You cannot write cmp low_, high_. For such questions, always refer to the official instruction description, e.g. at https://www.felixcloutier.com/x86/cmp. Note that cmp has forms cmp r/m16, r16, for which the first operand can be either register or memory, and the second must be a register; as well as cmp r16, r/m16 which is the reverse. … Read more
FFMPEG changed the default behavior to auto rotate video sources with rotation metadata in 2015. This was released as v2.7. If your ffmpeg version is v2.7 or newer, but your rotation metadata isn’t respected, the problem is likely that you are using custom rotation based on metadata. This will cause the same logic to be … Read more
In functionality, they are identical. On some (but not all) micro-architectures, there are timing differences due to “domain crossing penalties”. For this reason, one should generally use movdqa when the data is being used with integer SSE instructions, and movaps when the data is being used with floating-point instructions. For more information on this subject, … Read more
I know that the original question is solved, nevertheless, I am posting this answer in case anyone else got stuck like I did. Since yesterday, I have tried everything, and I mean everything to do this. All available Java libraries are either out of date, not maintained anymore or lack any kind of usable documentation … Read more