100Mbps GH2 Low Light MJPEG 1080p Patch

[Lpowell]

My hopes would have been that a 50mbps patch could bring better playbacks (in-camera and on my pc)... But I don´t have a clue whether the quality would suffer quite a lot or not...

Both GH1 and GH2 appear to balk at playing back MJPEG videos that have a bitrate much higher than 35Mbps. On PC's, I haven't encountered any playback issues with 100Mbps MJPEG files. MJPEG is roughly comparable in compression efficiency to AVC-Intra, which comes in 100Mbps and 50Mbps profiles. However, 50Mbps AVC-Intra only records 1080p in a squeezed 1440x1080 format. I found that boosting MJPEG frame size to a full 1920x1080 required significantly more bitrate than the standard 1280x720 resolution, and concluded that 100Mbps was needed to preserve its image quality.

 

[Greg_E]

Resurrecting the dead (blame google for leading me here)... With the latest ptool, and the latest firmware upgrade, I see that there is a place to change the frame rate down to 24p, is this really 24p?

I was wondering about the 4:3 mode, wasn't sure if it could be set up to a 2K resolution, found my answer and something I'll need to include in my patches.

Is the information in these patches compatible with the most recent version of ptool? (in short can I copy and paste the required fields into a newer style of patch) Looking to make a multipurpose patch with the best mjpeg and best avchd settings. And then make this for both 16:9/4:3 mjpeg and another for the 1.33x anamorph and 2x anamorph settings. I have five 1GB cards to use for different hacks, want to make the most of them so I don't have to switch (install different) hacks all the time. Right now I'm only playing with 1.33x adapters, but the 2x are pretty cheap so I may give one a try.