How to analyze a baseball swing video on iPhone.
A useful hitting review does not begin with a verdict. It begins with a stable clip, one clear question, and the discipline to compare the same phase from the same angle.
Review one swing checkpoint at a time
Choose a clear coaching question before you add lines: for example, compare the setup or the same point near contact across two clips. Keep the camera angle similar so a perspective change is not mistaken for a technique change.
- Check that the hitter and bat stay in frame.
- Step each clip to the same checkpoint.
- Use one reference line or angle that answers the question.
- Save the context with the clip before sharing it with a coach.
Video review does not measure exit velocity or diagnose an injury. For pitching, use the delivery review guide.
Try this review in BaseballDraw
Import a clip from Photos or record in the app, then open hitting mode. Use the frame buttons to find contact. Choose Line or Circle to mark one visible reference, then Save Photo or Save Video to keep the result. Use comparison when you have a second clip from the same view.
BaseballDraw costs $7.99 once in the U.S., with every tool included. See the app workflow and screenshots or read the pricing details.
1. Choose one question before pressing play
Start with a specific question such as whether the head drifts during the stride, the front side opens before contact, or posture changes through rotation. Reviewing everything at once usually produces vague feedback.
2. Use a clip that preserves the whole movement
Keep the hitter, bat path area, plate area, and enough space for the follow-through visible. A stable side view is useful for posture and sequence; a rear or front view can help with direction and alignment.
3. Find the phase instead of scrubbing randomly
Step through load, stride, heel plant, contact, extension, and finish. Phase labels create a shared vocabulary, but always verify the actual frame because video timing and body-pose estimates can vary.
4. Add one visible checkpoint
Draw a posture line, head boundary, hip-depth guide, shoulder line, or direction cue. A simple annotation is more useful than a screen full of marks that compete for attention.
5. Use the pose overlay as a guide
A pose overlay can make joint relationships easier to see, especially when clothing and background reduce contrast. Treat it as a visual aid; a missed or shifted joint should be corrected by looking at the original video.
6. Compare like with like
Use similar camera height, distance, zoom, and phase when comparing two swings. A difference caused by camera geometry is not a mechanics change.
7. Export the exact evidence
Share the marked frame or short clip that supports your question. Include the drill, pitch type if known, intent, and what you want the viewer to evaluate.
Keep the observation separate from the explanation
| Question | What to save | What the clip cannot establish |
|---|---|---|
| Where is the head at contact in this view? | A circle at the setup reference and nearby contact frames from a fixed camera. | Whether the position caused a result or needs a correction. |
| Did a checkpoint change between two swings? | Same club/bat context, drill, camera position, and matching phase. | A fair comparison if the camera or drill changed. |
| Is this the instant of contact? | The last frame before visible contact and first after it, if the ball and bat are clear. | An exact contact instant that falls between frames or is hidden by blur. |
For example: “Tee drill · side view · same tripod mark · question: visible head position from setup to contact. Contact is between these two frames.” That is a record of the clip, not a claim about bat speed or the cause of a batted-ball result.
Date / athlete identifier: ___. Drill and intent: ___. Camera view and location: ___. Question: ___. Visible checkpoint: ___. What changed: ___. Blur or tracking uncertainty: ___. Comparable clip to record next: ___.
Compare the original video before trusting a body overlay. If a point follows the wrong joint, use a manual reference or another recording. When you need a mechanics change or interpretation, take the focused clip to a qualified coach.