Probably I didn't understood the whole problem, but if you just want to convert from MKV to MP4 with saving 100% video and audio quality, that is without reencoding, you can do it like this: ffmpeg -i "video_1.mkv" -map 0 -c copy "video_1_new.mp4". -map 0 might be needed for saving all of video, audio, and subtitle streams, if there are more
Convert the file. Now your video is uploaded and you can start the MP4 to MKV conversion. If it is needed, change the output format to one of the 37 video formats supported. After that, you can add more videos for batch conversion. Step 3.
Not only mkv to mp4 you c Hi guys this is channel f&D in this video I'm going to show you guys how to convert video from .MKV to .MP4 using VLC Media Player.