Questions · Networks
What changes between H.264 and H.265?
H.265 compresses a good deal better: with the same image and the same scene it can sit around half the bit rate of H.264. How much it really drops depends on what is being recorded and on how the camera is configured, so it is an estimate for the project, not a promise for the contract.
What costs is decompressing. A mosaic of sixteen cameras in H.265 asks more of the viewing workstation and of the server than H.264 does, and there are older recorders and clients that simply will not play it. That is why the codec is not chosen by looking at the camera alone: it is chosen by looking at the whole chain.
And almost every manufacturer has its own smart compression on top, which drops the bit rate a lot on still scenes and almost not at all on busy ones. It helps, but it is worth checking that the recorder understands it and that it does not ruin the image exactly when something happens, which is when you need it.
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A written answer is enough to decide whether it interests you. To know whether it works at your site you have to see it on a real scene, with the image as it is and, on top of it, what the system understands from it. That is on the IRIS Neural website, which is the group's product.