I'd like to burn my home made movies (DV) on DVD. That's why I installed kino, dvdauthor and the full mjpegtools package. Installing mjpegtools on my athlon64 3000 with 512Mb and two SATA disks in three different ways I noticed some extraordinary speed differences: 1) On my 64 bit SuSE 9.2 installation I compiled mjpegtools 1.6.2-54 (./ configure --libdir=/usr/lib64 CFLAGS=-fPIC, make, checkinstall). And YES, NASM is installed on my system. 2) On my 64 bit SuSE 9.2 installation I downloaded and installed mjpegtools 1.6.2-54.pm.0 x86_64 from packman (using YaST) 3) On my 32 bit SuSE 9.2 installation (same machine, just another disk) I downloaded and installed mjpegtools 1.6.2-54.pm.0 x86_64 from packman (using YaST) When encoding a piece of video (DV avi type 2 format) tot DVD format using Kino with the options " YUV denoise (fast)" and " mpeg2enc" I measured: Option 1: about 100 frames/minute (even slower than my PIII 600 Mhz) Option 2: about 200 frames/minute Option 3: about 650 frames/minute I know this is not a multimedia user list and I noticed some mmx-like optimalisations wouldn't work using 64-bit mode. But I still can't believe my athlon 64 hardly outperforms a pentium III system. I just like to know if anyone else had the same experience en found some way to gain speed when encoding video in 64 bit mode. Roel Vestjens