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PkmX
HDR video
Magic Lantern has implemented hdr video which working from what I understanding recording 1 frame with an exposure and the second one with another exposure , than they are combined. Can be implemented this in Lcamera?
A clip is explained here: https://www.youtube.com/watch?v=WvOM3N34DjE
In theory, this can be done with the new API (we just request alternating exposure times for each frame). The problem is that this technique effectively halves the frame rate, and without the patched libraries, the camera is limited to 30fps which would become 15fps when halved. I will see if I can get this to work with the patched 60fps libraries though.
This technique would have the frames even if they are requested as(example):
- 1/30s and 400iso
- 1/30s and 1200iso
I guess the output can be a steady 30fps if the exposures time is faster than 1/30s. The current burst with exposure can manage 30fps if the exposure time is faster than 1/30s. On Feb 20, 2015 4:32 PM, "PkmX" [email protected] wrote:
In theory, this can be done with the new API (we just request alternating exposure times for each frame). The problem is that this technique effectively halves the frame rate, and without the patched libraries, the camera is limited to 30fps which would become 15fps when halved.
Reply to this email directly or view it on GitHub https://github.com/PkmX/lcamera/issues/137#issuecomment-75221484.
Oh yes, my bad. For HDR video, which would construct one frame from two images, the FPS can't be more than 15 with out modded libs. On Feb 20, 2015 6:06 PM, "Utkarsh Narain Srivastava" < [email protected]> wrote:
This technique would have the frames even if they are requested as(example):
- 1/30s and 400iso
- 1/30s and 1200iso
I guess the output can be a steady 30fps if the exposures time is faster than 1/30s. The current burst with exposure can manage 30fps if the exposure time is faster than 1/30s. On Feb 20, 2015 4:32 PM, "PkmX" [email protected] wrote:
In theory, this can be done with the new API (we just request alternating exposure times for each frame). The problem is that this technique effectively halves the frame rate, and without the patched libraries, the camera is limited to 30fps which would become 15fps when halved.
Reply to this email directly or view it on GitHub https://github.com/PkmX/lcamera/issues/137#issuecomment-75221484.