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Troubleshooting

Why the preview won't load or play

A preview that stays blank or never starts playing is usually a browser resource or clip-specific issue rather than something wrong with your whole project, so isolate it before you assume you need to rebuild anything.

Last reviewed September 20, 2026

Preview playback happens entirely in your browser tab, rendering your arranged clips live rather than pulling a pre-made video from a server. That means the same things that slow down any browser-based tool — memory pressure, too many tabs, an overloaded project — can keep a preview from loading.

Likely cause: the browser tab is overloaded

Projects with many long, high-resolution clips ask more of the tab than a handful of short ones. If the preview loads fine on a small project but stalls on a large one, the tab is running short on memory or processing headroom, not encountering a bug.

Second cause: one specific clip in the sequence

If the preview loads but then stops or goes blank at a consistent point, the clip at that position in your sequence is worth checking directly in the inspector — it may be a format edge case or a partially corrupted file rather than a preview-wide problem.

Steps to isolate and fix it

  1. Refresh the tab

    Your project saves as you go, so refreshing won't lose your work and often clears a stuck browser state.

  2. Close other tabs and apps

    Free up memory, especially if you have several heavy tabs or apps open alongside ReelWorkshop.

  3. Test a smaller version of the sequence

    Temporarily remove clips or shorten the plan to see whether the preview loads for a smaller set, which tells you whether it's a scale issue.

  4. Check the clip where it stops

    If it always fails at the same point, open that specific clip in the inspector to test it in isolation.

Try a different browser or device if it persists

If refreshing and closing tabs doesn't help, testing in a different browser or on a different device quickly tells you whether the issue is specific to your current setup.

What preview problems don't affect

A preview issue doesn't put your imported clips, trims or edit plans at risk — those are saved independently of whether the live preview is currently rendering smoothly, so there's no urgency to work around it by rebuilding your project from scratch.

When to just export instead

If preview keeps failing on a large finished sequence but you're confident in the arrangement, exporting is a separate process from preview and may complete successfully even when the live preview is struggling under the same project's size — though it's worth resolving the underlying resource pressure first if you plan to keep editing.

Keep reading

TroubleshootingWhy the preview stutters during playbackWhy live preview in ReelWorkshop can stutter or drop frames during playback, and how to get smoother scrubbing and review without it affecting your export.How-toPreviewing your compilation before you exportHow live preview works in ReelWorkshop and how to use it to catch pacing and ordering problems before spending export minutes on a render.TroubleshootingWhy imports are taking a long timeWhy importing clips into ReelWorkshop can be slow, what's actually happening during that time, and practical ways to speed it up.GuidesWhat editing a compilation entirely in your browser actually looks likeHow ReelWorkshop's browser-based editing and rendering works, what stays local to your device, and what to expect for performance and limits.TroubleshootingWhy the audio jumps or clashes between clipsWhy source audio sounds jarring or mismatched from clip to clip in a ReelWorkshop compilation, and how to decide between keeping and muting it.