1
Add your MKV to the canvas
Place a File node on the board and upload the .mkv file, including large HD rips.
ConvertFree starter credits
MKVMP4
Turn a flexible Matroska MKV into an MP4 that plays in Safari, on iPhones, and everywhere else.
MKV (Matroska) is a flexible, open container widely used for HD rips because it can hold many video, audio, and subtitle tracks in one file. Its weakness is compatibility: Safari, most iOS devices, and many smart TVs and upload forms do not play MKV natively. MP4 is the near-universal MPEG-4 container that plays essentially everywhere. Crucially, MKV very often already contains H.264 video, so converting to MP4 can be close to a re-mux — the same video and audio streams repackaged into a new container with little or no quality loss. When the MKV holds HEVC, VP9, or AV1 instead, moving to a standardized H.264 MP4 becomes a true re-encode. Either way you gain broad playback support.
Convert MKV to MP4 on the canvas
Drop your file onto a Brainy Canvas board, connect the converter node, and download the result. New accounts get free starter credits — enough for roughly 66 video conversions — with no card required.
2
Connect the Video Converter
Attach a Video Converter node and select MP4. FFmpeg maps the primary video and audio into an MP4, re-encoding to H.264 + AAC when the source codec is not already MP4-compatible.
3
Download your MP4
Grab the finished .mp4 that now plays on Apple devices and everywhere else.