Frequently Asked Questions

If you don't find the answers you're looking for, head over to our support page.


What languages does Kyno support?

Currently we have internationalizations for English, German, Spanish and French. The language of the user interface will be set to your operating system's language setting by default.

You can also change the language in Kyno's preferences.

A change of language will require a restart of Kyno for the changes to come into effect.

Is Kyno a Media Asset Management System?

Well, sort of. Many of the features like tagging, descriptive metadata support and filtering give it a MAM kind of feel but its scope is currently rather a very light-weight support of production processes rather than long-term archival, although people may still find it useful for that as well. The main point is, that is is much more light-weight than typical MAMs because it does not require an import/ingest step before you can do something useful with your material. That means there is not really a concept of "inside" or "outside" of Kyno, which also means there is no global search of all content Kyno has ever seen.

Where does Kyno store its data?

Kyno Metadata

The most valuable data - everything you add, like ratings, tags, text metadata (title, description, scene, shot etc.), markers, subclips - is stored in XML files in hidden directories located in the same directory as the media file they belong to. This makes it easy to share and move around folders while keeping all the metadata you added in Kyno intact.

Also see Does Kyno write the metadata I add into the files?


General settings, custom transcoding presets, naming presets, your license data etc. are stored in your computer's user directory, make sure these are included in your routine backup task to restore Kyno to the way you've set it up:

  • macOS: <user-home>/Library/Kyno/
  • Windows: <user-home>\AppData\Roaming\Kyno\


Cache data like extracted technical metadata and thumbnails is stored in the following directories. Deleting them will only affect the performance of Kyno the next time you browse those files but you will not lose any data:

  • macOS: <user-home>/Library/Caches/Kyno
  • Windows: <user-home>\AppData\Local\Kyno\

Log files

Kyno writes a log file that you can send to us for problem analysis (it can also optionally be sent via Kyno - Send Kyno Feedback..) to the following locations:

  • macOS: <user-home>/Library/Logs/Kyno (press Cmd-Shift-G and paste ~/Library/Logs/Kyno to go there)
  • Windows: <user-home>\AppData\Roaming\Kyno\Logs

Does Kyno write the metadata I add into the files?

No, currently we do not change the files at all, when editing metadata for several reasons, among others:

  • it is not supported for a number of file formats and one goal of ours is to support a wide range of file formats and provide a consistent user experience for all of them
  • In some cases it requires rewriting the file

We might revisit this in the future. Let us know if this poses a problem for you and why.

Also take a look at Where does Kyno store its data?

General Functionality

Which RAW formats does Kyno support?

We currently support RED RAW R3D and Blackmagic RAW and we're looking at ProRes RAW, ARRIRAW, Canon Cinema RAW Light and Adobe DNG next.

Many image RAW formats are also supported, get in touch if you're missing a certain one!

For which codecs does Kyno support hardware/GPU acceleration?


Player (decoder only)
  • H264, zero-copy
  • HEVC, zero-copy
  • REDRAW. CPU decoding, hardware accelerated debayering (cuda and opencl)
  • BRAW, not zero-copy but gpu-internal
  • H264 encoder
  • HEVC encoder
  • REDRAW decoder
  • BRAW decoder


Player (decoder only)
  • H264
  • HEVC
  • BRAW
  • REDRAW decoder
  • BRAW decoder


  • H264 and HEVC decoders on macOS use VideoToolbox API for hardware acceleration
  • H264 and HEVC decoders on Windows use Direct3D 11 for hardware acceleration
  • BRAW decoder supports Cuda, Metal and OpenCL
  • REDRAW decoder supports Cuda and OpenCL

Can I bookmark frequently used folders?

Yes. You can do that by either dragging the folder into the workspace section or using the menu above the tree (cog icon) and select "Add folder to workspace". This is essentially like a bookmark or favourite in Finder.

The great thing is, you can even do that for removable drives/sd cards and when you disconnect the drive, the bookmark will remain in the workspace tree and become disconnected and then become reconnected automatically once you reconnect the respective drive.

Does Kyno manage sound libraries?

Yes, it does. We are still working on visual waveform support for the player but some of our customers already use it for organizing massive sound libraries and for subclipping and batch conversions.

Why doesn't Kyno display all files in the browse view?

It is a conscious decision to not show everything but restrict it to video, audio and image files because we do not strive to be a finder replacement but a tool focused on certain types of media files. We know this is a grey area and that in some cases it would be nice to also see project-related (e.g. word) document, so we may revisit that in the future but not likely very soon, so don't hold your breath.

However, if you run into a certain video, audio or image file type, we do not display, please report this and in most cases we will try to fix it.

Licensing and Sales

Can I use Kyno's single-user license on more than one computer?

Yes. You can install a personal license of Kyno on two computers for use by one person. You can even install it on both Mac & Windows machines you own with the same license. You are not allowed to use it on multiple computers at the same time or by different persons. If Kyno detects another Kyno instance running with the same single-user license, it will refuse to start. So nothing keeps you from using it on your laptop when you're on set and later on your edit station in post with one single-user license.

Note that this is different for per-seat licenses such as our 5-seat bundle. Per-seat licenses can only be activated on one computer per seat purchased, but they come with higher volume discounts and are easier to manage as they're bundled under a single serial number and allow reassigning to another person in a changing team.

How do I move an activation from one computer to another

Open Kyno on your old computer and choose Kyno (or Help) - Show License Info - Deactivate License. Once the seat is deactivated you can activate your license on a different machine.

In case you've lost access to your old Kyno installation, just get in touch with our support team to deactivate that computer, ideally giving the model and operating system of the machine in question.

How long is my license valid?

Your license is valid for a year from the date you purchase it. For example, if you purchase your license on 4th April, 2018, you’ll get regular updates until 4th April, 2019. To receive updates after that date, you’ll need to renew your license.

What happens if I don’t renew my license?

If you don’t want to renew your license after it expires, you can continue to use the version of Kyno that you have, for as long as you want, but you won’t be able to receive any further updates. If you decide you want to renew at a later date, that’s fine — you’re welcome back at any time.

Technical Support

How do I completely uninstall Kyno?

On macOS

Delete the following folders from your computer:

  • /Applications/
  • <user-home>/Library/Caches/Kyno
  • <user-home>/Library/Logs/Kyno

Remove the following folder only if you do not want to keep your settings:

  • <user-home>/Library/Kyno

On Windows

  • Choose "Add or remove programs" from the Windows search
  • Select Kyno and choose "Uninstall"
  • Follow the instructions in the window that opens

Additionally remove the following folders:

  • <user-home>\AppData\Local\Kyno
  • <user-home>\AppData\Roaming\Kyno\Logs

Remove the following folder only if you do not want to keep your settings:

  • <user-home>/AppData/Roaming/Kyno

How do I send you a sample file for a bug report?

Being able to reproduce a problem with a concrete video-/audio-/image-file helps us a lot in understanding and fixing a certain problem.

Please send us the smallest file you have that exposes a certain problem and send it to us via a cloud or transfer service such as Dropbox, Google Drive, Amazon, Mega, WeTransfer to the email address

Or get in touch with us to receive a passcode for our upload portal at:

Also let us know, if there are any restrictions regarding the use of the file, i.e. if we are allowed to use the file for internal testing in the future.


A media file does not show up in Kyno but I know it's there

If it is a file that is recognized as a media file, this may happen in rare cases for a number of reasons:

  1. you copied/moved the file using another tool and Kyno missed the file system event or they are deactivated on your system or network drive
  2. Kyno's internal index somehow got into a stale state

To fix this, first try to hit the refresh button in the bottom right corner.

If that doesn't work

  • open "Preferences ..." in the menu
  • hit the "Clear temporary data" button.
  • Optionally deselect the first checkbox ("Cache"), because the cache normally is not the problem and removing it will delete thumbnails and technical metadata, making Kyno a bit slower when looking at folders/files that were already opened in Kyno
  • Hit "OK"
  • Go to the folder again and check if the file is there
  • Submit a bug report via the "Send Kyno Feedback..." option (optional)

A video/audio file doesn't play, has missing metadata or behaves weirdly

Please file a ticket describing what exactly does not work with the file and make a sample available, if possible. If it’s officially unsupported, you can always ask us to support a given format. Your chances for that to happen are increased if you provide a sample file we can use for testing. There are no guarantees however. There may be specific reasons why it is not supported.

I can't access devices or folders and they're marked with a no-access symbol on macOS

Starting with macOS Catalina (10.15) you have to give certain permissions to Kyno in order to be able to access devices. The application should prompt you on first launch after upgrading to Catalina to get permissions for accessing removable volumes, downloads, documents and desktop folders. If you don't see these dialogs or want to change the settings go to:

System preferences - Security & Privacy - Privacy - Files and Folders - Kyno

Make sure the necessary permissions for Kyno are set:

Kyno doesn't launch and I don't know what else to do

If Kyno doesn't start at all or displays a nasty looking error dialog at startup, you should contact for help.

When contacting us, please include a copy of your log files in your email so we can analyze the problem straight away.

You can find your log files in the following locations:

  • macOS: <user-home>/Library/Logs/Kyno (press Cmd-Shift-G and paste ~/Library/Logs/Kyno to go there)
  • Windows: <user-home>\AppData\Roaming\Kyno\Logs

Zip all files or the whole folder and attach it to your support email and we'll get back to you.

My metadata like ratings, tags and markers are gone

A likely cause for this is that you or someone on your team as moved or renamed a file outside of Kyno - for example in Finder or File Explorer.

Kyno keeps this kind of metadata in a different place and if you move your files outside of Kyno, it loses the connection between the files and metadata. Move the files back and then move them again in Kyno.

With Kyno 1.8 we've released a feature that allows you to find metadata that is no longer associated with a file. You can find it in the app menu under File - Find Lost Metadata... The procedure will generate an XML file that you can import using File - Import Metadata...

Another cause for loss of metadata we've seen is other applications ignoring hidden files when copying files from one drive to another. Always make sure those hidden .LP_Store directories are copied along with your media.

My removable drives (SSD/SD card) are not readable in Kyno (macOS)

Your external drives may be displayed with this icon after upgrading to macOS Catalina or later:

Please check the systems's security preferences for Kyno. It's in System Preferences... - Security & Privacy - Privacy - Files and Folders. Make sure everything including Removable Volumes are checked:

It may also help to empty your search index in Kyno - Preferences - General - Clear temporary data (check search index only).

Not all metadata gets transferred to Premiere Pro

If you're running Kyno 1.6 or earlier you may notice that some metadata is not sent to Premiere Pro, because Kyno used to rely on FCP7-XML to transfer metadata to Premiere Pro.

Kyno 1.7 introduced XMP support that supports the full range of metadata, make sure to check the box in the Send-To Premiere Pro dialog.

Something weird happens. What do I do?

Here are some things that may help in some cases:

  • Clear the cache/index of the application in the preferences
  • Restart the application
  • Reset all preferences

I keep getting “Invalid license key” when I try to enter my purchased license details

We've changed and simplified our license mechanism with Kyno 1.5.5, but the transition can be a little confusing. If you've purchased your license after 2018-11-07 you should have received something called a "serial number" - a short code of the form KYNO-XXXX-XXXX-XXXX-XXXX-XXXX.
To activate your license with a serial number you need to download the latest version of Kyno, enter the email address you purchased with along with your serial number.

If you've purchased before 2018-11-07 you should've received a longer code called a "license key". In Kyno versions 1.5.5 or later you need to click "I have a legacy license key" in order to enter that longer key along with your name. Make sure to spell the name exactly as indicated in your license email.

  • Software product of the year 2019.
  • “Kyno is the most full-featured media management system I’ve ever seen.”
    Larry Jordan
  • “Kyno is one of the best media management tools available for individuals, small and large teams alike.”
  • “Kyno is quite possibly the single most useful piece of supplemental software for video post-production and media creation that I’ve ever used.”
    ProVideo Coalition
  • “A really good piece of software that I recommend.”
    Philip Bloom
  • “Kyno organizes all of your footage in an intuitive fashion.”
    No Film School
  • “A Swiss army knife of video handling.”
    RedShark News