Sound, picture and transcripts
Extract MP3 from a video, convert audio, open the MP3 to WAV, WAV to MP3 or M4A to MP3 page when the pair is fixed, join clips, trim a clip, merge clips into one video, resize, crop, rotate or flip the picture, change the speed, add a soundtrack, compress for a message, remove the soundtrack, turn a GIF into MP4, make a short GIF, or transcribe speech with Whisper. Each task has its own page.
Heavy work stays on the device
Video encoding uses one CPU thread, so a long clip can take about as long as it plays, or longer. Leave the tab open until the download appears. The media is not uploaded to be processed.
How to pick a video or audio tool
1. If you need words, open Video to text or Audio to text. 2. If you need a soundtrack, open Video to MP3, or MP3 to WAV, WAV to MP3 and M4A to MP3 when the pair is already fixed. 3. Cut with Trim, or join clips with Merge video, before you compress or make a GIF. 4. Leave the tab open while FFmpeg or Whisper works.
These pages share WebAssembly engines that download once and stay cached. They do not fetch media from a link. A long encode is slower than a PDF tool because it uses one CPU thread.