Whisper Stops Transcription after first few minutes

[meera]

I have a long (approximately 1 hour 20 minutes long) audio recording. I am using Whisper on Google Collab to transcribe.
I see whispers start transcribing then stop transcription after 7-8 minutes. There is no pause in the speech. There are only two speakers in the audio.

I tested other audio files and haven't faced any issues. What could be the reason why the whisper is not completing the task?

-Meera