Last week saw the release of the Protune firmware for the GoPro HD Hero 2, the firmware offers some key updates for those who hope to do that little bit more with their footage. The key change is the reduction in the compression ratio, resulting in a data rate of 35mbps rather than a 20mbps, this reduces the amount of artifacts caused by the compression of the footage. Another major change is the addition of a 1080p @ 24fps mode, this allows the footage from the GoPro to be more easily integrated with output from other camera systems without the need to convert the frame rate to match.
The update also reduces the amount of in camera processing (reduced sharpening and a netural colour profile, amoungst other changes), this allows for more flexibility in the post processing of the video.
A couple of things to note:-
I currently use a Sandisk Extreme SD card, it's a class 10 card, I've had no problems with using it in the GoPro. With the Protune update switched on and recording at 720p at 60fps, the playback was jumpy, with a stutter in the video at roughly every second. Checking into the spec of the card, I think I've found the 'problem', the card has a write speed of 30mbps, obviously the protune update switched on it increased the data rate is 35mbps, 5mbps faster than the card can handle, hence the juddering video. I've been looking at buying a larger card for a little while now, it looks like I'll also have to make sure it's got a faster write speed.
One other thing I've noticed, I set my GoPro to PAL rather than NTSC, since the update this appears to always be set to NTSC. You can change the setting to PAL in the menu, but after you've exited the menu, if you go back in, it appears as NTSC again. Is this by design or by bug?
*follow up post.
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