Use it only if specified by --aout arg.
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

This failed on Android, for example

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: Ilkka Ollakka <ileoo@videolan.org>

When input is H.264 they don't have pts/dts sometimes before decoder, but
dropping non-dated packets screw up decoder.

This reverts commit 57b356e2.

Use fps video filter for framerate conversion. Also do framerate conversion
after deinterlacer so we don't screw deinterlacing with frame dropping.

Also reduce intentation of code.

If user doesn't give videobitrate use some reasonable default to get ok output
from avcodec transcode (for example mpeg4 video).

Everybody should install the underlying libraries somewhere and, if
necessary, pass --with-* to specify the installation path (this is
automatic for VLC contribs).

Refactor so deinterlacer/scaler is fed with all input pictures and not only
ones that encoder needs.

Auto-detect current osx version, overwrite path to avoid influences
from macports or homebrew.

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