![]() ![]() The more highly compressed the image the more noise and the more blockiness. Encoding and compressing material introduces noise, often in the form of mosquito noise as well as general image blockiness. If you take two recordings, one at a nominal 100Mb/s and another at say 50Mb/s you will be able to do more with the 100Mb/s material because there will be less noise. If you have a noisy image and you start to push and pull it, the noise in the image tends to limit what you can get away with. My experience in post production has been that what limits what you can do with your footage, more than anything else is noise. The EBU recently evaluated several different 8 bit and 10 bit acquisition codecs and their conclusion was that for acquisition there was little to be gained by using any of the commonly available 10 bit codecs over 8 bit because of the data overheads. ![]() So recording 10 bit needs bigger files for the same quality. The first thing to consider is that a 10 bit codec requires a 30% higher bitrate to achieve the same compression ratio as the equivalent 8 bit codec. This is my take on the situation, from the acquisition point of view. "Over the years there have been many, often heated debates over the differences between 8 bit and 10 bit codecs. ![]() I trust Alistair doesn't mind me reproducing it here. The original link I cannot find at the moment. Below is a 100% Quote from that document. I tend to think he is spot on on his analysis of the subject. I kept a Word doc on his observations for future reference. I think Alistair Chapman argued the pros and cons of 8-bit vs 10-bit quite succinctly a while back. ![]()
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