transformers

e7e8b7fa - [Video] Fix convert_to_rgb channel slicing and alpha blending for RGBA videos (#48053)

[Video] Fix convert_to_rgb channel slicing and alpha blending for RGBA videos (#48053) * [Video] Fix convert_to_rgb channel slicing and alpha blending for RGBA videos * Address review feedback: simplify condition, use ChannelDimension enum, add alpha=0 and torch value tests