On Mon, 2012-01-16 at 15:47 -0800, wlm014 wrote:
> I am running into a very odd problem with using x264enc and tees. It is
> worth mentioning that I am working on Windows.
>
> I have the following pipeline that runs fine.
>
> gst-launch -v videotestsrc ! tee name=mytee ! queue ! ffmpegcolorspace !
> x264enc ! fakesink
>
> However, when I try to attach another element to the tee (in this case an
> autovideosink element), the pipeline freezes and shows only one frame of
> video. For example,
>
> gst-launch -v videotestsrc ! tee name=mytee ! queue ! ffmpegcolorspace !
> x264enc ! fakesink mytee. ! queue ! autovideosink
>
> Does not work. It will print out the normal caps information and then
> nothing else happens. This seems to be a very straight forward pipeline
> that should work relatively easy. Is there something I am missing here or
> is this an error with gstreamer?
x264 by default has a fairly high latency, easily up to ~3 seconds or
so. queue by default only buffers up to one second. You need to unset or
increase the limits on the queues, like:
queue max-size-time=0 max-size-bytes=0 max-size-buffers=0
Alternatively, try x264enc tune=zerolatency
Cheers
-Tim
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