-
GH2 PP import and export raining artifacts not in original MTS
Hi guys.
I have found a problem which others have found with importing GH2 footage into PP. Apologies if this has been covered and solved but whilst I can find lots of posts on the problem there is no definitive answer except to pre transcode to ProRes, DNxHD etc.
The problem is rain like artifacts on GH2 MTS files when viewed and exported from PP CS6 (I haven’t tried but apparently cs5.5 was the same). I have taken some clips and you can view them with the links at the bottom of this post. The rain like effect builds up over 1 second then disappears then builds again cyclically every 1 second. Guessing this is GOP related??
If you view the original material in VLC the first second shows the effect then it disappears and you just have the normal background noise but no obvious cycling rain. I have tried both stock 1.1 GH2 firmware and with higher bit rate set via ptools but the effect is the same even with stock firmware.
Import into PP and you can see it on source and program monitor, it does not show if you set the monitors to half res. However the export does show the effect.
If I transcode the MTS via FFMBC to prores the prores files plays fine from the vert start, shows fine in PP when imported and exports fine too.
So this relates to some sort of comparability issue between PP (and AE I am told) and the GH2 MTS files.
If anyone else has come across this can you tell me how you resolved it. Obviously I can pre convert to prores prior to import the PP but that negates the huge advantage of native support on the PP timeline and wastes a lot of time.
Files below of 2 sec clip if you want to have a look but any ideas guys?
Cheers
AndyOriginal GH2 MTS 1280/50F under exposed to show effect
https://mega.co.nz/#!WgpkBZrb!RlDm6n2xeq-bGI4t4UDnhHXmiaAZKRERg_YqxvXHKIAExported MP4 from PP CS6.0.3
https://mega.co.nz/#!38IxGQjA!WwAjaiIW7KF7lgoDkquGokrdutZqdDrvTEorl4o6dksOriginal MTS converted to ProRes via FFMPEG, imported to PP then exported.
https://mega.co.nz/#!zsg3xL5Q!d8Sj1QZfLdQh6h6XMJfIJXvIuVEl69X5bCF6eGFd2aY -
3 Replies
-
Looks like this is a bug with the Mainconcept filters used in PP. There appears to be a deblocking fault in the filters which needs to be fixed. Reference article is:
https://personal-view.com/talks/discussion/5120/please-help-problem-with-my-gh2-footage/p2
Post near the bottom by “willyfan”.
There must be others out there having the same problems. Only solution till it is fixed is transcoding.
-
Thanks much for the heads-up on this.
Have you seen this on other mts files or only from GH2 material?
Stange that it took so long for anybody to notice this, I had other oddities with GH1 100mbps-mts files way back when, but it wasn’t as serious as these artifacts.best, n.m.
-
Hi Ninetto
I don’t have any non GH2 MTS’s to try but if you or anyone does please let me know. The clips were recorded with stock 1.1 firmwar, only tweek was disable record length and allow PAL/NTSC switch. I might try today and see if stock with no settings at all makes any difference but it seems unlikely.
Much discussion over at the Adobe forums with some polarized opinions. Some have seen it some have not. I have had the 2 cameras for a few months now and shot material without being aware of the fault. But when it came to a big area of lower exposure it really stands out so the shots are unusable.
It does seem strange there has not been more comments here but it is a pretty active thread over at Adobe.
Cheers
Andyhttps://forums.adobe.com/message/5104387#5104387
Reply to this Discussion! Login or Sign Up