A web app that allows you to convert an audio or video file to another format or download YouTube videos.

Available at https://av-converter.com

Converter

Convert an audio or video file to any of the following formats:

• AAC
• AC3 (Dolby Digital)
• ALAC
• DTS
• FLAC
• MP3
• Opus
• Vorbis
• WAV

Converting a video to one of the above formats will turn it into an audio-only file. You can also convert a video to MP4 or MKV.

YouTube Downloader

Visit the /yt endpoint to use the YouTube downloader, which is essentially a frontend for yt-dlp. There are four options:

• Video (MP4) - downloads the best quality MP4 video stream and merges it with the best quality AAC audio stream. If no MP4 stream is available, this option will behave the same as Video (best quality).
• Video (best quality) - downloads the best format (determined by yt-dlp) that contains video. If this format doesn't contain an audio stream, it is merged with the best quality audio stream. This option usually results in a video file in the WebM format with Opus audio.
• Audio (best quality) - downloads the best quality audio stream. Usually an Opus file with bitrate of ~160 kbps.
• Audio (MP3) - downloads the best quality audio stream and converts it to the MP3 format.

If you are not sure which option to opt for, I recommend Video (MP4) and Audio (MP3) depending on whether you want the video or an audio-only file. This is because MP3 and MP4 files are more widely supported compared to Opus and WebM files.

Docker

You can run this web app locally with a single command:

• cd docker/dev && docker compose up --build --wait && docker compose alpha watch
  

• Visit http://localhost:3001

Any changes you make in /backend/src or /frontend/src will be reflected without having to rebuild any containers. Simply refresh your web browser.