MP4 Reader randomly crashes with "No Videotrack found" error when root folder given to reader has no file initially

[mraduldubey]

Describe the bug
MP4 Reader randomly crashes with "No Videotrack found" error when root folder given to reader has no file initially.
This happens because the reader starts reading the file file before the writer has not finished syncing.

To Reproduce
Steps to reproduce the behavior:

1. Run the mp4_reader_tests/mp4reader_waits_when_no_video_and_reads_whenever_video_is_written at high fps
2. Error should happen once in a while

Expected behavior
Implement the fix using live features/retryInitInterval & retry when video track error occurs.
Ultimately, we should have the test reliably passing.

Desktop (please complete the following information):

• OS: Originally observed on WIN but can happen anywhere

Additional context
NVR required to give a path instead of video file.

Would you like to work on the issue?
@mohammedzakikochargi

[mraduldubey]

@mohammedzakikochargi
Update this issue