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QT Reference
Hi,
I am exporting video into sorenson squeeze, which is a method I usually use for creating various files etc. However, this particular film (shot in a night club) comes up with lots of different small glitches when the file is created. It runs smoothly but in places looks faintly pixelated/’wavey’. It does not look like this within Avid, or from the raw footage. Any suggestions would be greatly appreciated! I am using the HQ setting in Sorenson.
John.
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5 Replies
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Are you using a codec that allows for multiple pass and variable bit rate?
Michael
Michael Phillips
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how would I check? Is that an export setting, or a squeeze option?
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It’s in the export settings of the codec you’re choosing in Sorenson. Once you select the HQ (assuming H.264 or MPEG2..), you double click the preset to open up the parameters you can control for that particular codec. Sometime there will also be an ADVANCED tab. But usually at the top level you will see CBR (Constant Bit Rate), VBR (Variable Bit Rate), and how a selection for multipass. Multipass and VBR take longer, but can create better looking encodes depending on complexity of source footage.
Michael
Michael Phillips
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Thanks very much, I’ve had a look and they seem to be on the suggested higher setting in HQ. The problem is still there however (as I mentioned I’ve never noticed it to this degree before) and it is best described as slight flickering horizontal lines running across the image intermittently. Do you think this may be because it is a dark room with flickering disco lights, and the software is struggling to match the raw footage?
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It might be that the data rate is too high for those sections and choking a bit on playback…
Michael
Michael Phillips
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