(This commit also modifies libobs, UI)

v4l2_outputparm includes unused fields, defined as
	__u32		reserved[4]

Accesses to reserved[4] was out of bounds.  Fix this and simplify by
just zeroing the entire struct v4l2_streamparm instead.

Using modinfo dumps all the output into the terminal instead redirect
all output to dev/null.

It's possible for files to have some/all characters uppercase.

Fixes #3562

CONTRIBUTING.rst: Update CONTRIBUTING doc

Update link to compiling and building instructions to point to the
GitHub repo at the "obsproject" org URL. Replace link to Mantis with
link to GitHub Issues for our bug tracker to mirror the contents in
README.rst.

We disable the stream encoder setting in Advanced Output Mode when an
output is active, so let's also disable the stream encoder setting in
Simple Output Mode when an output is active.

Co-authored-by: Nlvsti <lvsti@users.noreply.github.com>
Co-authored-by: NSebastian Beckmann <beckmann.sebastian@outlook.de>
Co-authored-by: NStefan Huber <sh@signalwerk.ch>
Co-authored-by: NRyohei Ikegami <iofg2100@gmail.com>
Co-authored-by: NColin Dean <colin.dean@target.com>
Co-authored-by: NWolfgang Ladermann <extern.ladermann_wolfgang@allianz.de>
Co-authored-by: NSimon Eves <simon.eves@omnisci.com>
Co-authored-by: NColin Nelson <colnnelson@google.com>
Co-authored-by: NYoshimasa Niwa <niw@niw.at>
Co-authored-by: NMichael Karliner <mike@modern-industry.com>
Co-authored-by: NJason Grout <jgrout6@bloomberg.net>
Co-authored-by: NAlfredo Inostroza <jadenguy@gmail.com>
Co-authored-by: NDaniel Kennett <daniel@cascable.se>
Co-authored-by: NGary Ewan Park <gep13@gep13.co.uk>
Co-authored-by: NJosé Carlos Cieni Júnior <cienijr@outlook.com>

UI: Enable sps/pps (video headers) repetition (for srt/mpegts)

fixes: obsproject#3053

Using a fixed path would allow malware on a compromised system to
perform a DLL planting attack. Reported by Erik Wynter.

Add the content of the XDG_SESSION_TYPE environment variable to
the output log if it is set. This is usually set on modern Linux
distributions and typically carry either "x11" or "wayland" when
run from a desktop environment.

This is independent from the QT_QPA_PLATFORM environment variable
which would allow OBS Studio to run inside a wayland session. The
session type it runs on does have an implication on the behavior of
some plugins like screen and window capture. So having this
information exposed here is extremely helpful for diagnosing
issues.

Add YouTube RTMPS service to services.json as a beta.

Viloud is an online video platform for creating and streaming live,
linear and on-demand TV channels.

Fixes a null pointer dereference in the output filter, and fixes a bug
where the output filter would incorrectly hold a reference to the filter
graph.

This obs_service_t object callback was implemented specifically for
services which may have a maximum recommended width, height, and
framerate that needs to be enforced.

New profile state is similar to first start: settings are wiped, encoders
not setup. It may make sense to show the auto configuration wizard when
a new profile is made as well.

There is a checkbox option to show the wizard. If a profile is created
with the checkbox off, the checkbox will remain defaulted to off next
prompt.

Also adds a tweak to the brew update which _might_ fix Azure CI.

This also enables hardware decoding by default for stingers.

Note: per c2a2bc5e this will not affect
webm files with alpha.

Fixes #3357

Same changes as 0c0ffb34

AdvancedOutput::AdvancedOutput(OBSBasic *main_) lacked
a proper event handler connection

OBS already handles a couple of different audio formats, this expands
alsa input to try these additional formats for devices with weird format
support.

fixes #3547

Detect other instances of the obs by inspecting running applications
with same bundle ID.

fixes: #3053

RNNoise symbols may collide with external ones provided by
libcodec2.so which FFMPEG may pull in automatically. Changing
the visibility of these symbols will guarantee the use of the
internal ones and not pick some (potential incompatible) from
outside.

fixes #3561

Helps prevent Stats dock from resizing OBS when long text is set.

For some reason, currently unknown, FFmpeg logging has to be set to
something in order for HLS to not fail on Windows, even if it's just an
empty function.

(Author comment: I don't feel comfortable not knowing why, my theory is
that FFmpeg has an issue with this internally with HLS on Windows
related to logging or how it's trying to log, I have absolutely no idea
what's going on and if someone can enlighten me or debug FFmpeg itself
it'd be real nice to know why.)