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Old 20 Apr 2012, 11:10 PM   #1
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Default Why JM encoder (H264 encoder) doesn't have limit checks on transform output?

Hi, As per the h264 specification, in case of bitdepth equal to 8, transform ouput should be within the
(7 + BitDepthY) to 2^(7 + BitDepthY)–1, inclusive. But few streams generated by the JM encoder producing morethan 16 bit output as transform coefficients. JM encoder doesn't have limit checks on transform output. Can i assume that, the coefficient size after the transform is within the 16 bit in h264 decoder implementation (i.e. inverse quantization input)?

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