Hello Joshua, Thanks for reporting this blocking artifacts issue, we have identified the issue, there is a bug while sharing the best merge candidates and we have fixed this issue and sent the patch for it
Thanks Gopu G On Thu, Jun 11, 2015 at 6:06 PM, Joshua Bowman <[email protected]> wrote: > I just made my first encode with --analysis-mode load and while it ran 3 > times as fast, the > encoded file was completely broken. This is with 10-bit input and output, > current git head. > > Original command line: x265 --preset veryslow --input pristest.y4m > --analysis-mode save > --analysis-file pristest.dat --crf 20 -o pristest-q20-veryslow.hevc > Second command line: x265 --preset veryslow --input pristest.y4m > --analysis-mode load > --analysis-file pristest.dat --crf 24 -o pristest-q24-veryslow.hevc > > pristest.y4m: > https://dl.dropboxusercontent.com/u/54412753/x265/pristest_30s.7z (first > 30s of > the original 120s) > pristest.dat: > https://dl.dropboxusercontent.com/u/54412753/x265/pristest.7z > pristest-q24-veryslow.hevc: > > https://dl.dropboxusercontent.com/u/54412753/x265/pristest-q24-veryslow.hevc > > All I changed was the crf, and I got tons of black blocks and echo blocks, > especially beginning > around 0:20, as if residuals sometimes weren't being applied at all. MPDN > just freezes, other > players play with major artifacts. > > Aside from that, holy crap is the analysis file huge. It's as large as the > y4m; I had to put it > on a ntfs compressed folder, where it went from 11gb to 800mb real bytes. > (The 7-zip is only > 50mb.) Surely x265 can run some sort of compression over it while writing, > either low xz (lzma2) > or at least lzo/lz4? When I first attempted to use it from the same drive > as my working file, I > ended up thrashing the disk so badly that encoding speed was actually > halved, until I moved it > to my SSD system drive. > _______________________________________________ > x265-devel mailing list > [email protected] > https://mailman.videolan.org/listinfo/x265-devel > -- Thanks & Regards Gopu G Multicoreware Inc
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