Setting sync=false on either d3dvideosink or dshowvideosink seems to make things work alright, so it seems to be a timestamping/clocking problem. I've checked the timestamps with identity, and they appear correct (monotonically increasing from 0 with 33ms steps). I am getting a warning "Failed to configure latency of 0:00:00.0000000" from gst_bin_do_latency_func(), however I don't see how that could be related to my particular problem, other than indicating there's a clock problem. Help is appreciated!
-Josh
On Wed, Jun 29, 2011 at 1:32 PM, Josh Doe
<[hidden email]> wrote:
I've managed to get it working using glimagesink, however it still performs horribly with dshowvideosink. Instead of setting the buffer flag to GST_BUFFER_FLAG_DISCONT for the
first frame (decklinksrc->num_frames==0), I pushed a
gst_event_new_newsegment(). Also I set GST_BUFFER_OFFSET_END to match
OFFSET (though I don't think this matters). The timestamps and duration all seem to be set correctly, so I'm not sure what else could be the problem, dshowvideosink works just fine with videotestsrc.
-Josh
On Mon, Jun 27, 2011 at 1:20 PM, Josh Doe
<[hidden email]> wrote:
I'm working on making decklinksrc work on Windows, and can stream
to disk fine (at normal framerates, using composite NTSC source), but if i display to the screen (e.g. using dshowvideosink) the framerate drops to
something like 1fps.
What might be the cause of this?
FYI, DeckLink provides a COM interface, and I've copied the relevant bits from dshowvideosink for handling this.
Thanks,
-Josh
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