Short answer: if the clip plays but its waveform is missing, open Timeline View Options in the toolbar above the Edit timeline and enable Display Audio Waveforms. Then increase the audio-track height. If only one clip remains blank, go to the Fairlight page, right-click that clip and choose Clip Operations > Regenerate Waveforms.
Don't start by deleting caches or changing audio devices. A missing waveform usually comes down to one of three things: the display option is off, the track is too short to draw useful detail, or one clip's waveform needs rebuilding. A project with no sound at all is a separate problem.
Match the fix to what you see
- Every audio clip is blank: check Display Audio Waveforms first.
- The tracks look like thin bars: confirm waveforms are on, then increase the audio-track height.
- One clip is blank while the others look normal: compare it in File Inspector > Audio Configuration, then regenerate that clip's waveform.
- A waveform appears in the Inspector but not the timeline: the source has readable channel data, so the fix lies in timeline display and waveform generation.
- There is no sound and no waveform: switch to the DaVinci Resolve no-audio guide. It walks through channel mapping, tracks, buses, monitoring and output devices.
Working in this order keeps a small display glitch from turning into a project-wide troubleshooting session.
1. Turn on Display Audio Waveforms
On the Edit page, open the Timeline View Options dropdown at the left end of the timeline toolbar. Display Audio Waveforms is one of the buttons at the top. Enable it. The Resolve 21.1 manual notes that switching it off also minimizes the audio tracks, so one button explains both symptoms. Labels and positions have moved between versions before, so look for the matching waveform button if yours looks different.
That side effect is why the problem is easy to misread. Squashed audio tracks look like a height problem, when the waveform display is actually off. Turn the option on first, then judge the track height.
If the button already looks active, click it off and on once to redraw the display. If nothing changes, leave it on and move to the height controls. Clicking the same toggle again won't tell you anything new.
2. Increase the audio-track height
A waveform can be visible and still look blank when an audio track is too short. Open Timeline View Options again and drag the Audio track height slider to the right. It resizes every audio track at once and leaves the video tracks alone.
If only one track is cramped, hover over its top divider in the Track Header and drag. Resolve resizes that track on its own, which helps when dialogue needs a big waveform but music and ambience can stay compact.
Quiet recordings are another trap, since a low-level clip draws an almost flat line at any height. View > Zoom Audio Waveform scales the drawn waveform up without changing the track, and the Display Scaled Waveforms button in the same dropdown ties waveform size to track size. Check the timeline zoom too. A long clip on a long timeline squeezes transient detail sideways, so zoom closer before deciding Resolve failed to draw anything. Track height controls vertical detail; timeline zoom controls how much time fits across the visible width.
3. Compare the timeline with Audio Configuration
When one clip is blank, select it, open the File tab in the Inspector and expand Audio Configuration. The pane draws a composite waveform at the top and a separate lane for each channel, for up to 36 tracks. If the channels show here while the timeline stays blank, the fault sits in the timeline display or the waveform drawing, so leave the media file alone for now.
That comparison splits the problem in two:
- Waveforms appear in Audio Configuration: the clip has readable audio-channel data. Go back to the timeline display, track height and regeneration steps.
- Audio Configuration is also blank or the expected channel is disabled: look at that clip's channel format, enabled channels and source file. One unusual file doesn't justify changing every track in the project.
Audio Configuration doesn't show output routing. A channel can draw a perfectly good waveform while the speakers stay silent. If you see channel data but hear nothing, the no-audio guide is the better route.
4. Regenerate the waveform for one bad clip
If other clips draw normally and the selected clip has readable audio in the Inspector, rebuild its timeline waveform. Go to the Fairlight page, right-click the clip and choose Clip Operations > Regenerate Waveforms. Resolve's manual gives this command as the fix for a timeline clip whose waveform has gone missing.
Scope matters here. Regeneration fits the case where one timeline clip has lost its waveform. When every track is minimized or the global display button is off, start with those settings.
Give Resolve a moment to redraw a long or multichannel file before you click around again. If the waveform comes back, you're done. There's no need to convert the source, rebuild every cache or re-import the whole project.
5. Check Audio Configuration when only one file stays blank
If the clip remains blank after regeneration, go back to File Inspector > Audio Configuration and check that the expected channels are enabled and set to a sensible format. A stereo file can be read differently from a mono recording or a multichannel production file. The enable checkboxes only work on the Media Pool clip, and they're greyed out for a clip that's already in the timeline. Fix the source clip there, then edit it into the timeline again so the new channel layout comes across.
Don't diagnose by the filename extension. An M4A, MP3 or MOV label names a container or common file type, and it says little about the audio stream inside. If the file won't import cleanly or its channels don't show in Audio Configuration, the MP3 and AAC import guide covers local-file, protection, codec and safe-conversion checks.
Drop a second, known-readable audio clip into the same timeline. If it draws normally, keep the investigation on the first file. If both fail, go back to the global display and layout checks.
6. Reset the UI layout only when the controls are missing or displaced
If the timeline toolbar is clipped, panels are stuck in an odd arrangement or the display controls seem to have vanished, save the project and choose Workspace > Reset UI Layout. Blackmagic documents this command as the way back to the default layout.
This one fixes the workspace and leaves the audio as it is. It can bring hidden or displaced controls back, but it won't decode an unsupported audio stream or repair bus routing. Save it for after the direct display and clip checks.
7. Keep waveform display separate from silent playback
A waveform is a picture of the clip's audio. It doesn't prove that the track reaches the monitored bus, that the bus reaches your speakers, or that the operating system is using the output device you expect. It works the other way too: audio can play while the timeline waveform is hidden.
Use this quick branch:
- Sound plays: stay on this page and fix waveform visibility, height, source-channel display or regeneration.
- Sound does not play: use the no-audio signal-flow checklist.
- The file will not import or exposes no usable channel: use the audio import guide.
Fast waveform checklist
- Open Timeline View Options.
- Enable Display Audio Waveforms.
- Increase the Audio track height slider.
- Drag one track's top divider if only that track is cramped.
- Zoom closer on the timeline, and try View > Zoom Audio Waveform for quiet clips.
- Compare the clip in File Inspector > Audio Configuration.
- On Fairlight, use Clip Operations > Regenerate Waveforms for one blank clip.
- Use Workspace > Reset UI Layout only if the interface itself is out of place.
- If playback is silent, move to the dedicated no-audio guide.
Audio waveform FAQ
Why does DaVinci Resolve play audio but show no waveform?
Usually the waveform display is off, the audio tracks are minimized or too short, or one clip's waveform needs regenerating. Start with Timeline View Options and track height. Use Regenerate Waveforms only if one clip remains blank after that.
Where is Display Audio Waveforms in DaVinci Resolve?
Open the Timeline View Options dropdown at the left end of the Edit page timeline toolbar. Display Audio Waveforms is one of the buttons at the top, and the Audio track height slider sits in the same dropdown. If your version looks different, look for the matching waveform display button there.
Why is the waveform visible in the Inspector but not on the timeline?
It usually narrows the problem to timeline display or waveform drawing, because Audio Configuration can read the clip's channel data. Confirm Display Audio Waveforms, increase the track height, then regenerate the timeline clip on the Fairlight page.
Does deleting render cache fix missing audio waveforms?
It's not the first fix. Resolve has a direct Regenerate Waveforms command for a timeline clip whose waveform is missing. Check the global display and track height before you change or delete any generated media.
Can I regenerate waveforms from the Edit page?
Resolve's manual documents the command on the Fairlight page: right-click the affected clip and choose Clip Operations > Regenerate Waveforms. Fairlight works on the same timeline, so switching pages takes a second and your edit stays as it is. If the command sits somewhere else in your build, look for the current equivalent before you delete any cache.
For other visible Resolve problems, the Fix DaVinci Resolve troubleshooting hub sorts the next guide by symptom.
