Video and audio tools

Guides

• How to convert MOV (and other videos) to MP4

  Convert MOV, MKV, AVI and other videos to MP4 so they play on any phone, computer and TV. Which format to choose, and whether converting loses quality.

• How to cut an MP3 or other audio file

  Cut an MP3, M4A or WAV file to the part you want by start and end time, add fade in and fade out, and save as MP3, M4A, WAV or an iPhone ringtone.

• How to make a ringtone for iPhone or Android

  Make a ringtone from any song or video for iPhone (M4R, up to 40 seconds) or Android (MP3), with fades, and how to add it to your phone.

• How to make a video vertical (9:16) for TikTok, Reels and Shorts

  Crop a landscape video to vertical 9:16 for TikTok, Reels and Shorts, square 1:1 or 4:5 for Instagram, keeping the part you choose. No black bars, no watermark.

• How to make audio files smaller

  Make MP3 and other audio files smaller by lowering the bitrate, and when to use mono. Best settings for voice notes, podcasts, lectures and music.

• How to merge audio files into one track

  Join MP3, M4A, WAV, OGG and FLAC files into one track, back to back or with a 2 or 5 second crossfade, and save as MP3, M4A or WAV.

• How to merge videos into one

  Join two or more video clips into one MP4 in the order you choose, even with different sizes and formats. Why merging takes time and how to make it faster.

• How to record your screen without installing anything

  Record your screen, a window or a browser tab with your microphone and tab sound, without installing anything. No watermark and no time limit.

• How to record your voice online

  Record your voice in the browser on a phone or computer, with a level meter, pause and resume, and save it as MP3. Tips for clear voice recordings.

• How to remove the sound from a video

  Remove the audio from MP4, MOV, WebM and MKV videos in seconds without re-encoding, so quality stays exactly the same. Also how to keep or replace the sound.

• How to rotate a sideways video

  Fix a sideways or upside-down video by rotating it 90° or 180°, or mirror a selfie video. Saved as an MP4 that plays the right way up in every app.

• How to speed up or slow down a video

  Make a video faster (up to 4×) or slow motion (down to 0.25×) while voices keep their normal pitch. How long the result will be and how to make a timelapse.

• How to transcribe a video to text and make subtitles

  Transcribe video and audio to text with Whisper AI in your browser, and make SRT or VTT subtitles for YouTube and social media. Free, around 100 languages, nothing uploaded.

• MP3 vs M4A vs WAV vs FLAC: which audio format to use

  MP3, M4A (AAC), WAV, FLAC and OGG compared: quality, file size and compatibility, which bitrate to choose, and how to convert between them.

• How to compress a video for Discord (under 10 MB)

  Discord's free upload limit is 10 MB. How to get a clip under it without making it unwatchable, with the settings that matter and what to do for longer videos.

• How to extract audio from a video (MP3, M4A or WAV)

  How to get the sound out of a video as MP3, M4A or WAV, which format to choose, and how to keep the quality without making huge files.

• How to trim a video without an app

  How to cut the start and end off a video on a phone or computer, get exact times, and keep the file small, without installing an editor.

• How to make a GIF from a video

  How to turn part of a video into a looping GIF, which settings keep it small, and when a short video is a better choice.

• How to reduce a video's file size

  Three ways to make a video file smaller, what each one does to quality, and a real example that cut a 1280 × 720 clip by 77%.