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  • GStreamerGStreamer
  • gst-plugins-basegst-plugins-base
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  • #769
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Issue created Jun 08, 2020 by Chris Ayoup@achris

basetextoverlay blocks on text pad when 'silent' property is true

If the silent property is set to true, basetextoverlay simply pushes video buffers (https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/blob/master/ext/pango/gstbasetextoverlay.c#L2795) and gst_base_text_overlay_pop_text() never gets called. As a result, when buffers are being fed to the text_sink, gst_base_text_overlay_text_chain() blocks forever as an existing buffer never got consumed (https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/blob/master/ext/pango/gstbasetextoverlay.c#L2671-2681 ).

I wasn't expecting this to happen (until I read the code, of course). I expected the text to continue to be consumed silently. Is this intentional behaviour?

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