In many respects, the X-T4's video spec is very similar to that of the X-T3. However, the provision of in-body stabilization significantly and a larger battery significantly changes the way it can be used.

Key Takeaways

  • Excellent video quality, now with stabilization
  • IS system seems well implemented, letting you tell the camera when you want a completely locked-off shot
  • 4K capture for around 30 minutes (20 minutes for frame rates above 30p)
  • Small interface improvements make it easier to shoot with
  • Audio monitoring via a dongle means always having to remember a small, fiddly accessory
  • Still no AF Tracking option in video - it's all area, specified area or face-detection

Video capabilities

For the most part, the X-T4's video capture options match those of the X-T3, giving you some really high-end capture options and excellent image quality. On this camera you gain the option to record the more web-friendly AAC audio in the camera's 8-bit H.264 modes, rather than Linear PCM.

4K video can be captured for up to around 30 minutes or 20 minutes for 50 and 60p shooting.

4K Video Modes

Resolution Frame Rate Crop Bitrate Chroma sub-sampling Compression type Codec
UHD/DCI* 29.97, 25, 24, 23.98

1 400 Mbps 4:2:0 10-bit** All-I H.265
Long GOP
59.94, 50 1.18 200 Mbps H.265 or H.264**
29.97, 25, 24, 23.98 1
59.94, 50 1.18 100 Mbps
29.97, 25, 24, 23.98 1

*DCI 59.94p/50p cannot be recorded using the H.264 codec
**H.264 mode reduces all video to 8-bit 4:2:0 (output is still 10-bit 4:2:2).

Full HD Modes

Resolution Frame Rate Crop Bitrate Chroma sub-sampling Compression type Codec
16:9 (1920 x 1080)

17:9 (2048 x 1080)
59.94, 50, 29.97, 25, 24, 23.98

1 200 Mbps 4:2:0 10-bit* All-I/Long GOP H.265 or H.264*
59.94, 50, 29.97, 25, 24, 23.98 1 100 Mbps

*Switching to H.264 mode reduces all video to 8-bit 4:2:0 (output is still 10-bit 4:2:2).

Image stabilization

The biggest difference between the X-T3 and X-T4 is that the new camera offers built-in stabilization. It's based around a new five-axis mechanism and our initial impressions are that it stabilizes video shooting very effectively without trying to over-correct intentional camera movements.

More extreme stabilization can be applied by adding digital IS, which imposes an additional 10% crop:

Crop Crop with Digital IS
4K up to 30p Full width 1.1x
4K up to 60p 1.18x 1.29x
1080 up to 60p Full width 1.1x
1080 high-speed mode 1.29x

In addition, there's a 'Boost IS' mode. This can be applied on top of whichever IS mode you're using, and tells the camera that you're trying to lock-off your shot, meaning it provides its maximum possible correction against all movement (rather than assessing whether the camera movement might be intentional).

In addition, the camera offers a 'Fix Movie Crop Magnification' option that imposes a 1.29x crop on all the camera's video modes, meaning that you can shoot everything from high-speed 1080 and stabilized 4K/60p through to 4K/24p with consistent framing. We'll look at the quality of these crop modes as part of our full review.

240 fps 1080 capture

One of the only core spec changes, relative to the X-T3 is the addition of up to 240 fps shooting in Full HD mode.

The high-speed 1080 mode is a separate menu option and creates footage output as anything from 1/4 speed 60p footage down to 1/10th speed 24p output. PAL users get 200 or 100 fps capture slowed down to 50 or 25p.

Interface improvements

Along with a dedicated control for switching between stills and video modes, the X-T4 features separate menus for the two modes. The video mode doesn't need a tab dedicated to flash control which means the Audio and Time Code settings have been broken out and given their own tabs in the video menu. This is an excellent move, since it frees up space in both menus, making them less densely packed and making them easier to navigate.

Splitting the movie and stills menus makes both easier to navigate

The X-T4 also gets its own Q.Menu, that's configured independently from the version in stills mode. Just as in stills mode, you can configure the Q Menu to offer 4, 8, 12 or 16 settings, and whether you want it to appear on a grey or transparent background.

The separated stills and video menus also mean there are separate 'My Menu' tabs that can be populated with the settings you change semi-regularly. The only major piece of customization that's carried over between the two modes is button configuration.

Movie Optimized Control

The camera's touchscreen-led user interface for video shooting has been renamed and refreshed in the X-T4. It's now called 'Movie Optimized Control' rather than Movie Silent Control, with the key distinction being that you can now use the camera's control dials in this mode, if you wish.

Note the little dial icon at the top of the screen: you can now change settings with the camera's command dials when using Movie Optimized Control

We'd generally recommend using Movie Optimized Control because it takes the exposure settings away from the dedicated dials, meaning that you can maintain separate settings for movie and stills shooting.

The touchscreen interface has been made slightly larger, though we still find it a little fiddly but, as before, you can use the joystick to navigate the interface if you prefer. The option to use the camera's command dials is a hugely positive step, meaning you can, for instance, set shutter speed in the touchscreen menu but have aperture on the front dial and ISO on the rear dial for immediate access, without having any impact on the camera's stills setup.

Focus Check Lock

Another small addition is a 'Focus Check Lock' option. This maintains the magnified 'Focus Check' view when you start recording, so that it doesn't immediately jump back out to the whole-image view.

Even with the option engaged, you can still hit a button to jump back from this punched-in view whenever you wish.

F-Log View Assist

The X-T4 also gains the ability to show a corrected preview when shooting or playing-back F-Log footage. This applies a gamma correction to the EVF and LCD, making it easier to visualize the end result. It doesn't appear to apply a gamut/saturation adjustment, though, so the image with View Assist turned on looks like a slightly more desaturated version of Eterna.

F-Log View Assist can be assigned to a custom button to let you toggle it on and off as you set up your shot.

Line-level mic input

The X-T4 now has an option to accept line-level audio input, instead of the level of an un-powered mic. It's a menu option that expands the range of audio sources that can be used with the X-T4.

Backup recording

The X-T4 lets you configure how its two slots are used with separate options for stills and video. In movie mode you can shoot sequentially to one card then the other, or to both simultaneously, to provide redundancy.

You can set the camera up to shoot movies to one card and stills to the other, but if either card fills up, it'll start recording everything to the card that still has space remaining.