> ## Documentation Index > Fetch the complete documentation index at: https://help.descript.com/llms.txt > Use this file to discover all available pages before exploring further. # Convert recorded audio to AI speech > Take your original recorded audio and replace it with an AI voice. This feature works on a single video or audio track; [multi-track sequences](/script-editing/multi-track-sequences-overview) aren't supported. **We recommend converting your script track to AI speech as early as possible in your workflow** Compositions with more edits, b-roll, and layers are more likely to see unexpected behavior when you convert. ## Convert recorded audio to AI speech 1. In the **script editor**, click the speaker label for the recorded section you want to change. 2. Choose a new voice to replace the existing audio. Select one of your own custom AI speakers from the list or **Browse stock AI speakers** to choose a stock voice from Descript's built-in library. 3. Re-select the speaker label, then click **Convert to AI speech** from the menu. 4. If that speaker is labeled elsewhere in your composition, choose whether to convert **just this section** or all places in the **whole composition** where that speaker label appears. 5. Click **Convert to AI speech** to confirm. Descript generates the new voice and replaces your original script audio with the new voiceover track; your video layer is moved into the layer lane with the original audio muted. To convert a specific range instead of a whole section, select the script text, then choose **Convert to AI speech** from the hover menu. Convert To AI Speech Script **The new generated voiceover may not perfectly match the timing of the original content.** Convert to AI speech only converts the original audio into AI speech. The new voiceover can run longer or shorter than your original recording, especially in compositions with long gaps or silence. We share a few suggestions for addressing gaps between your new audio and your original video in [Fix gaps in your video](#fix-gaps-in-your-video). ## Fix gaps in your video Descript's Convert to AI speech feature replaces your original audio with an AI voice, but doesn't retime your video to match the new voiceover. This can sometimes cause a gap, or empty frames in your original video. A few ways you could address this: * **Use a [freeze frame](/timeline/freeze-frames):** Adjust the pacing of your new audio by pausing your video on a specific frame for a few seconds. * **Cover the gap with B-roll or an image:** Create a new scene with B-roll of your own, or browse Descript's [media panel](/descript-tour/media-panel). * **Slow the clip down:** Stretch out the visual by slowing down the [clip speed](/visuals/clip-properties#adjust-clip-speed). * **Insert gap clips:** If the new voiceover is shorter than your original video, [convert your script to a standard audio layer](/ai-speech/convert-to-audio), then add a [gap clip](/timeline/using-gap-clips) or [adjust the word gaps](/script-editing/word-gaps) between words in your script. ## Troubleshooting * **An avatar layer moved behind your preserved video.** Drag the avatar layer back above the video in the layer lane to restore the original order. Learn more about adjusting layer order. * **Some converted paragraphs didn't start generating AI speech.** Toggle playback to trigger generation for any leftover sections. ## Related topics - [Stock AI voices](/ai-speech/stock-voices.md) - [Convert AI speech to a standard audio layer](/ai-speech/convert-to-audio.md) - [Troubleshooting and using AI Speakers](/ai-speech/troubleshooting.md) - [Generate text-to-speech audio](/ai-speech/tts.md) - [Studio Sound](/effects-animations-transitions/studio-sound.md)