CapCut export starts on a black frame (2026)
Trim the first black frames before export.
Cut the clip so the first frame already has a picture.
Preview the start on a phone, not only the timeline.
Do not leave a fade-from-black you did not add.
Export a five-second sample first.
Save the in-point as a preset.
Change one variable at a time and confirm what actually helped.
If a company policy is involved, rule that out before chasing client settings.
Write the working steps into a short checklist for next time.
Export or screenshot a good setup so reinstalls are faster.
If it still flakes, retest on a clean network such as phone hotspot.