Hi all,
In order to optimize performance, in the qtblend transition (in the qt
module), I try to detect if the top frame in the transition has
transparency, and if it doesn't, instead of performing the transition I
just return the top frame.
However currently, to check if a frame has transparency I use the
following:
if ( *format == mlt_image_rgb24a || mlt_frame_get_alpha( b_frame ) )
{
// The frame has an alpha channel
}
However, some YUV formats with alpha, like AV_PIX_FMT_YUVA444P10LE, don't
obey these rules since the alpha buffer is not created.
Shouldn't the alpha buffer be created by default for this codecs, or is
there any other way to detect that the frame has alpha?
Thanks for your advice.
You can find sample video files in this bug report:
https://bugs.kde.org/show_bug.cgi?id=391963
Regards
Jean-Baptiste
------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
_______________________________________________
Mlt-devel mailing list
Mlt-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/mlt-devel
