Meaning of lost_track_buffer in ByteTrack

[amaletzk]

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Hi,

I do not understand the precise meaning of lost_track_buffer in the ByteTrack class. It is only used to initialize max_time_lost, which, however, seems to refer to a number of frames rather than a time (and so is a misnomer, IMHO). Furthermore, that variable is initialized as

self.max_time_lost = int(frame_rate / 30.0 * lost_track_buffer)

which does not make sense to me: why is there a division by 30?

Instead, I would understand either of the following possibilities:

• Remove the division by 30. In that case, lost_frame_buffer refers to the time (in seconds) a track is retained.
• Initialize max_time_lost with int(lost_track_buffer). In that case, lost_track_buffer refers to the number of frames directly, in agreement with the current docstring.

Thanks for clarifying this, and thanks for your great work!

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