Avatar's can't be random on the video endpoint since these will be called in batch

app/controllers/abc/speaking.py

@@ -15,7 +15,7 @@ class ISpeakingController(ABC):
         pass
 
     @abstractmethod
-    async def generate_video(self, text: str, avatar: Optional[str]):
+    async def generate_video(self, text: str, avatar: str):
         pass
 
     @abstractmethod

app/controllers/impl/speaking.py

@@ -19,7 +19,7 @@ class SpeakingController(ISpeakingController):
     async def get_avatars(self):
         return await self._vid_gen.get_avatars()
 
-    async def generate_video(self, text: str, avatar: Optional[str]):
+    async def generate_video(self, text: str, avatar: str):
         return await self._vid_gen.create_video(text, avatar)
 
     async def pool_video(self, vid_id: str):