ffmpeg -i input.mkv -c copy output.mp4 Note: This only works if the internal codecs are already MP4-compatible (H.264/AAC). The most common reason people look up "filedot mp4" is to solve the problem: "My MP4 is too large to email or upload."
Using FFmpeg:
But what exactly is "filedot mp4"? Is it a new software? A proprietary codec? Or a specific tool? filedot mp4