.MTS files from Panasonic GH2 camera show noise artifacts

Report · Nov 24, 2012

If I load .MTS media files from my Panasonic GH2 camera onto the timeline of Premiere Pro CS6 (Win7 on PC) on some footage I get a wierd noise/artifact appearing in the footage on playback and also if i render the timeline out.

The artifacts look like a 'rain' of digital noise appearing in certain dark areas of the footage (issue doesn't happen on well lit scenes)

If I use Media Player Classic to play back the .MTS footage outside of PP CS6 the footage plays back 100% ok.

If I transcode the .MTS files into DNxHD format using Adobe Media Encoder the problem persists.

However ....if I transcode the .MTS files into DNxHD format using a 3rd party transcoder (5DtoRGB) the problem is resolved and the DNxHD files work 100% ok in PP CS6

It is as though both PP CS6 and also Adobe Encoder are not interpretting the .MTS file structure ok (?) and introducing artifacts.

It seems that some dev work is needed to resolve the handling of .MTS files by Adobe (?)

Can anyone please assist?

Thanks

Report · Feb 25, 2013

I took the trouble to upload two files which show the difference, and after viewing those files, if anyone still does not think this is an issue, then that of course is the nature of subjective observation.

What we do know, is that the problem goes away if you render the video using 5.5, or use an intermediary codec. I find the idea that if the camera is at fault, the fact that 5.5 knows this, but version 6 does not, an intriguing idea, but I can't see how it would work. Since there is a simple workaround, like many things, it is better to work around it.

Report · Feb 25, 2013

it is better to work around it.

I'd not be happy with that, myself. I'd want to find out exactly why they appear and get it fixed. 'Cause like I said, in 8 months of using my GH2, in a few hundred hours worth of footage, I've never once seen those artifacts.

Report · Feb 26, 2013

andynz222 wrote:

Original GH2 MTS 1280/50F under exposed to show effect
https://mega.co.nz/#!WgpkBZrb!RlDm6n2xeq-bGI4t4UDnhHXmiaAZKRERg_YqxvXH KIA

I downloaded this file and it shows 'rain' for about a second in the VLC player.

no 'rain'.