This week I edited the video:
- First process the video through AE, roto brush to select the object to be removed. The purple part is boxed successfully. The excess is removed by holding down the ctrl key.

- Then click on the inverse selection so that you select the rest except the arm, then freeze the video and it will show the video with the arm already removed in a transparent layer.

- When the arm is selected the roto brush will automatically track the other frames, When the arm is selected the roto brush will automatically track the other frames.
- After choosing to use the roto good arm here I froze the video.

- This is the effect after removing the hands, the black areas are transparent.

- Using the png image sequence export keeps the arm part transparent so I can see the video reference in Maya.
