Simple x264/x265 Launcher is a video encoder with a variety of configurations and preset templates. Includes full batch encoding support, as well as running several encoding jobs in parallel.
The program is a lightweight front-end for the x264 H.264/AVC as well as the x265 H.265/HEVC encoder, based on the Qt toolkit. The program also uses the 64-Bit version of x264 with the 32-Bit version of Avisynth, which lets you use 32-Bit Avisynth plug-ins (e.g. DGDecodeNV) and still benefit from the speed improvements of 64-Bit x264.