All format conversions

Each page opens the same in-browser converter with the right output preset, plus notes on what happens to that particular format.

Video to video

• MOV→ MP4iPhone and Mac recordings come out as MOV.
• MP4→ MOVSome Mac workflows, Final Cut libraries and QuickTime-only tools prefer MOV, and some broadcasters specify QuickTime delivery.
• MKV→ MP4OBS and many downloads save MKV, but phones, iMovie, Premiere uploads and most social sites want MP4.
• WebM→ MP4Screen recorders, browser downloads and MediaRecorder save WebM, which iPhones and many editors handle poorly.
• MP4→ WebMWeb developers want royalty-free WebM for <video> tags, and some wikis and chat tools accept only WebM.
• AVI→ MP4Old camcorders, DivX/Xvid downloads and Windows Movie Maker exports are AVI, which modern phones and TVs often refuse.
• MP4→ AVIOlder DVD players, car head units and legacy editing software read AVI with Xvid-style video but not MP4.
• WMV→ MP4Windows Media files from old Movie Maker projects or screen capture tools do not play on Macs, iPhones or the web.
• FLV→ MP4Flash Player is gone, so FLV downloads and old stream recordings need a modern container.
• MPEG→ MP4MPG and VOB files from DVDs and old capture cards take a lot of space and are awkward on phones.
• MTS→ MP4Sony and Panasonic AVCHD camcorders record MTS/M2TS files that many editors and phones will not import.
• 3GP→ MP4Old feature-phone videos are 3GP with AMR audio, which modern players often play silently or not at all.
• HEVC→ MP4 (H.264)iPhones and many Android phones record HEVC (H.
• GIF→ MP4Instagram, TikTok and many ad platforms do not accept GIF uploads, and MP4 versions load far faster on web pages.

GIF

• MP4→ GIFGIFs autoplay and loop everywhere: in chat, docs, READMEs, forums and email, with no player needed.
• MOV→ GIFTurn an iPhone or screen-recording clip into a looping GIF for Slack, GitHub or a slide deck.
• WebM→ GIFBrowser screen captures and downloaded clips are WebM; a GIF plays in places that will not embed video.
• GIF→ MP4Instagram, TikTok and many ad platforms do not accept GIF uploads, and MP4 versions load far faster on web pages.

Audio

• MP4→ MP3Save the soundtrack, a talk or a voice memo from a video as a small audio file that any player accepts.
• MOV→ MP3Get the audio from an iPhone video: a performance, a lecture, a voice note.
• WebM→ MP3WebM downloads and browser recordings carry Opus or Vorbis audio that some car stereos and old players cannot play.
• AVI→ MP3Pull the audio track out of older AVI recordings or DivX files.
• MP4→ WAVEditors, DAWs, transcription tools and samplers want uncompressed WAV.
• MP4→ M4AKeep the exact original audio of a video in an Apple-friendly file for iTunes, iPhone ringtones or podcast apps.
• M4A→ MP3iPhone voice memos and iTunes downloads are M4A; older players, some car stereos and upload forms want MP3.
• OGG→ MP3Ogg Vorbis and Opus files from games, Linux apps and messaging voice notes do not play on some devices.

Any other combination works from the main converter: it accepts every input listed on the formats page.