GH3 Excessive mud issue with tall grass blowing

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photojunky

Active member
This was shot in 60p, 72mbp, 125/sec at about f8-16. If youlook above the bird located to the right of the scene you will notice the grassis blowing but is muddy and shows no detail. I know there is a lot of detailfor the camera to reproduce but is there anyway of decreasing this effect. I'veshot the same scene with some other cameras but do not remember it being anissue.
http://www.youtube.com/watch?v=-nplMtpA5Xw
 
That's the way you've compressed/encoded it at low res when you edited it - the original won't be, or shouldn't be like that. Re-encode and export it at a higher bitrate. You'll find it has nothing to do with the settings when you shot it.
 
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photojunky said:
This was shot in 60p, 72mbp, 125/sec at about f8-16. If youlook above the bird located to the right of the scene you will notice the grassis blowing but is muddy and shows no detail. I know there is a lot of detailfor the camera to reproduce but is there anyway of decreasing this effect. I'veshot the same scene with some other cameras but do not remember it being anissue.
http://www.youtube.com/watch?v=-nplMtpA5Xw
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For scenes with great detail, All-I is unusable. Shoot at 50Mbps IBP and this scene will be tack sharp.

Good luck,
 
The 72 Mbps data-rate is too low for detailed I-Frame filming. ( hopefully the GH3 will be hacked to double this data-rate )

As Dan mentioned, shoot with the 50 Mbps MOV format which should handle this amount of detail much better.
 
Do you see it in the original footage?

on a side note to mud and 50mb MOV, i have noticed in a hand full of people/event shots codec breakup "mud" lasting maybe 1-2 frames.
 
Well, I uploaded again with the highest bitrate Avid Studio would allow and it made no difference. And yes, I did see it in my computer while editing. Couldn't see it through the view finder while filming but that could be my aging eyes. In the next few days I will shoot this scene again to see which format works the best. Thanks for everyone's help.
 
photojunky said:
I actually messed up by saying it was shot at 72 when it was in fact shot at 50mbp in MOV mode.
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I've been shooting with my GH3 since last December, and so far I've never experienced what you're seeing. 50 Mbps MOV has been pretty much bullet-proof for me.
 
photojunky said:
Well, I uploaded again with the highest bitrate Avid Studio would allow and it made no difference.
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Unless you shot this on the very first iphone or imported into Avid at a draft resolution there is no way the GH3 would shoot "mud" like this. The problem is once it goes into edit. Are you shooting on the lowest mp4 setting on a super slow card, that's the only other way it would look like that.
 
malibudutchie said:
Unless you shot this on the very first iphone or imported into Avid at a draft resolution there is no way the GH3 would shoot "mud" like this. The problem is once it goes into edit. Are you shooting on the lowest mp4 setting on a super slow card, that's the only other way it would look like that.
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class 10, mov mode 50mbps. This scene would also lock up my hacked gh1. There is an incredible amount of detail for the cameras brain to reproduce. The wind is blowing every individual blade of grass. If there was a scene that would give a digital camera a hard time it would be this one. I've had the camera a couple of months and have shot it in every kind of setting without an issue. I shot this a minolta rokkor 50mm 1.4 lens. I may try a different lens not that it will make a difference.
 
photojunky said:
class 10, mov mode 50mbps. This scene would also lock up my hacked gh1. There is an incredible amount of detail for the cameras brain to reproduce. The wind is blowing every individual blade of grass. If there was a scene that would give a digital camera a hard time it would be this one. I've had the camera a couple of months and have shot it in every kind of setting without an issue. I shot this a minolta rokkor 50mm 1.4 lens. I may try a different lens not that it will make a difference.
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Looks like some very bad compression artifacting. Either that or you've applied a blur filter to a masked section of your clip. Whatever it is, it's in no way representative of either the general GH3 IQ nor compression from Avid MC, FCP, Compressor, Episode etc...
 
It is hard to see through the view finder if it is doing this but I did think I was able to see it slightly. I don't think it is a compression issue and I know no blur filter was applied. I've taken many hundreds of clips with this camera and setting but only this clip with these conditions (extremely high detail) had been an issue. Like I said, this scene would also lock up my hacked gh1. Is there anyone else out there who has shot video in of a field of tall grass blowing? I reshot it today in several different formats but all had the same result.
 
malibudutchie said:
Plug the camera into your TV - then you'll know.
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Duh, I'm embarrassed I didn't think of that. Unfortunately I deleted the video but I do walk my Labrador there everyday so I'll reshoot tomorrow and finally know if its a compression or too much detail issue. Thanks for your suggestion.
 
Mystery solved for the most part. I reshot the same scene, then dragged the mov file to my desktop instead of importing the file to avid studio. I played it through windows media player and it was tack sharp. F-ing beautiful quality. That made me believe the problem was a compression issue with avid as balagan suggested, but when I uploaded the file to YouTube by dragging it and completely avoiding avid, same muddy result. Apparently the problem is YouTube. I also uploaded to vimeo and had the same result. I am kind of relieved because I thought the camera was having issues with all the detail. It must be the way YouTube compresses the file or something to that effect. I was going to plug the camera into the tv as malibudutchie suggested by didn't have the right cord. Very interesting.
 
photojunky said:
Mystery solved for the most part. I reshot the same scene, then dragged the mov file to my desktop instead of importing the file to avid studio. I played it through windows media player and it was tack sharp. F-ing beautiful quality. That made me believe the problem was a compression issue with avid as balagan suggested, but when I uploaded the file to YouTube by dragging it and completely avoiding avid, same muddy result. Apparently the problem is YouTube. I also uploaded to vimeo and had the same result. I am kind of relieved because I thought the camera was having issues with all the detail. It must be the way YouTube compresses the file or something to that effect. I was going to plug the camera into the tv as malibudutchie suggested by didn't have the right cord. Very interesting.
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Glad to see that the mystery is (almost) solved. Wonder what's up with the online video transfers? Try using the standard High Quality Vimeo template in FCPX or Compressor and see what happens.
 
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