contrib: added target for libffi since it is required to compile glib, which in turn is needed for Fluidsynth on Darwin (refs #10014)

contrib: added target for glib since this is a required dependency to compile fluidsynth (refs #10014)

http://gonze.com/playlists/playlist-format-survey.html#ASX

somehow #3435

Close #10019

Having pts doesn't mean we have a valid index.
Also, waiting 50 frames, including all streams is pointless.
We expect at least a keyframe within 60 sec on seek track.
This wait is lowered to 5 sec of data if we estimate a low
bandwidth (that one might need a better hint)

Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Now callbacks are thread-safe and don't block UI thread while
calculating coefs again.

Also remove callbacks on Close.

button might be unmatched

GetMainName() can return a pointer to temporary string::

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Set time base on fps=25 as some codecs need it to be set (atleast DIV3).

mpeg-based codecs seems to require this to be able to produce ~cbr
output. Should Fix #8239 and #9983

Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>