Goalie Analysis · camera guide

Film your goalie from behind the net

One phone on the glass behind your goalie's net, one video per period. From that view Goalie Analysis can measure angle, depth and squareness on every shot. The rink's side cameras can't show that.

Everything circled has to be in the picture. The shaded area is roughly what an ultra-wide lens sees from behind the net.

What you need

A phoneOne with an ultra-wide lens and a manual video mode, where you can set shutter speed and frame rate yourself. On a Samsung Galaxy that's Pro Video.
A suction mountA pump-style mount made for glass. Clip a tether from the mount to the phone so it can't drop onto the ice.
A power bank10,000–20,000 mAh and a cable. Cold rinks drain batteries fast.
Free spaceRoughly 2–4 GB per period at 1080p, 8–12 GB at 4K. Clear the phone before the game.

Camera settings

Set these once and leave them. The phone's automatic mode blurs the puck, which is the one thing the video has to show.

Lens	Ultra-wide (0.5×)	Gets the net and both ends of the blue line in one picture.
Frame rate	60 fps	At 30 fps a hard shot crosses the crease between two frames.
Shutter speed	1/1000 s or faster	A sharp puck matters more than a clean picture. A grainy picture is fine.
Resolution	4K, or 1080p	4K if you have the space. 1080p works.
Focus	Manual, on the net	Stops the camera hunting when players skate past.
Stabilization	Off	It crops and bends the edges of the picture, which throws off the measurements.
Orientation	Landscape	Sideways, level with the ice.
Phone	Do Not Disturb	A call or alarm can stop the recording.

Where to put it

On the glass directly behind your goalie's net, centered on the net, as high as you can reach while still seeing the phone's screen. Higher is better: the ice opens up and players block less of it. Keep it level.

Before you let go, check the picture has all of these:

Both posts, where they meet the ice
The whole blue crease
Both faceoff dots in the zone
The blue line where it meets the left boards and the right boards

These are the marks Goalie Analysis measures the ice from. If the blue line is cut off at the boards, it can still read angle, but not depth in feet.

Every period

Mount, check the picture, start recording before the puck drops.
Leave it alone until the period ends. If it gets bumped or moved, note the game clock. The tool can handle a camera that moved, but it needs to know when.
Stop recording at the buzzer. One video per period.
Follow your goalie. If the teams switch ends, move the phone to the other net during the intermission and start again from step 1.

After the game

Copy the videos off the phone and name each one with the date, the game and the period:

2026-09-20 Freeze v Reston P1.mp4

Goalie Analysis reads the period from the P1, P2, P3 or OT in the name, so notes from every period land in one game. Open the videos on a laptop or a large iPad. If Chrome shows a black picture on 4K video, use Safari or convert the file to H.264.

At the rink

Keep the phone out of spectators' line of sight, and take it with you after every period. If rink staff ask you to take it down, take it down.