100D:

• 1736x696 @ 50/60p with 3x3 pixel binning (actually column binning / line skipping)
• Lossless compression: 1736x976 @ 24p continuous (this is the maximum 16:9 resolution with 3x3 sampling)

6D:

• 1824x634 @ 50/60p with 3x3 pixel binning (actually column binning / line skipping)
• Lossless compression: 1824x1026 @ 24p [continuous?] (this is the maximum 16:9 resolution with 3x3 sampling)

Notes:

• It's quite bleeding edge (expect bugs)
• Includes lossless compression for MLV (mlv_lite/mlv_play) and DNG (silent/pic_view)
• Includes lua_fix and dynamic-my-menu
• You will generally need to use the (non-realtime) preview from the raw recording module.
• Setting the preview to Frozen LV will give sligthly better recording times.
• Modes with higher vertical resolution will have real-time preview only for the top of the frame.
• Modes with higher horizontal resolution will have the preview completely broken.
• Centered x5 zoom will show either a cropped real-time preview, or a slow preview with correct framing (half-shutter to toggle).
• mlv_lite has lossless compression, H.264 proxy and experimental sound recording via mlv_snd
• mlv_rec works too, but without lossless compression

This is also the "de facto" bleeding edge branch, with other experimental stuff being tested here.