I googled, it seems opencl/cuda is not available in ffmpeg and handbrake. So, is there one tool can convert a video to h.264 or vp8 by GPU acc on OS X(linux can be accepted also)? Thanks.
Found some topics about archiving into h264, but those were about the generic questions (does it worth it, which codec to use.) I want to use h264 (with CUDA (if possible)). So far I only found ...