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)[source]#
class data_juicer.ops.mapper.video_resize_aspect_ratio_mapper.VideoResizeAspectRatioMapper(min_ratio: str = '9/21', max_ratio: str = '21/9', strategy: str = 'increase', *args, **kwargs)[source]#

Bases: 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', *args, **kwargs)[source]#

Initialization method.

Parameters:

  • 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’].

  • args – extra args

  • kwargs – extra args

process_single(sample)[source]#

For sample level, sample –> sample

Parameters:

sample – sample to process

Returns:

processed sample