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cache_frames

vtome::video_source

Function cache_frames 

Source 
pub fn cache_frames(
    path: impl AsRef<Path>,
    ranges: &[(u64, u64)],
) -> Result<Vec<Frame>>
Expand description

Decodes ranges of the film at path into the frames a FrameCache for those ranges wants — what Controls::add_cached takes.

Each range costs a seek to the keyframe before it and decoding forward; files import writes have a keyframe every two seconds, so that is short.

§Errors

Whatever opening or decoding the file refuses, Error::Unsupported for a file with no frame rate, and Error::Decode for a range that runs past the end of the film.