JVC: Sharpness & bitrate - AVS Forum
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post #1 of 3 Old 07-04-2014, 07:05 AM - Thread Starter
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JVC: Sharpness & bitrate

Did you also notice that sharpness of the JVC HMZ1U (TD1) of some clips is sometimes reduced? I suppose that codec efficiency becomes relatively low in some situations. One of such examples is shown below (see left and right pictures), which was taken with the highest possible bit rate (mp4 mode). The video became blurred in the left bottom corner, especially on the right picture. It happened many times on my camera, even when there are not so many details on the picture. However, the heaviest blurring always happens in the left bottom corner. Probably codec spent all available data before trying to code the left bottom part of the picture?!? :-)

Damir
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Last edited by crunchy3d; 07-04-2014 at 07:28 AM.
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post #2 of 3 Old 07-06-2014, 04:48 PM
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I doubt it has anything to do with compression, it's likely just the lens being wacky. Make sure it's clean and try adjusting focus, if it continues to do it there might be something wrong with the lens. Try cleaning it and use it in a bright high contrast scene and see if it continues to do it.
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post #3 of 3 Old 07-06-2014, 11:52 PM - Thread Starter
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Such things are not regular. Usually the entire picture is sharp. Funny thing is that, when it happens, some parts of the picture (in foreground and background) are relatively sharp, while the other parts are blurred. Go figure.
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