CrypticSignal / Av Converter

On https://av-converter.com you can:

• Convert an audio file to another format - MP3, AAC, WAV, Opus, Vorbis, FLAC, ALAC, AC3, DTS or CAF.
• Convert a video to an audio-only file (to any of the above formats).
• Convert a video to the MP4 or MKV format.
• Change the audio codec of a video to MP3, AAC, AC3, DTS, WAV, FLAC or ALAC.
• Download a YouTube video or just the audio.

Features (audio/video converter):

• You can see the file upload progress as a percentage and also amount uploaded (MB) in realtime.
• Upload completion time is shown in realtime.
• Whilst the file is being converted, an alert shows how much of the file (HH:MM:SS) has been converted so far. The alert is updated every second.

Features (YouTube downloader):

• Download the video. MP4 format is available.
• Download the audio only. MP3 format is available.

Supported Filetypes:

Many filetypes are supported, click here for details.

Requirements for running locally:

You can run the Flask app locally for development purposes or if you want audio/video conversion to be quicker as the file(s) will not need to be uploaded to my server.

• npm
• Python 3.6+
• FFmpeg
• cd backend, pip3 install -r requirements.txt

How to self-host:

• Clone this repository.
• add "proxy": "http://127.0.0.1:5000" to frontend/package.json.
• Change the value of ffmpeg_path in converter.py to the correct path.

Open 2 terminal windows.

Window 1:

• cd backend
• pip3 install -r requirements.txt
• python3 main.py

Window 2:

• cd frontend

• npm install

• Enter npm start and after a moment you should be taken to http://127.0.0.1:3000

If you want to convert to AAC when running this web application locally:

When running locally, you will not be able to convert to AAC unless your build of FFmpeg has --enable-libfdk-aac in the configuration (if unsure, enter ffmpeg -buildconf in the terminal and look under configuration:). This is because this web application uses the high quality fdk-aac AAC encoder, and "the license of libfdk_aac is not compatible with GPL" (source). Therefore, you cannot download a pre-built FFmpeg binary that supports that encoder. Here's how to complile FFmpeg on Ubuntu/Debian/Mint with libfdk_aac support, if your build of FFmpeg does not have --enable-libfdk-aac. Or, if you know what you're doing, you can edit the code in converter.py to use FFmpeg's native AAC encoder instead.