Christophe Gisquet <[email protected]> writes: > Are you sure it's not just a convenience to output the more practical, > aligned 24bits? Like something in the bitstream actually indicating > "shift left 4 bits", and the audio is *actually* 20 bits?
My inderstanding is that it really is 20 bit samples, shifted left to fill 24-bits. From page 142 of the spec (close to the end of the section on the XLL lossless extension): To obtain the output words, the resulting samples still need to be shifted left by NumEmptyLSBs places. I haven't really digested the spec yet, but I think the least significant bits are transmitted without compression. Which makes sense, since they ought to be pretty close to white noise, which is uncompressible by any lossless algorithm. Regards, /Niels -- Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26. Internet email is subject to wholesale government surveillance. _______________________________________________ libav-devel mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-devel
