Not able to render in mp4 format

Software Natron
1

Not able to render in mp4 format in my Windows 10 Pc . Natron Version 2.4.3 i’m getting the following error :
Error while creating node fr.inria.built-in.Write : No plugin capable of encoding mp4 was found. Can some one help me.

2

can you export an image sequence and create the mp4 somewhere else?