Open the file properties. A 4K video, even compressed, is rarely small:
If fg-optional-4K-videos-3.bin is only a few megabytes, it’s likely a file header or index chunk, not the video itself. If it’s several hundred megabytes to gigabytes, it contains substantial data. fg-optional-4K-videos-3.bin
The simplest solution: delete it. If you need the resource, restart the download from the original source. Do not try to repair the partial .bin manually—it lacks the central directory or finalization metadata. Open the file properties
These .bin files are not standard disc images (like CD/DVD .bin). Instead, they are: If fg-optional-4K-videos-3
To inspect the contents (without executing anything):
# Linux/macOS: Check file type
file fg-optional-4K-videos-3.bin