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Drop to 1080p at 30 fps, take the case off, stay out of the sun and don't charge while you film. What iOS does when the phone gets too hot, why a long take can fail to save, and Apple's temperature range.

High Efficiency records HEVC, Most Compatible records H.264. Measured on my own clips: about 60 MB a minute for 1080p in HEVC against 99 to 118 MB in H.264. When to switch, why files won't play, and how to convert a copy.

Record 9:16 and 16:9 together, cut 4:5 and 1:1 from the vertical file. A table of what every crop keeps, framing rules that survive all four ratios, and how to hand the files to a brand.

The iPhone records Dolby Vision HDR by default. Lose the HDR pixels but keep the HDR labels and skin and emojis go orange; play HDR as standard video and it goes grey. How to check a file and fix it.

Write to the clock at 2.5 words a second, so 70 words for a 30 second clip. The five beats with their seconds allocated, a six word hook, the six tells that make a draft sound read, one brand claim per script, and a shot named beside every line.

The iPhone falls back to a wider lens when the subject is closer than the telephoto can focus (40 cm in Apple's example) or the light is too low. Lock Camera, Macro Control and Enhanced Stabilization, which iPhones have each, and what they cost.

Auto FPS drops 30 fps to 24 fps in low light for 25% more light per frame. Why that judders, why a 24 fps clip repeats one frame in five in a 30 fps edit, how to check a clip, and when to turn it off.

48MP Main and Ultra Wide on the back, a 12MP Center Stage camera on the outer screen, and rear-camera selfies previewed on the outer display. Dual Capture is still one picture-in-picture file whose inset can't be moved after recording.

Crop to fill keeps 31.6% of the picture; black bars or a blurred fill keep all of it at 607 pixels wide. Step by step in iPhone Photos, iMovie and CapCut, which to use where, and why rotating doesn't convert anything.

Snapchat's Dual Camera gives one combined image, the iPhone's Dual Capture and Instagram's Dual are video only, and a front and back photo mode saves the selfie and the rear shot as two separate photos.

A 9:16 to 16:9 crop keeps 31.6% of the picture, and a centred crop starts 16 pixels below a correctly framed eyeline. The pixel arithmetic, what crop and pillarbox each cost, where auto-reframe fails, and how to frame one take so both shapes survive.

Some Galaxy phones do it in the stock camera with Dual recording; Pixel Camera can't. Which phones can run both cameras at once, why it's down to the hardware, and how to get your face and the scene as two separate files.

Walk at half pace with the phone at 1.4 metres, lock exposure, white balance and focus before you start, and time each room to its own windows. Plus the 31.6% of the width a vertical crop keeps, and the seven shots to get after the walk.

Lens at eye level 1.5 to 2 metres away, five angles that work, a five second test clip to check framing, AE/AF Lock on your mark, and starting the take from a volume button, AirPods or an Apple Watch. Plus a ten-shot list.

Nine faceless shot types for a phone, from hands and POV to silhouettes and screen recordings, how to frame each so your face stays out, and shot lists for cafe, desk and kitchen accounts.

Turn the phone sideways in Video mode before you press record. What Lock Rotation does, the test clip that catches a sideways recording, and the four taps in Photos that fix one.

Samsung Camera and Pixel Camera record one shape per take. Cropping a vertical out of 1080p landscape keeps 31.6% of the width; 4K leaves you 1215×2160 to work with. The three options, with the arithmetic.

4K is exactly four times the pixels of 1080p. The sum that decides it: a full-height vertical crop of a 4K frame is 1215 px wide, the same crop of 1080p is 608 px, and 608 px has to be stretched 78% to fill a phone screen.

Apple's own ceiling is 4K Dolby Vision at 30 fps on six models. The composited frame, the 32% of the width you keep when you crop it for a second platform, and the one case where Dual Capture beats every app on the phone.

One is free and was updated two days ago. The other costs $39.99 a year and is 324 days stale on Android, where it rates 2.3 stars against 4.6. Plus the one case where Filmic Pro still wins.

Where to place each phone, the four settings to match across both, clapping for sync when 30fps is really 29.97, the audio setup that actually works, and the storage and heat maths for a 90 minute record.

Near-identical names from the same publishers, annual prices from $29.99 to $159.99, a 21x spread in app size, and two heavily-rated apps last updated in 2022 and 2023.

Still updated on iPhone, 10 months stale on Android, subscription only, 3.7 stars. The acquisition, the layoffs, and the alternatives, with every figure read off the store listings.

Open Camera, Blackmagic Camera and Pro mode compared, the settings to change first, and the Camera2 reason your phone may not offer half of them.

Four tables and a checklist: which lens and frame rate for every situation, where to stand in any light, what each setting costs you when it is wrong, and what to do about what you are seeing.

Why batch days run long: splitting decide, set up, film and cut across different days, and getting more than one post out of each setup.

The tells are pacing and emphasis, not eye movement. Writing a script that sounds spoken, and setting the prompter so the gaze offset disappears.

Bitrate, codec, HEVC, log, LUTs, handles, key light, depth of field, and every label on your phone's camera screen, without the tutorial voice.

Why bright sun makes motion judder and how much ND glass fixes it, exposing for a backlit face, where to stand at midday, and stopping wind from wrecking your audio.

One wins by being close, the other by being aimed. Where each fails, which handles wind and movement, and which to buy first.

Grip and elbow position, what to brace against, walking without bounce, what stabilisation costs you, and when a gimbal is actually worth it.

What frame rate actually changes, the slow motion maths, the light cost of shooting 60, and how to kill flicker under artificial light.

Repurposing starts at capture. What the crop costs, how to build cut points while filming, and how to adapt one recording per platform.

Why low light photography advice fails for video, what you can actually change, and a workable setup for shooting in the dark.

Four ways to record your face and the source together on one phone, where to put the face cam so platforms do not cover it, and the audio fix almost nobody covers.

Shutter angle, ISO, white balance, frame rate and codecs in the free Blackmagic Camera app, explained in plain language with a starting setup that works.

Two cameras at once versus two aspect ratios at once. What DoubleTake still does well, where it has fallen behind, and which job each app is actually for.

Camera distance and height, three framings that work with a single camera, the audio fix that matters more than the picture, and lighting two people from one source.

One lamp bounced off a wall, the 45 degree position, matching mixed colour temperatures, and putting depth behind you. No kit required.

A vertical crop keeps under a third of a wide frame's width. The centre-third rule, the three camera moves that survive both crops, shot length, and the settings to lock.

Camera height, subject distance, background depth, lighting angle, locked settings and mic placement: the six causes of the webcam look, and the free fix for each.

Cinema image quality and DaVinci grading versus getting both vertical and horizontal from one take. Two different jobs, compared honestly.

Which platforms want vertical vs horizontal, when each format wins, and how to stop choosing by capturing both from one take.

MixCam, Dualgram, DoubleTake, DualShot Recorder and ContentCam. Which do the front/back effect, which do the one-take dual-format, and which does both, on both platforms.

What the effect is, how to record front and back at once, and how to make it look good, in portrait and landscape.

Lighting, white balance, the 180 degree shutter rule, framing, stabilisation and audio, the fundamentals that beat any gear upgrade.

Capture a place or a plate once and post it everywhere. Shot lists, settings and a workflow that doesn't double your filming time.

Your face and what you're filming, in one take: reactions, unboxings and POV without a second phone, plus how to light, frame and mic it.

The viral dual-format app, head to head with ContentCam. Crop quality, manual controls, Android, teleprompter, ratings and pricing, concessions included.

The three ways to get both formats from one shoot, why cropping in post loses framing, and how full-sensor capture fixes it.

Interval maths, stability, exposure lock, and getting a vertical and a horizontal timelapse from one session.

Reading a script on camera without looking like you're reading a script: setup, eye-line, scroll speed, and script formatting that works.

What each control actually does, when auto fails, the 180° shutter rule, and a white balance cheat sheet in kelvin.

Framing one shot so both the 9:16 and 16:9 versions work, platform format specs, and a workflow that doesn't double your filming time.

An honest comparison of dual-format recording apps, including ours. Crop approaches, teleprompters, platforms and pricing, in one table.