How Camera Stability Scoring Selects B-Roll Clips

When you import clips into a project, Bitcut automatically analyzes the visual motion in each one and assigns a stability score. This score measures how steady the camera is throughout the clip — tripod shots score high, handheld shaky footage scores low. The Auto B-Roll feature uses this score to decide which clips are suitable as cutaway inserts during speech segments.

How It Works

Stability analysis examines the motion between consecutive frames in your clip. It measures how much the image shifts from one frame to the next across the entire duration, then produces a single score that represents overall camera steadiness.

  • High stability — the camera barely moves between frames. Typical of tripod shots, locked-off angles, and static scenic footage. These clips make excellent B-roll because they provide a calm visual break during speech.
  • Low stability — significant frame-to-frame movement. Typical of handheld footage, walking shots, and action sequences. These clips usually contain the main subject or action and are less suitable as background cutaways.

How Auto B-Roll Uses Stability

When you run Auto B-Roll Placement, Bitcut compares each available clip against a stability threshold. Only clips that score above the threshold are considered for automatic placement as cutaway inserts over silent sections of your timeline.

1

Clips are imported

When you add clips to your project, Bitcut runs stability analysis automatically in the background. No user action is needed.

2

Each clip gets a stability score

The analysis measures frame-to-frame motion and produces a score. Steady clips score high, shaky clips score low.

3

Auto B-Roll filters by score

When you trigger Auto B-Roll, only clips above the stability threshold are selected for placement. Shaky footage is skipped automatically.

What Scores High vs. Low

  • Tripod shots — locked camera on a tripod or flat surface. Near-perfect stability.
  • Slow pans and tilts — gentle, controlled camera movements. Moderate-to-high stability.
  • Handheld talking head — the main speaker filmed while walking or without stabilization. Low stability.
  • Action footage — fast movement, tracking shots, sports. Very low stability.
Fully automatic. You do not need to trigger stability analysis manually. It runs in the background as soon as clips are imported and the results are stored with the clip data. The score is only used internally by the Auto B-Roll feature.
Import dedicated B-roll footage. For the best Auto B-Roll results, include a few steady, visually interesting clips — scenic views, product close-ups, or detail shots filmed on a tripod. The more stable clips you provide, the more options Auto B-Roll has to fill silent gaps.