spdl.io.streaming_load_video_nvdec¶

streaming_load_video_nvdec(src: str | Path | bytes | object, device_config: CUDAConfig, *, num_frames: int, post_processing_params: dict[str, int] | None = None) → Iterator[list[CUDABuffer]][source]¶

Load video from source chunk by chunk using NVDEC.

See also

streaming_nvdec_decoding: Demonstrates how to decode a long video using NVDEC.

Parameters:

src – The source URI. Passed to Demuxer.
device_config – The CUDA device config. See NvDecDecoder for details.
num_frames – The maximum number of frames yielded at a time.
post_processing_params – The post processing parameters passed to NvDecDecoder.init.

Yields:

List of at most num_frames CUDA buffers. Each CUDA buffer contain a frame in NV12 format. The shape is (height + height // 2, width). The bottom one-third contains interleaved UV plane, and the top part contains the Y plane.

Use nv12_to_rgb() or nv12_to_bgr() to convert to RGB frames.