Originally, before file splitting was introduced, I made the choice to
simply ignore the last frame in the packet queue of the muxer, because
frame N+1 is required to properly determine the duration and I figured
nobody would notice if their recording is one frame short.
However, when using frame splitting this would result in the last frame
before the split being dropped. To fix this, we can simply reuse the
previous sample's duration for the final sample in a file. Since OBS
only does CFR, they should all be identical anyway.
derrod
575c77f19d