Bug#870814: show message if unable to play video

[積丹尼 Dan Jacobson]

>>>>> "AG" == Alberto Garcia <berto at igalia.com> writes:
AG> On Sat, Aug 05, 2017 at 09:07:59PM +0800, 積丹尼 Dan Jacobson wrote:
>> Package: libwebkit2gtk-4.0-37
>> Version: 2.17.5-2
>> 
>> $ set https://www.youtube.com/watch?v=3i1r12rkqAU
>> $ /usr/lib/i386-linux-gnu/webkit2gtk-4.0/MiniBrowser $@
>> User just sees a black box where the video is supposed to play.

AG> Is there any error message if you launch the MiniBrowser from the
AG> command line?

No error messages in all cases.

But there is just a black box where the video should be playing.

Does it play for you?

Or please have the MiniBrowser print a message saying what the problem is.