Harsh
Well-Known Member
Are you referring to the video encoding in 2.7k mode? I understand the DSP is limited to 1080p60 in h264 mode, but it is evidently capable of higher resolution with mjpeg video.
There do appear to be some file compatibility issues with the mjpeg video. I normally clip video segments using avidemux, but it doesn't like the Maxi files either.
Trimming works with QT. Problem is stripping audio without altering the video in any way.
Just read through - https://en.wikipedia.org/wiki/Motion_JPEG
Encoding
M-JPEG is an intraframe-only compression scheme (compared with the more computationally intensive technique of interframe prediction). Whereas modern interframe video formats, such as MPEG1, MPEG2 and H.264/MPEG-4 AVC, achieve real-world compression ratios of 1:50 or better, M-JPEG's lack of interframe prediction limits its efficiency to 1:20 or lower, depending on the tolerance to spatial artifacting in the compressed output. Because frames are compressed independently of one another, M-JPEG imposes lower processing and memory requirements on hardware devices.
As a purely intraframe compression scheme, the image quality of M-JPEG is directly a function of each video frame's static (spatial) complexity. Frames with large smooth transitions or monotone surfaces compress well and are more likely to hold their original details with few visible compression artifacts. Frames exhibiting complex textures, fine curves and lines (such as writing on a newspaper) are prone to exhibit DCT artifacts such as ringing, smudging, and macroblocking. M-JPEG-compressed video is also insensitive to motion complexity, i.e. variation over time. It is neither hindered by highly random motion (such as the water-surface turbulence in a large waterfall), nor helped by the absence of motion (such as static landscape shot by tripod), which are two opposite extremes commonly used to test interframe video formats.
It tolerates rapidly changing motion in the video stream, whereas compression schemes using interframe compression can often experience unacceptable quality loss when the video content changes significantly between each frame.
No wonder there's so little motion blur.