Hi Srinu Tamada,
I'm glad to hear that your issue has been resolved. And thanks for sharing the information, which might be beneficial to other community members reading this thread as solution. Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others ", so I'll reiterate the previous response to an answer in case you'd like to accept the answer. This will help other users who may have a similar query find the solution more easily.
Ask: Computer vision service failed to ingest video file
Solution: The issue got resolve by generating SAS url for blob videos at run time instead of storing them temporary. In our case, SAS url was expired. That reason why it was working and then failed.
If you have any further questions or concerns, please don't hesitate to ask. We're always here to help.
Thank you!