Noah Bergbauer (12020-01-26): > I am currently working on a patch that implements DXGI desktop > capturing and WASAPI audio capturing for Windows. > > For this, I implemented two new devices in libavdevice. > > The basics work, but now I'm not sure how to synchronize the audio > stream with the video stream. Specifically, the two devices > obviously maintain independent pts, starting from the point in time > when they were first read from. So while in most cases there > is no human-noticeable offset, this does occasionally - with some bad > luck - produce a rather large error. > > So is there anything I'm missing here? How can I make sure the two > streams sync up (other than hardcoding some kind of communication > between them)?
Devices that do live capture should, at least as an option, use the absolute clock as pts. With that information, syncing becomes easy. Regards, -- Nicolas George
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