Remuxer

Everything your videos need

• Fast, lossless muxing

  Remux H.264, HEVC and AV1 videos from MKV and other containers to MP4 or MKV with ffmpeg, without re-encoding.

• Convert when needed

  Convert videos to H.264 or HEVC with your device's hardware encoder when the source codec won't play on your device, at the quality you choose.

• Pick your tracks

  Choose which video, audio, subtitle and chapter tracks to keep, drop the rest to reduce file size, and put them in the order you want.

• Add tracks from other files

  Add audio and subtitle tracks from separate files, such as SRT, ASS, VTT, PGS, AAC, AC3, DTS or FLAC. Pick them or just drop them on the editor.

• Sync correction

  Audio or subtitles out of sync? Delay or advance any audio or subtitle track to the millisecond.

• Audio & subtitles on their own

  Leave out the video to export audio or subtitle tracks in their own format, such as M4A, AC3, SRT or SUP.

• Audio downmixing

  Convert DTS and AC3 audio to AAC or AC3 with 2.0 or 5.1 channels.

• Metadata & artwork

  Import titles, descriptions and artwork from TheTVDB, TheMovieDB and, for TV shows, the iTunes Store, or edit them yourself.

• Processing queue

  Line up whole seasons and let Remuxer work through them one after another, even in the background on iOS 26.

• Made for iPad

  On iPad the editor opens full screen, with every track on one line and, in landscape, the file details and metadata right next to the tracks.