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15th June 2015, 08:21 | #4 | Link | |
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Quote:
There is no such thing as lossless 264 - it's a data reduced codec.
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2nd July 2015, 03:31 | #6 | Link |
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As mentioned, h.264 has features that allow for lossless encoding but few encoders support it, but x264 does. In x264 it's activated by setting QP to 0. When used, the video is encoded so that it can be decoded to a result that is bit-identical with the source of same chroma resolution. It switches to a special lossless macroblock coding mode where QP is not actually relevant, but it still benefits from the motion estimation searches, reference frames and so forth.
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aac, lossless, x264 |
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