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Chronos 4K12 Camera Software Release Notes
Chronos 4K12 Camera Software Release Notes

Notes on improvements, limitations, and future updates of the camera operating software found on the Chronos 4K12 high-speed camera

Jax Hughes avatar
Written by Jax Hughes
Updated over a month ago

Installing Software Updates

Download the software update package 1.6.0 here:

Online-software update procedure video

The following section provides a step-by-step description of the 4K12’s online software update procedure.

  1. Download the software update package from the link provided above.

  2. For Windows, Mac and Linux, download and install the "Raspberry Pi Imager" software from https://www.raspberrypi.com/software/

  3. Ensure the camera is powered off. Use a Phillips screwdriver to remove the Service Door on the side of the camera to access the microSD card.

    Note: The microSD card for version 1.6 should have a minimum capacity of 32GB.

  4. Press the microSD card inwards to eject it, and then remove it from the camera.

  5. Insert the microSD card into your computer's SD card slot. A microSD to SD card adapter might be required for this.

  6. Launch the Raspberry Pi Imager program.

  7. Click the "CHOOSE OS" button, and select the "Use custom" option at the bottom of the list.

  8. Select the software update file downloaded in step #1.

  9. Click the "Choose Storage" button, and then select the microSD card.

  10. Click the "Next" button, and then select the "No" button in the popup labeled "Use OS customization?"

  11. Click "Yes" to begin writing the update to the microSD card. This process will typically require 15 to 30 minutes to write & verify. The verification step is optional but recommended.

  12. A "Write Successful" popup will appear when the Raspberry Pi Imager is completed. Remove the microSD card from your computer and re-insert it to the camera.

  13. Reattach the Service Door removed in step #3, and then reconnect the power supply to the camera.

  14. Verify the camera starts up successfully. In the About tab of the System Settings screen, the Software Version should now read 1.6.0.


Software Version 1.6

Released on October 1, 2024

Improvements

  • Advanced Trigger Options

    • Toggle

    • Record End

    • Trigger delay settings, in units of time and frames

  • IRIG-B time code receiver and frame timestamping

  • Text Overlays for frame metadata

  • Persistent Settings across reboots

  • Frame Sync Output

Known Issues and Current Software Limitations

  • Playback of recorded footage via HDMI out inactive

  • HDMI output is unscaled, HDMI monitor must support the exact record resolution

  • Gamma correction is not applied to built-in LCD and HDMI outputs

  • USB-C Port 1 Device Mode direct to computer connection incompatible with Windows

  • USB-C Network Adapters must be reconnected to camera on camera power cycle

  • Performing a forced shutdown by holding the power button for 10 seconds will restart the camera if the button is not released immediately after 10 seconds

  • Aliasing may appear when high resolution video is scaled to the built-in LCD

  • Windows Media Player is unable to decode H.264 and H.265 videos due to a lack of support for 4:2:2 video.
    Workaround: Use VLC Media player when playing MPEG-4 video files


Software Version 1.5.2

Released June 24, 2024

Download the software update package 1.5.2 here:

Improvements

  • Changing HDMI output resolutions is more reliable and does not require physically reconnecting cable to camera

  • Bug fix for intermittent artifacts visible at the bottom of the frame in compressed H.264 and H.265 footage at small resolutions

  • KT Logo now appears on boot

  • LCD is disabled prior to video feed in shutdown, LCD no longer shows RGB screen for a few seconds when shutting down

  • Network share credential text inputs are not deleted on invalid credentials entry

  • Added option to disable calibration (dark frame subtraction) to gain slight increase in sensitivity in low light conditions, ie. 1280x96 @ 20,000 FPS
    Procedure: Settings → Factory → Enter service password “4242” → Check Disable Calibration → Restart camera

  • New Power Management System update wizard for future firmware updates

  • SD cards with multiple partitions can now be reformatted such that all partitions are removed and the entire SD card is formatted to have one single partition

  • Added Select Save Location button to System Settings → General screen to enable easier selection of save destination when using the auto-save feature

  • Added reference table containing supported resolutions and maximum frame rates to the Record Settings screen

Known Issues and Current Software Limitations

  • Playback of recorded footage via HDMI out inactive

  • HDMI output is unscaled, HDMI monitor must support the exact record resolution

  • Gamma correction is not applied to built-in LCD and HDMI outputs

  • USB-C Port 1 Device Mode direct to computer connection incompatible with Windows

  • USB-C Network Adapters must be reconnected to camera on camera power cycle

  • Performing a forced shutdown by holding the power button for 10 seconds will restart the camera if the button is not released immediately after 10 seconds

  • Aliasing may appear when high resolution video is scaled to the built-in LCD

  • Windows Media Player is unable to decode H.264 and H.265 videos due to a lack of support for 4:2:2 video.
    Workaround: Use VLC Media player when playing MPEG-4 video files



Software Version 1.5.0

Released May 27, 2024

Improvements

  • 30% frame rate increase in 10-bit mode for 4K and UHD resolutions

  • Longer record durations in 10-bit and 12-bit modes

  • Addition of compressed H.264 and H.265 save formats with quality/file size adjustability

  • Ability to set USB-C Port 1 as Device Mode, enabling direct to computer connection to copy files from internal 1TB NVMe SSD to computer (MacOS, Linux, iOS, Android)

  • Improved detection of monitors connected via HDMI

  • Fixed bugs for DNG file outputs at resolutions: 384x256, 384x96, 256x160

Current Software Limitations & Known Issues

  • Playback of recorded footage via HDMI out is inactive

  • HDMI output in live mode is unscaled, monitor must support the exact record resolution

  • Gamma correction is not applied to built-in LCD and HDMI outputs

  • LCD Backlight is not enabled immediately on power up, making the KT logo appear dimly lit as the camera is booting

  • USB-C Port 1 Device Mode direct to computer connection incompatible with Windows

  • USB-C Network Adapters must be reconnected to camera on camera power cycle

  • Performing a forced shutdown by holding the power button for 10 seconds will restart the camera if the button is not released immediately after 10 seconds

  • Aliasing may appear when high resolution video is scaled to the built-in LCD

  • Horizontal line artifacts visible in compressed H.264 and H.265 footage at low

    resolutions: 384x256, 384x96, 256x160

  • Viewfinder frame rate on built-in LCD decreases in 10-bit and 12-bit record modes

  • Windows Media Player is unable to decode H.264 and H.265 videos due to a lack of support for 4:2:2 video. Please consider using VLC Media Player to play MPEG-4 files from the camera.



Release dates of software updates are also applicable to factory-installed software. If your Chronos 4K12 was ordered on or after the release date denoted above, it will contain the updates as standard.

To check your camera's software version, navigate to Settings -> About, then denote the Software Version number.


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