Fix Chrome is Waiting for cache in Windows

What Is Error 126?

Error 126 is a very commonly occurring error that is often the result of damaged system files of Windows. They usually occur during the installation of some Windows program or application. When Error 126 is generated, it terminates the installation process almost instantly. It is important to take corrective measures immediately to ensure that no such problems are encountered again in the future.

Solution

Error Causes

There are a variety of conditions that may trigger Error 126. These conditions are listed below as follows.

• Corruption of the service-related DLL file
• Missing or damage service-related DLL file
• Corrupt, damaged, or Misconfigured system files
• Improper hardware or application installations or uninstallations
• Existence of viruses, malware, adware, or spyware in the system
• Corrupt or incorrect registry entries in the system files

When any of the above-listed conditions occur, the corrupt system files will go to the improper links or missing information. Eventually, the problems with the files will keep the applications or programs from responding in the usual manner. Whatever are the reasons for error generation, it is of utmost importance that the error is removed to ensure smooth functioning of the system.

Further Information and Manual Repair

There are many different ways this error can be rectified. However, the two most effective solutions are listed below as follows.

• This solution is for the advanced user. Turn on the system and log on to it as the Administrator. Now click on the Start button. Now click on All programs -> Accessories -> System Tools. Here you will come across the option for System Restore. Click on it. A new window will appear. Select 'restore my computer to an earlier time' point. Now clock on Next. A list of restore points will now appear in front of you. Choose the latest restore point you come across from this list and click on ‘Next’. In the next window that opens, click on ‘Next’ again. This is the confirmation window. Once the restoration finishes, restart your computer.
• This solution is for novice users. Download an Error 126 repair utility program. Install it on your system. Now use it to scan your system for errors. Find out if there is an option to fix/repair error. When you come across it, click on it as soon as the scan is complete. Restart your computer. Your system is now free of Error 126.

Code 39 - What is it?

Code 39 is a device driver error code that pops up when the Windows operating system cannot load the driver for the hardware you want to use.

This hampers your ability to use the hardware properly. The error code is almost always presented in the following format:

“Windows cannot load the device driver for this hardware. The driver may be corrupted or missing.” Code 39

Error Causes

A device driver is a software program that tells the operating system how to control a particular hardware device. Each hardware device has a different driver.

There are separate device drivers for printers, CD-ROM readers, and keyboards, to name a few.

Many device drivers are already built into the operating system. But sometimes you will need to install a new device driver when you want to use a new piece of hardware device that the operating system is not familiar with, or does not anticipate.

Regardless of whether or not the drivers are already integrated into the operating system, you may still experience code 39, typically because of the corrupted or outdated drivers.

Outdated and corrupted drivers cause hardware malfunction and failure, which trigger device driver error codes like code 39. Other causes include incorrect registry values.

Further Information and Manual Repair

Below are some of the easiest and most effective methods to resolve Device Manager error code 39 on your PC.

To follow and implement these methods, you don’t require any technical knowledge or expertise. Simply follow these instructions to fix the error right away.

Method 1 - Fix with a Simple Reboot

There is a possibility that the error code 39 is caused by some fluke within the Device Manager or your BIOS.

If that’s the reason, then a simple PC reboot can resolve the issue immediately. Therefore, before you try anything, it is advisable to restart your system.

If it works, then that is great, but if it doesn’t, then don’t worry, try other methods given below to fix this problem successfully.

Method 2 - Uninstall and Reinstall Drivers

If the error code 39 is generated due to faulty or outdated drivers, then simply uninstall and remove them and then reinstall new driver versions. There are two ways to remove faulty drivers.

Method One

• One is, to go to the start menu, click on Control Panel, and then Add/Remove Programs.
• Remove the program and the driver you think is causing problems. This will thoroughly remove all traces of the faulty driver.
• To reinstall, follow the same steps but this time install the new device driver version.

Method Two

• The other way is to go to the start menu, type Device Manager in the search bar, and then press enter to continue.
• In the Device Manager, find and locate the problematic device.
• After that, double-click the category of device that you wish to uninstall. Let’s say, Windows is unable to load the graphics card driver.
• This means you will have to click on the Display Adapter category in the Device Manager to uninstall the graphics card.
• After you have successfully uninstalled, Windows will prompt you to confirm device removal.
• Simply click OK to confirm and proceed. To activate the changes, restart your PC.
• To reinstall, go to the Device Manager, click on the Action tab and then select the option ‘Scan for Hardware Changes.’

This method, although effective in resolving error code 39,  can be time-consuming. To avoid the hassle and save time, try method 3.

Method 3 - Update Drivers Automatically with DRIVERFIX

If you would like to read more helpful articles and tips about various software and hardware visit errortools.com daily.

What is Runtime Error 216?

Runtime Error 216 is not a common error message like Runtime Error 339. However, it may sometimes occur when starting up the computer if you are using a Windows-based application or using Internet Explorer.

Solution

Download Available to Completely Repair Runtime Error 216

Error Causes

The runtime error 216 error occurs when your computer gets infected with one or more viruses. The most common virus, in this case, is the SubSeven Trojan virus. Once your computer gets infected with a virus(es) it creates a backdoor on your Windows system. This might give hackers access to monitor your PC remotely. This poses a great risk to confidential information and personal data stored on your PC. The hackers can easily monitor your PC, access your private information and misuse it.

Further Information and Manual Repair

If you experience this error message, it is advisable to repair it immediately without any delays; Runtime Error 216 can make your system vulnerable. Here’s what you must do:

• First things first, disconnect the internet connection so that the hacker can’t access your PC.
• Now perform a boot scan through a powerful antivirus.  The antivirus will scan your system for viruses. After the scan is complete, all the disinfected files will appear in the scan report results. You are advised to delete them and click repair to fix the error.
• Remember the antivirus will not scan infected Windows Registry entries, therefore to remove SubSeven.exe Windows Registry entries go to the start menu and type REGEDIT in the search box.
• Click on REGEDIT and select Run as Administrator. Now type the following registry path HKEY_LOCAL_MACHINESoftware. This will help locate SubSeven.exe infected files. Once located, delete all of them and close Windows Registry Editor.

To ensure your computer is completely free from SubSeven Trojan Virus and other possible viruses, it is advisable to remove all the recently installed programs and downloaded applications. This is recommended because sometimes while downloading programs, we tend to download corrupted programs which include viruses. It’s, therefore, best to delete all the programs you’ve installed recently. Secondly, to prevent virus and hacker attacks, you must frequently update your security program by installing a powerful antivirus program. Following the repair guide steps will protect your system from malware. It will also help fix runtime error 216 and ensure your PC is protected from similar threats.

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If you are trying to install a Feature Update in Windows 10 but you got the error code 0x80190001, then it means that there is something wrong with the installation files. The installation files are either corrupted or some of them failed to be downloaded. On the other hand, the issue might also have something to do with a driver issue. When you encounter error 0x80190001, you will see the either of following error message on your screen:

“Something went wrong Couldn’t download Windows 10, please check your network settings and try again. You can contact Microsoft support for help with this error. Here’s the error code 0x80190001”. Or: “An unexpected error was encountered while attempting to download files required for the upgrade”.

Here are some fixes that could help you resolve the error 0x80190001. Follow them carefully.

Option 1 – Run the Network Troubleshooter

As mentioned in the error message the issue might have something to do with the network settings of your computer so you can try to run the Network Troubleshooter and then try updating or installing Windows 10 again.

Option 2 – Update Network drivers

• Tap the Win + R keys to launch Run.
• Type in msc into the box and tap Enter or click OK to open the Device Manager.
• After that, look for Network Adapters from the list of device drivers displayed. Once you find it, expand it to see the Network drivers.
• Right-click on it and select the option “Uninstall device” – do the same thing for the other Network drivers.
• Restart your PC so Windows can detect and reinstall the drivers you just uninstalled.

Option 3 – Use Storage Sense to clean up temporary and junk files

• Open Setting > System > Storage from the WinX Menu.
• From there, you will see a list of all the local and connected storage devices along with the details on the free space.
• Now make sure that the Storage Sense feature is turned On then go find a link that says “Free Up Space” and click it to open.
• After that, a screen which is the built-in program in Windows 10 will appear and will scan your computer for the following junk files so you can free up disk space:
• Windows Upgrade Log Files
• The system created Windows Error Reporting Files
• Thumbnails
• Temporary Internet Files
• Previous Windows Installation Files
• Delivery Optimisation Files
• DirectX Shader Cache

Note: Once you’re done freeing up space on your drive, try to run the setup file again.

Option 4 – Delete the contents in the SoftwareDistribution folder

The Software Distribution folder in the Windows operating system is a folder that can be found in the Windows directory and is used to store files temporarily which might be required to install the Windows Update on your PC. Thus, it is required by the Windows Update and maintained by WUAgent. A lot of users tried deleting the files in this folder to fix the problem and so far it has worked. Like them, you can try clearing the Windows Update cache by simply deleting the contents of the folder named “SoftwareDistribution” since Windows apparently can’t clear and re-download the update contents once they are corrupted. Thus, deleting the contents of this folder will make Windows download the contents again which will fix the problem. To do that, follow the steps below.

• Open the WinX Menu.
• From there, open Command Prompt as admin.
• Then type in the following command – don’t forget to hit Enter right after typing each one of them.

net stop wuauserv net stop bits

• After entering these commands, it will stop the Windows Update Service and the Background Intelligent Transfer Service.
• Next, go to the C:/Windows/SoftwareDistribution folder and get rid of all the folders and files thereby tapping the Ctrl + A keys to select them all and then click on Delete. Note that if the files are in use, you won’t be able to delete them.
• Once all the contents in the Software Distribution folder are deleted, restart your PC and then go back to Command Prompt and input the following commands again.

net start wuauserv net start bits

 Since the folder has already been flushed, it will be populated afresh the instant your restart your computer and open Windows Update.

Option 5 – Run the Windows Update Troubleshooter

You might also want to run the Windows Update Troubleshooter as it is also known to help users resolve Windows Update errors like error 0x80190001.

Option 6 – Try to disable your antivirus program

Disabling the antivirus program or any security software installed in your computer is always a good idea you can try when the Windows Update process does not go smoothly. So before you try updating your computer again, make sure to disable the antivirus or security program and once the Windows Update is done, don’t forget to enable the antivirus program back again.

Option 7 – Try to use the Media Creation tool

The Media Creation tool in Windows allows you to use the ISO installation file to make a bootable device that you can use to install Windows on your PC. Note that this is kind of different from the usual installation process as it could erase your computer’s current settings and data on the primary drive. Thus, before you proceed, you need to backup all your data into some removable drive and then use the Media Creation Tool to make a bootable drive.

• After making the bootable drive, you need to plug it into your computer and then reboot.
• Next, tap the F10 or Esc key to open the boot options.
• Now set the boot priority of the removable drive the highest. Once the setup comes forth, follow the next onscreen instructions and install Windows without any problems.

Error Code C1900107 – What is it?

Error code C1900107 is associated with an issue with upgrading to Windows 10. If you are trying to upgrade your Windows 7, Windows 8, or Windows 8.1 to Windows 10, you might have trouble doing it and you might come across this error C1900107. The error prevents you from upgrading to Windows 10 no matter what you do. Common symptoms of this error:

• The update process continues for a long time and never ends.
• The update process ends suddenly and a message says “Failed: 1 update. Errors found: Code C1900107. Windows Update encountered an unknown error.”
• The update process fails after trying multiple times.

Solution

Error Causes

Following reasons may be responsible for this error:

• There is not enough space for Windows 10 files in the primary drive
• There is not enough space in System Reserved Partition
• Windows 10 files are faulty or corrupt

More Information and Manual Repair

Method 1:

Clean boot Windows 8 and Windows 8.1: Whenever you get some unexpected behavior on your Windows 8, the first thing you should do is try to resolve the issue by taking a diagnostic approach. Plenty of factors can be the cause for issues like slowdowns, BSODs, computer freezes, sudden reboots, etc. The best way to detect the problem is to perform a clean boot. Using a clean boot, you can find out if the Operating System is damaged by some third-party app or bad driver. You can exclude the influence of these factors and prevent them from loading. You should do 2 things before you proceed with the clean boot. First, check if any third-party application is causing the problem. If you disable all third-party apps from startup, it will help eliminate software conflicts.

• Press the Windows + R on the keyboard. The Run dialog box will pop up.
• Type MSConfig in the dialog box and click "OK".
• The System Configuration utility will appear on the screen.
• On the services tab of the System Configuration dialog box, tap or click to select the Hide all Microsoft services check box, and then tap or click Disable all.
• On the startup tab of the System Configuration dialog box, tap or click Open Task Manager.
• On the startup tab in Task Manager, for each startup item, select the item and then click Disable.
• On the startup tab of the System Configuration dialog box, tap or click OK, and then restart the computer.

Now, close MSConfig.

Method 2:

The second step is a Safe boot. Follow the steps below for a safe boot:

• Press Win + R shortcut keys on your keyboard. The Run dialog will appear on the screen. Type MSConfig and press Enter.
• The 'System Configuration' application will appear on the screen.
• Switch to the 'Boot' tab, select your Windows 8.1 entry and tick the 'Safe mode' checkbox.
• Reboot your PC to enter the Safe mode of Windows 8.1.
• After you finish troubleshooting in Safe Mode, run MSConfig again from Safe Mode and uncheck the checkbox from step 2.

Method 3:

For this method, you will need to find the $Windows.~BT Folder in your primary drive which is C:. This folder might contain corrupt files which are preventing you from installing Windows 10. The folder is hidden and we need to unhide it. Follow the steps below:

1. Open File Explorer or alternatively double click on This PC or My Computer.
2. Now from the top option click on View, The Check the Box that says Hidden items.
3. Now you will be able to see hidden files and folders. Navigate to C:$Windows.~BT and Rename the folder to something like $Windows.~BT1.
4. Now, try downloading Windows 10 again. The installation process should go through this time without any errors like code C1900107.

Method 4: If the above methods fail, try this method:

1. Go to C:\Windows\Software Distribution\Download. Now delete all the files from this download folder. Remember, do not delete the folder itself, and just delete the files.
2. Now, delete the $Windows.~BT Folder. This might ask you for administrator permission. Simply click yes.
3. Now try to install or upgrade to Windows 10. This method should work fine and there should be no error code C1900107.

If you do not possess the technical expertise required to accomplish this yourself or do not feel comfortable doing so, download and install a powerful automated tool to get the job done.

Error Code “Windows 10 isn’t activated after upgrading for free” – What is it?

Windows 10 isn’t activated error occurs when Windows users attempt to upgrade to Windows 10 for free and end up in a non-activated state. It is a Windows 10 activation error affecting PC owners who attempt to upgrade their Windows 7 or Windows 8.1 operating systems. A message box will appear with the following message: “Windows 10 isn’t activated after upgrading for free from Windows 7 SPI or Windows 8.1 update.”

Common symptoms of this error code include the following:

• Inability to upgrade for free to Windows 10
• The appearance of activation error code in the message box

Solution

Error Causes

To understand the cause of this activation error, users will need to understand activation within Windows. Activation is a process that allows Windows to verify that you are upgrading your operating system based on the Microsoft Software Licensing Terms. These terms specify, for instance, the number of devices upon which you can use Windows.

Once you have a genuine copy of Windows and you are following the terms mentioned earlier, you should be able to activate and complete the upgrade to Windows 10. However, the activation fails when these conditions are not met. Note also that the error may occur if users fail to upgrade to Windows 10 before reinstalling, requiring them to repeat the installation process by first going back to the previous version of Windows present on their system. Once the upgrade process is not done as should, you might encounter other Windows 10 errors such as error code 0xc0000142

If you see this error code, “Windows 10 isn’t activated after upgrading for free” proceed to rectify it using manual repair methods below.

Further Information and Manual Repair

To fix this activation error code in Windows 10, users will need to employ at least one manual repair procedure. This process can successfully be completed by non-technical Windows users. However, you may also consider getting assistance from a Windows repair technician if you are not certain you have the requisite skills needed to complete the manual repair tasks below.

The main methods to resolve the error code “Windows 10 isn’t activated after upgrading for free from Windows 7 SPI or Windows 8.1 update” is as follows:

Method One: Manually Activate Windows

If you attempted upgrading for free to Windows 10 and ended up with the activation error you will need to first perform a manual activation. Follow the steps below to complete the process.

• Step one: Tap or click the Start button
• Step two: Select Settings then Update & security
• Step three: Select Activation
• Step four: Once activation status is Connect to the Internet to activate Windows, click or tap Activate

The steps above enable users to successfully activate Windows 10 if the issue involves a connection problem. However, if Windows is not activated, it may mean your copy of Windows is not genuine. This may require you purchase a copy of Windows to rectify the issue. However, if you have a genuine copy of Windows proceed by applying the steps found in method two.

Method Two: Use Product Key to Verify Copy of Windows

A valid product key is one way you can verify your copy of Windows is genuine. This will enable you to complete activation and allow you to access the free upgrade to Windows 10. Follow the steps below.

• Step one: Click or tap the Start button
• Step two: Select Settings then Update & security
• Step three: Click Activation
• Step four: Select Change Product Key then type in the product key. (Ensure you type the 25 characters in the correct order.)

Method Three: Use an Automated Tool

Error codes in Windows often occur due to poor maintenance of one’s PC. To improve your system and reduce your machine’s risk of experiencing error codes, download a powerful automated tool. This tool is both powerful and user-friendly, making its benefits accessible to even the most non-technical Windows users.

Error 2738 - What is it?

The error code 2738 typically occurs either when you attempt to install a program or uninstall it on Windows Vista and 7. The error message is displayed in the following format:

“Error 2738. Could not access VBScript run time for custom action.”

It is a type of runtime error associated with VB (Visual Basic) Script. It indicates that the VB script engine is not correctly registered on your computer.

Solution

Error Causes

The error 2738 may occur due to multiple reasons. These include:

• Windows VB Script engine is not properly installed or is disabled on your PC
• Registry keys are incorrect
• Corrupt registry entries
• Poor PC maintenance

As this error code may be generated due to registry issues, it is advisable to fix it immediately as it may pose serious threats to your system like system failure, crash and valuable data loss. And complete data retrieval is often the hardest task.

Further Information and Manual Repair

To avoid such threats and to resolve the error 2738 on your PC immediately, here are some solutions that you can try:

Register the VB Script Engine Correctly on Your PC

This can be done by running the command prompt as administrator:-

• Simply go to the start menu, click all programs, and select accessories.
• Right-click on Command Prompt and select ‘run as Administrator’.
• Navigate to the folder that contains the DLL. If you are using Windows 32 bit version, then type cd %windir%system32 into the Command Prompt and then press enter.

Nonetheless, if you are using 64-bit version Windows then type the following command: regsvr32 vbscript.dll and then press enter. This will help you register the VB script engine correctly and resolve the issue.

Download and Run Restoro

If the error still persists, then this means the underlying cause of the error 2738 could be invalid and corrupt registry keys. To resolve either of the causes in seconds, it is advisable to install and run Restoro. Restoro is an advanced, innovative, and multi-functional PC Fixer. This tool is embedded with multiple utilities including a powerful registry cleaner, an antivirus and a system optimizer.  The registry cleaner is a powerful utility that instantly detects all registry issues and resolves them right away. The registry saves all activities performed on the PC. It stores all types of files including invalid registry keys, cookies, internet history, junk files and temporary files. If these unnecessary files are not removed and cleared from the PC, it not only takes a lot of disk space but also damages the registry and dll files. The registry cleaning utility detects all such files and removes them. It wipes out all invalid registry entries and bad keys clean the registry and restores it. In addition to this, this tool can also be used to remove viruses and optimize the system speed. It is a user-friendly and highly functional PC repair tool. It is compatible with all Windows versions Click here to download Restoro on your PC and resolve error 2738 right away!

As you know, the Graphics Card in a computer is one of the important components in an operating system as they are responsible for rendering various objects in your computer. However, there are cases when the performance of this rendering can degrade and your computer can trigger a VIDEO_SCHEDULER_INTERNAL_ERROR Blue Screen of Death error instead. The VIDEO_SCHEDULER_INTERNAL_ERROR bug check has a value of 0x00000119 which means that the video scheduler has detected a fatal violation in your computer. Before you troubleshoot the problem, you might want to perform System Restore first as it might help you fix the Stop error. To perform System Restore, refer to these steps:

• First, press the Win + R keys to open the Run dialog box.
• After that, type in “sysdm.cpl” in the field and tap Enter.
• Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
• After that, follow the on-screen instructions to finish the process and then restart your computer and check if the Stop error is fixed or not.

If the VIDEO_SCHEDULER_INTERNAL_ERROR BSOD error is still not fixed after System Restore, then follow the given options below to further troubleshoot the problem.

Option 1 – Try to manually check the Graphics Card hardware

You might also want to check the physical status of your Graphics card and you can do this by disconnecting the Graphics card or any other external device connected to your computer. Once you’ve removed the external device, check it for any damages. If there’s none, connect it back to your computer and check if the VIDEO_SCHEDULER_INTERNAL_ERROR Blue Screen error is fixed or not.

Option 2 – Try removing hardware or drivers that you’ve installed recently

If you have recently installed some hardware or drivers, you might want to disable or remove them since external devices are proven to be one of the factors that trigger Blue Screen errors like VIDEO_SCHEDULER_INTERNAL_ERROR. All you have to do is physically disconnect any external devices that are connected to your computer and then check if it fixes the BSOD error or not.

Option 3 – Try to rollback, update, or disable the Graphics card drivers

Since the VIDEO_SCHEDULER_INTERNAL_ERROR Blue Screen error has something to do with Graphics card drivers, you can either roll back, update or disable them depending on your preference in order to resolve the error.

• First, boot your computer into Safe Mode.
• After that, tap the Win + R keys to launch Run.
• Type in devmgmt.msc into the box and tap Enter or click OK to open the Device Manager.
• After that, a list of device drivers will be displayed. From there, look for the Display Adapters and click on them.
• After that, right-click on each entry under the Display Adapters and select the “Uninstall Device” option from the menu.
• Now restart your computer.
• After restarting your computer, go to the Settings app and Check for Updates in the Windows Update section.

Note: You also have the option to go directly to the website of your graphics card manufacturers like NVIDIA, Intel, or AMD and go to the section called Drivers then check if there’s a new available update – if there is, download and install it.

Option 4 – Uninstall any faulty drivers

You can also uninstall any faulty drivers via Device Manager. How? Refer to these steps:

• Tap the Win + R keys to launch the Run dialog box.
• Then type “devmgmt.msc” in the field and tap Enter to open the Device Manager.
• From there, look for any faulty drivers. You can identify them easily as they will be marked with a yellow exclamation point. And then check which entries would not affect the normal functioning of your PC.
• Now click on the entries of every faulty driver and click on the Uninstall option.
• Once you’ve uninstalled them, restart your computer to allow your computer to reinstall the faulty drivers you’ve just removed.

Option 5 – Run System File Checker at boot time

• Once you get to the Welcome Screen part, click on Next.
• Afterward, click on the Repair your computer option located on the bottom-left part of the window.
• Then click on Troubleshoot.
• Next, select the Advanced Options and then Command Prompt.
• After opening Command Prompt, type the “sfc /scannow” command and hit Enter to run the System File Checker scan.
• Wait until the process is completed and type “exit” to close Command Prompt and then restart your computer to successfully apply the changes made.

Option 6 – Try to run the Blue Screen Troubleshooter

As you know, the Blue Screen troubleshooter is a built-in tool in Windows 10 that helps users in fixing BSOD errors like the VIDEO_SCHEDULER_INTERNAL_ERROR error. It can be found in the Settings Troubleshooters page. To use it, refer to these steps:

• Tap the Win + I keys to open the Settings panel.
• Then go to Update & Security > Troubleshoot.
• From there, look for the option called “Blue Screen” on your right-hand side and then click the “Run the troubleshooter” button to run the Blue Screen Troubleshooter and then follow the next on-screen options. Note that you might have to boot your PC into Safe Mode.

High Efficiency Image File Format (HEIF) is a container format for individual images and image sequences. The standard covers multimedia files that can also include other media streams, such as timed text, audio, and video. A HEIF image using High-Efficiency Video Coding, HEVC, requires only about half the storage space as the equivalent quality JPEG. HEIF also supports animation and is capable of storing more information than an animated GIF or APNG at a small fraction of the size. HEIF files are a special case of the ISO Base Media File Format (ISOBMFF, ISO/IEC 14496-12), first defined in 2001 as a shared part of MP4 and JPEG 2000. Introduced in 2015, it was developed by the Moving Picture Experts Group (MPEG) and is defined as Part 12 within the MPEG-H media suite (ISO/IEC 23008-12). HEIF was adopted by Apple in 2017 with the introduction of iOS 11, and support on other platforms is growing.

HEIF files can store the following types of data:

Image items

Storage of individual images, image properties, and thumbnails.

Image derivations

Derived images enable non-destructive image editing and are created on the fly by the rendering software using editing instructions stored separately in the HEIF file. These instructions (rectangular cropping, rotation by one, two or three quarter-turns, timed graphic overlays, etc.) and images are stored separately in the HEIF file, and describe specific transformations to be applied to the input images. The storage overhead of derived images is small.

Image sequences

Storage of multiple time-related and/or temporally predicted images (like a burst-photo shot or cinemagraph animation), their properties, and thumbnails. Different prediction options can be used in order to exploit the temporal and spatial similarities between the images. Hence, file sizes can be drastically reduced when many images are stored in the same HEIF file.

Auxiliary image items

Storage of image data, such as an alpha plane or a depth map, which complements another image item. These data are not displayed as such but used in various forms to complement another image item.

Image metadata

Storage of EXIF, XMP and similar metadata which accompany the images stored in the HEIF file.