Test the lights before your next attempt
Dark bands moving across the wall or repeated brightness pulses can make an otherwise readable climbing video distracting. If the pattern is present in the original recording, cropping or uploading again will not address the capture conditions. Start with a short test at the same wall, under the same lights, before committing a full session.
This is a filming checklist, not a promise of automatic repair. CruxCut is not presented here as a deflicker tool, and camera controls differ across phones, recording apps, and dedicated cameras.
Separate recorded flicker from a playback problem
Open the unchanged source file outside the editor. Look at a stationary patch of wall as well as the moving climber. Does the brightness pulse repeatedly, or do dark horizontal bands move through the picture? Compare the same moment in another available player. If the pattern appears only in one preview, do not conclude that it is baked into the recording.
If the issue starts only after saving or sharing, preserve the source and output as separate files and compare them at the same timestamp. A screen recording of a display is not a substitute for the source file: it introduces another camera or capture stage. If the actual issue is uneven motion rather than brightness, follow the separate playback-speed checklist.
Why gym lights can create bands
Artificial lighting can vary in brightness too quickly for you to notice directly. A camera samples that changing light over time, so the recording may reveal pulses or bands. Sony's movie-recording guidance describes horizontal banding or partial discoloration under flickering indoor lights. The visible pattern alone does not identify the exact light fixture or prove that your phone is defective.
Frame rate and shutter speed are different controls. Frame rate is how many frames are recorded per second; shutter speed determines the exposure time for each frame. Selecting 60 fps does not mean that exposure is 1/60 second. Automatic exposure can also choose a different shutter speed when the scene changes, so one successful recording mode is not a universal fix.
Make a small, repeatable comparison
- Choose a safe position. Keep your phone outside the landing zone and gym traffic. Do not add cables, lights, or a tripod where someone could fall or trip.
- Record a baseline. Film several seconds of the intended framing, including a plain wall patch and a small hand movement. Note the camera app, resolution, and frame rate.
- Change one available control. Try another normal recording frame rate or the camera's actual video anti-flicker option, if present. Keep position, lens, and lighting unchanged.
- Compare saved originals. Review brightness stability and the moving hand, not just the live camera preview. Label each file so you can reproduce the better result.
- Confirm with a short climbing attempt. Check that hands, feet, and movement remain readable before filming more.
Do not change resolution, frame rate, exposure, and location all at once. If the second clip looks better, you need to know which change you tested. High-frame-rate or slow-motion recording is not automatically better under the available light.
If your camera has video flicker controls
Use instructions for your exact model and recording mode. A still-photo anti-flicker setting may not apply to movies. Nikon's Z fc video manual offers Auto, 50 Hz, and 60 Hz choices, and advises testing both frequency options if Auto is ineffective and the supply frequency is unknown. That is a model-specific example, not a menu path guaranteed to exist on your phone.
Where manual shutter control exists, follow the camera manufacturer's lighting guidance and verify the result in a saved test. Nikon lists starting points such as 1/50 or 1/100 second for 50 Hz supply, and 1/60 or 1/125 second for 60 Hz supply. These are not universal LED settings: drivers, dimming, mixed fixtures, and available shutter steps can differ. Do not infer a fixture's behavior from the country alone.
A longer exposure can blur moving hands and feet; a shorter one can change motion rendering and may reveal more flicker. Judge both the lighting pattern and climbing readability. If your camera app does not expose shutter or frequency controls, do not hunt for a nonexistent switch. A different available recording mode or a safe change of filming location may be the more practical test.
If changing settings does not help
With gym permission, try a position lit more evenly by a different fixture or daylight. Keep the whole climber visible and follow the camera-placement checklist. Do not ask staff to alter facility lighting or place extra lights in other climbers' sightlines just for a clip.
If the original already contains strong bands, keep it as a training reference if movement is still visible. An edit may make the moment easier to review, but cropping, brightening, or repeated exporting is not evidence that the captured flicker has been repaired. If you try a separate repair tool, work on a copy and inspect for pulsing, lost detail, and altered hand edges. Keep the untouched original.
Before sharing or asking for help
- Compare the source, saved edit, and posted copy to identify where the pattern first appears.
- Record your device, camera app, recording mode, frame rate, and any manual shutter or flicker setting you actually used.
- Keep two short labeled test files with one controlled difference; do not describe an untested setting as the solution.
- Share only footage you have permission to share, without private conversations or identifiable bystanders who have not consented.
If brightness is stable but detail disappears only online, use the sharing-quality guide instead. Once the capture looks stable, make a vertical crop that preserves hands and feet and verify the saved file before publishing.
Sources and scope
Sony: Movie-recording basics explains frame rate, exposure, and indoor-light banding. Nikon Z fc: Flicker reduction documents its video frequency options, shutter examples, and limitations. These camera-specific references support the capture mechanism and test ideas; they do not establish equivalent controls in CruxCut or every phone.