data_juicer.ops.mapper.video_resize_aspect_ratio_mapper module

data_juicer.ops.mapper.video_resize_aspect_ratio_mapper.rescale(width, height, ori_ratio, min_ratio, max_ratio, strategy)

class data_juicer.ops.mapper.video_resize_aspect_ratio_mapper.VideoResizeAspectRatioMapper(min_ratio: str = '9/21', max_ratio: str = '21/9', strategy: str = 'increase', save_dir: str = None, *args, **kwargs)

基类：Mapper

Mapper to resize videos by aspect ratio. AspectRatio = W / H.

STRATEGY = ['decrease', 'increase']

__init__(min_ratio: str = '9/21', max_ratio: str = '21/9', strategy: str = 'increase', save_dir: str = None, *args, **kwargs)

Initialization method.

参数:

• min_ratio -- The minimum aspect ratio to enforce videos with an aspect ratio below min_ratio will be resized to match this minimum ratio. The ratio should be provided as a string in the format "9:21" or "9/21".

• max_ratio -- The maximum aspect ratio to enforce videos with an aspect ratio above max_ratio will be resized to match this maximum ratio. The ratio should be provided as a string in the format "21:9" or "21/9".

• strategy -- The resizing strategy to apply when adjusting the video dimensions. It can be either 'decrease' to reduce the dimension or 'increase' to enlarge it. Accepted values are ['decrease', 'increase'].

• save_dir -- The directory where generated video files will be stored. If not specified, outputs will be saved in the same directory as their corresponding input files. This path can alternatively be defined by setting the DJ_PRODUCED_DATA_DIR environment variable.

• args -- extra args

• kwargs -- extra args

process_single(sample)

For sample level, sample --> sample

参数:

sample -- sample to process

返回:

processed sample