I'm talking nonsense, ignore me, sorry.

@lpowell Just out of interest is there any point pushing the resolution higher than that ?

@LPowell When I first got my GH2 4 months ago the first thing I looked at was MJPEG in low light and in all truth I liked its relative performance compared to the other patch I was using at the time which was I think was Sanity. I have been on an obsessive learning curve since then so I have abetter idea about what I'm looking at. One of the things I continue to notice across all AVCHD patches is the starvation of data in low luma situations. Is this also a property of MJPEG. Does JPEG apply a perceptual compression technique related to luminance? Is the MJPEG constant quality or is it CBR.

Was it also resolved whether the MJPEG was 4:2:2 sampled or 4:2:0.

I can see from the Flat 4 thread that there is a hunger for specialist patches even with their limitations. So what sort of subject matter favours MJPEG over AVCHD at the same bitrates?

@Neverprod

Stop posting strange things.

@vicx The GH1 MJPEG encoder could be patched to record in 4:2:2 color, but the GH2 will work properly only in 4:2:0 color depth. Both MJPEG and AVCHD are VBR encoders and will naturally reduce their bitrates when underexposed, since there is less light in dimly lit scenes to record. What's important, however, is not the bitrate, but how finely the MJPEG and AVCHD frames are quantized and encoded.

With the MJPEG patch in Flow Motion v2, I was able to maintain bitrates close to 100Mbps at very dim exposures. As illumination dims, the encoder uses finer quantizing factors, until it reaches quality levels comparable to Photoshop JPEG images saved at maximum quality.

The AVCHD patch in Flow Motion v2 is designed to maintain consistent motion picture quality over a wide range of exposure levels. Since it is a short-GOP, B-frame encoder, it does not need as much bitrate to maintain maximum image quality at low light levels as the MJPEG all-Intra encoder.

Typically, both MJPEG and AVCHD encoders will operate near 100Mbps peak in well-exposed scenes. As exposure levels dim, the AVCHD encoder's bitrate will drop while it maintains consistent quality levels. The MJPEG encoder's bitrate will remain high, as it will actually increase its image quality at dimmer exposure levels.

In other words, it may eat the GH3's lunch. For now.

Yeah, just as long as it's not raining. :)

Hello post! Here is my test. Shot and edited in 2K, rendered in 1080p. I played with levels a bit.

Best comment ever: "Stop posting strange things."