# Troubleshooting ## Failed to start on Windows

If you see the following message or similar mentioning `VCRUNTIME140.dll`, install [**VC redist**](https://aka.ms/vs/17/release/vc_redist.x64.exe) ## Failed to export HEVC If you see an error message like this:

...then: * If you're on Windows or Linux, make sure you're using the latest drivers for your GPU. * If you're using an older GPU, it may not support hardware HEVC encoding, in which case, you should try H.264 instead. * If H.264 also fails, try disable GPU encoding completely. ## Application failed to start If you see an error message like this on Windows:

Please try downloading Gyroflow again. Everything you need is in the ZIP file that you download - you don't need to install any other dependancies manually. ## No space left on device If you see an error message like this:

It means your hard drive doesn't have enough space for `ffmpeg` to render to. Please make some room and try again. ## Doesn't support this pixel format If you see an popup like this:

It means your physical GPU hardware doesn't support the pixel format you're attempting to render to (i.e. normally it means your GPU hardware doesn't support 4:2:2 10-bit). You can click **Render using CPU**, to render using the CPU instead of the GPU to maintain full quality, or you can pick another pixel format. ## Unknown Error Occurred If you see an error message like this:

...then: * If you're on Windows or Linux, make sure you're using the latest drivers for your GPU. * If you're using an older GPU, it may not support hardware HEVC encoding, in which case, you should try H.264 instead. * If H.264 also fails, try disable GPU encoding completely. ## Read Only File System If you see an error message like this:

...and you're on Mac, make sure you install **Gyroflow** in your **Applications** folder and do NOT run it from the downloaded DMG package. Due to macOS sandboxing, Gyroflow isn't allowed to write to inside the package. ## Invalid data found when processing input If you see an error message like this:

...and you're working with RED `R3D` files, try deleting the `MOV` file that Gyroflow created next to the `R3D` file, and try again. ##