cutcutcodec.core.analysis.video.properties.rate

Find the average frame rate of a video stream.

This information is collected in the metadata of the file. Its access is fast but its value is not always accurate. Especially since the framerate is not always constant within the same stream.

Functions

get_rate_video(filename[, index, backend])

Read in the metadata, the average frequency of the frames.

Details

cutcutcodec.core.analysis.video.properties.rate.get_rate_video(filename: Path | str | bytes, index: int = 0, *, backend: str | None = None) → Fraction[source]

Read in the metadata, the average frequency of the frames.

Parameters

filenamepathlike

The pathlike of the file containing a video stream.

indexint

The relative index of the video stream being considered, by default the first stream encountered is selected.

backendstr, optional

None (default) : Try to read the stream by trying differents backends.
‘ffmpeg’Uses the modules pip install ffmpeg-python
which are using the ffmpeg program in the background.
‘cv2’ : Uses the module pip install opencv-contrib-python-headless.

Returns

fpsFraction: The average frequency of the frames in Hz.

Raises

MissingStreamError: If the file does not contain a playable video stream.
MissingInformation: If the information is unavailable.

Examples

>>> from cutcutcodec.core.analysis.video.properties.rate import get_rate_video
>>> from cutcutcodec.utils import get_project_root
>>> video = get_project_root() / "media" / "video" / "intro.webm"
>>> get_rate_video(video)
Fraction(30000, 1001)
>>>