When converting gif to webp, there is no relevant parameter to specify the dispose method

[alenzzzzz]

Take this gif picture as an example. After converting it to webp through the example, when the picture frame is switched, the dispose method of the original picture is not used.

[alenzzzzz]

The old version has this part of the function support

[alenzzzzz]

@sizeofint @Benau

guys，Would you please help me？