Fixes a case where an astronomically large bitrate could be shown
unintentionally.

Because output stop timing has been fixed, there is no need to send the
remaining packets in the queue because it now just waits for the stop
timing anyway.

rtmp-services: Nood add offical recommends

Fixes a bug where if a D3D9 program recreates its device the capture
would become invalid.  Certain games (especially blizzard games) will
completely recreate their Direct3D device if a critical D3D9 error
occurs.

Fixes an issue where the audio meter/fader would call an obs function
and lock another mutex, potentially causing a mutual inverted lock in
another thread.

Adds the ability to add video playlists via libvlc instead of via the
media source.  This is mostly just being added as a secondary option to
the media source to reduce maintenance costs and save time.  Currently
libff cannot pause/unpause/seek, and isn't programmed to handle
playlists yet.

If VLC is installed on the computer (with the same architecture) it will
allow video playback via libVLC.  In the future, users should be able to
optionally download VLC libraries via the installer as well if they
don't want to necessarily install VLC to get the plugin working.

This plugin performs runtime linking instead of compile-time linking;
compiling VLC is not required, only its headers are required.  To
compile, clone the VLC repository and set the VLCPath cmake variable to
point to the VLC repository directory.

When using GPU conversion for 4:2:0 frames on async video sources, it
would create a texture bigger than necessary and try to copy too much
data from the frame, resulting in a crash.

win-dshow: Fix audio output mode not showing up

The UI expects everything to be in UTF-8, so convert all window strings
to UTF-8 whenever getting a window name.

The internal data of a property value would be converted to QString and
Qt would inevitably try to convert the characters to another encoding,
causing the internal data to possibly become invalid.  Instead, use
QByteArray to treat it as nothing more than a byte array.

The xcomposite window capture crashes were due to a few factors:
-------------------------------
1.) The source's X error handler was possibly being overwritten by
another part of the program despite us locking the display, presumably
something in Qt which isn't locking the display when pushing/popping its
own error handler (though this is not yet certain).  The source's calls
to X functions happen in the graphics thread, which is separate from the
UI thread, and it was noticed that somehow the error handler would be
overwritten almost seemingly at random, indicating that something else
in the program outside of OBS code was not locking the display while
pushing/popping the error handler.

To replicate this, make it so that the source cannot find the target
window and so it continually searches for it each video_tick call, then
resize the main OBS window continually (which causes Qt to push/pop its
own error handlers).  A crash will almost always occur due to BadWindow
despite our error handling.

2.) Calling X functions with a window ID that no longer exists,
particularly XGetWindowAttributes, in conjunction the unknown error
handler set in case #1 would cause the program to outright crash because
that error handler is programmed to crash on BadWindow for whatever
reason.  The source would call X functions without even checking if
'win' was 0.

3.) The source stored window IDs (in JSON, even if they've long since
become invalid/pointless, such as system restarts).  This is a bad
practice and will result in more cases of BadWindow.

Fixing the problem (reducing the possibility of getting BadWindow):
-------------------------------
Step 1.) Deprecate and ignore window IDs in stored settings.  Instead of
using window IDs to find the window, we now must always search the
windows and find the target window via the window name exclusively.
This helps ensure that we actually consistently have a working window
ID.

Step 2.) Do not call any X functions if the window ID is 0.

Step 3.) Reset the window ID to 0 any time the window has updated, and
make the source find the window again to ensure it still exists before
attempting to use any X functions on the window ID again.

Apparently dlclose can crash if you use it with a null pointer.

Closes jp9000/obs-studio#549

Having volatile variables inside of a union causes a C1001 compiler
error in visual studio 2015 update 2.

Closes jp9000/obs-studio#544

linux-pulseaudio: Check for failed operations

Add checks to make sure the pulseaudio operation objects are actually
valid and the request did not fail right away. Other pulseaudio
functions dealing with the objects expect them not to be NULL,
otherwise they will kill the application with a failing assert.

For some reason in the FFmpeg output, this AVCodecContext variable is
being set to 1 by FFmpeg itself somewhere, and it's causing a massive
slowdown when encoding with FFmpeg directly.  This should be set to 0 to
specify to use as many threads as necessary.

Fixes a crash with audio format enumeration

When randomizing the image slide show, do not repeat the same image more
than once in a row

(Note: This commit also modifies the UI)

The editable list only had two types: A type that allows both files and
URLS, and a type that only allows strings.

This changes it so the editable list can have a "files only" type, a
"files and URLs" type, and a "strings only" type.

It's annoying when you can't see more than 10 items in a combo box and
are forced to use a scroll bar on a combo box.

This had the possibility of leaving the rc variable uninitialized.