A video source can offer several versions that look similar in a menu but differ in resolution, frame rate, codec, sound and size. Flux inspects supported metadata and presents media choices before the desktop download starts. The best choice is the one that fits your playback device and storage, not simply the highest number shown.
Resolution and frame rate are separate choices
1080p or 4K describes frame dimensions, while fps describes how many frames are shown each second. A source may publish a 1080p version at one frame rate and a higher-resolution version at another. Only options exposed by the accessible source can be offered; selecting a larger output does not create detail that the source lacks.
A container is not the video codec
MP4 and MKV are containers for streams. A container label alone does not tell you the compression codec, audio availability or compatibility with a particular television. Review the detected format details and choose an output suitable for the device where you will watch it. Flux can mux selected video and audio instead of confusing an audio-only source with a full video.
Review the approval window
- Choose the video title and intended resolution.
- Confirm that audio is included or select the correct audio track.
- Pick MP4 or MKV for video output, rather than an audio-only format.
- Review subtitles or chapters where supported.
- Check the filename, destination and available disk space before starting.
Why a requested quality may be unavailable
The provider may restrict a format, require a valid session or expose only adaptive streams to the current page. Expiring links can also change between inspection and transfer. An access or source error should be handled as such; it does not justify saving a random sound file under the video name. DRM and login challenges are not bypassed.
Sources and release context
This guide describes the Flux 2.6.6 documentation. Check the current release record for package conditions.
