ffmpeg-convert-to-h265-windows

for %%a in ("*.*") do ffmpeg -i "%%a" -c:v libx265 -crf 28 "%%a-converted.mkv"
pause

REM Choose a CRF. The default is 28, and it should visually correspond to libx264 video at CRF 23, but result in about half the file size. Other than that, CRF works just like in x264.

REM Choose a preset. The default is medium
REM Valid presets are ultrafast, superfast, veryfast, faster, fast, medium, slow, slower, veryslow and placebo.