Need the soundtrack of a video on its own? Attach the MP4, ask ToolGPT for the audio as WAV, and download a file that plays anywhere audio does. The picture is left out, and the work happens in your browser.
Open ToolGPT and press the + button beside the message box, or drop the video into the chat. No account is needed to start.
Type “Save the audio as WAV”. You can name a sample rate too, and a bitrate for compressed formats; anything you leave out follows the video's own audio.
The audio file appears as a card in the chat with a download button. The video is not changed.
Audio editors, transcription services and video production tools often ask for WAV because it is uncompressed and easy for any program to open. ToolGPT writes the WAV as 16-bit PCM, so it is much larger than the MP4's sound but cannot restore detail the original compression removed.
The sound is extracted and converted in your browser with a WebAssembly build of FFmpeg, so the video is not uploaded to a server. Only the audio is written to the new file.
A conversion changes the format and nothing about the sound itself: the length and loudness stay as they were. If you only need part of it, ask ToolGPT to trim the audio file afterwards.
MP4 is the standard MPEG-4 video container, used by phones, cameras, streaming sites and editing apps. It usually holds H.264 or HEVC video with AAC sound. Its strength is that it plays almost everywhere; its weakness is that the video is compressed with loss, so each re-encode costs a little quality.
WAV is the standard uncompressed audio format on Windows, created by Microsoft and IBM. It stores sound as plain PCM samples, so it is exact and opens in practically every audio editor. The cost is size: one minute of CD-quality stereo takes about 10 MB.
No. ToolGPT extracts the sound in your browser. Your messages go to the AI assistant, but the MP4 file stays on your device.
Yes. Ask for a sample rate, and for compressed formats a bitrate such as 192 kbps. Settings you leave out match the video's own audio.
Yes. After the conversion, ask ToolGPT to trim the audio file, for example “keep only 0:30 to 1:45”, and drag the range on the trim card.
Try it with your own file
Open ToolGPT, attach a file, and type what you want done.