Camera with high-quality still capture during continuous video capture

A method for processing a first source frame, comprising the steps of:

• (A) generating a first video frame by processing said first source frame from a first buffer during a first period using a processor;
• (B) transitioning said processor between two states at an end of the first period;
• and
• (C) generating at least a portion of a first picture frame by processing at least a portion of said first source frame from a second buffer during a second period using said processor,
• wherein said first period is (i) interleaved with said second period and (ii) temporally adjoining said second period.

A method for processing a source frame, comprising the steps of:

• (A) generating a first intermediate video frame by down-sampling said source frame in a first circuit, wherein (i) said source frame has a source resolution and has a source color space and (ii) said first intermediate video frame has a video resolution with a different number of pixels than said source resolution and has said source color space;
• (B) generating a second intermediate video frame by first de-mosaicing said first intermediate video frame, wherein said second intermediate video frame has said video resolution and has a video color space different than said source color space;
• (C) generating a video stream by compressing said second intermediate video frame with a video compression technique in a second circuit;
• (D) generating an intermediate picture frame by second de-mosaicing said source frame, wherein said intermediate picture frame has said source resolution and has a picture color space different than said video color space;
• and
• (E) generating a still picture by compressing said intermediate picture frame with a still picture compression technique in said second circuit, wherein (i) said still picture has said source resolution and (ii) generating said still picture occurs in parallel with generating said video stream.