[FFmpeg-devel] [PATCH] Speed up wtv index creation

[popcorn mix]

The index creation is O(N^2) with number of entries (typically thousands).
On a Raspberry Pi this can take more than 60 seconds to execute for a recording of a few hours.
    
By replacing with an O(N) loop, this takes virtually zero time

This patch has been in all Pi builds of Kodi for the last couple of years,
so it is quite widely tested. No change in FATE output.
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