[Bug 645385] Transitions act randomly depending on the video codec in use.

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Fri Apr 15 10:16:07 PDT 2011


https://bugzilla.gnome.org/show_bug.cgi?id=645385
  GStreamer | gst-editing-services | git

Brandon Lewis <brandon_lewis> changed:

           What    |Removed                     |Added
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                 CC|                            |brandon_lewis at alum.berkeley
                   |                            |.edu

--- Comment #2 from Brandon Lewis <brandon_lewis at alum.berkeley.edu> 2011-04-15 17:16:01 UTC ---
More information, please.

The first problem you mention will sometimes happen when the resolutions of the
two sources are different. We don't handle this case very well at the moment.
Some combination of videobox/scale might be required inside the crossfade
transition to scale the two streams relative to each other according to some
simple rules (I think you can also use pad-properties on videomixer input pads
to do scaling and position as well, but the borders will be transparent).

Do you get any warnings or errors (GST_DEBUG=2) on the console?. Obvious
culprits for the second case will be "Not linked" errors. A full debug log
would be more useful. My guess is that it's a caps-negotiation failure
somewhere in the decoder->colospace->videomixer portion of the pipeline.

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