Speed a video up, slow it down, or retime an audio file on its own. Pick a card or name any speed between 0.25× and 4×, and ToolGPT makes the new file in your browser.
Cards for 0.25×, 0.5×, 1.5×, 2× and 4× each show how long the result will be.
Name any value from 0.25× to 4×, such as 1.25×. A speed outside that range is refused, not quietly changed.
Sound is time-stretched by default, so speech keeps its normal pitch.
Ask for the pitch to move with the speed, like a record played too fast or too slow.
On a video, picture and sound change speed together. An MP3, WAV, M4A or OGG on its own is quick, because there is no picture to re-encode.
Press the + button beside the message box, or drop the file into the chat.
Ask to speed it up or slow it down. Tap a card, or name the exact speed you want.
The retimed file appears with a download button. The original is not changed.
A speed change keeps every second of the content and changes how fast it plays. At 2× a ten-minute video lasts five minutes; at 0.5× it lasts twenty. The cards show the new length for your file, so you can choose by duration if that is what matters.
If you want a shorter file because part of it is not needed, trimming is the better tool. When you only say “make it shorter”, ToolGPT asks whether you mean faster or cut down.
By default the sound is time-stretched, so a lecture at 1.5× sounds like a quick speaker rather than a cartoon. If you want the other effect, such as a “slowed” version of a song, ask for the pitch to change with the speed.
On a video, the picture and sound always change speed together, so they stay in sync. A processed MP3 comes back as an M4A, because no browser can write MP3 files directly. Ask ToolGPT to convert it to MP3 afterwards if you need that format.
No. This tool changes the speed of the whole file.
Not with this tool. ToolGPT has a separate audio effect for that.
No. The speed change runs in your browser.
Try it with your own file
Open ToolGPT, attach a file, and type what you want done.