This new scale filter computes pixels by weighing the coverage area of
source pixels over the target pixel. This algorithm works well for both
upsampling and downsampling, but was mainly designed to upscale
high-quality low-resolution sources like RGB/HDMI retro consoles. I've
heard of people using odd workarounds like scaling up to very high
resolutions before scaling back down to preserve pixel shartpness. This
algorithm directly addresses this use-case in a much more direct
fashion.
The Area scale filter does a better job of preserving the thickness of
thin features than the Point filter.
The Area scale filter does not look at source pixels that lie outside
of the target pixel, leading to a much sharper image than Bilinear,
Bicubic, and Lanczos filters.
This filter should interpolate pixels in linear space, but OBS is not
equipped to do that at the moment.
libobs: Add GPU effect, and wire up scene serialization.
obs-filters: Add Area as an option for scale_filter.
UI: Add Area as an option for both scene items, and canvas downscaling.
The message boxes that tell you that the browser is initializing or that
you're authenticating with twitch are annoying on startup. It makes
sense to do it in the settings/autoconfig dialogs where you sort of need
to know what's going on while waiting for it to connect, but on startup
it's not really necessary and can be kind of annoying.
This was a feature that was available when you chose custom RTMP server;
it was not considered when making the new version. Note: it looks
unslightly, but it works for now.
Fixes a bug where if you set the advanced output recording encoder to
"use stream encoder", then reopened the settings window, that option
would become enabled again.
The post-output rescale option in advanced output mode cannot currently
be used with texture-based encoders, so disable the option when a
texture-based encoder is selected.
(This commit also modifies UI)
Adds a universal function for determining whether video output is
currently active, rather than having to use video_output_active() on the
value returned by obs_get_video().
Makes it so that services can have custom handling on a per-service
basis. The bottom part of the service pane is now a stacked widget
which can now be customized for different types of services
(particularly OAuth services).
The ability to use multiple separate QSV encoders was added in Pull
Request #1341 (commit 3a08e858a68aeecaf6499973b55988db5a903ae5).
This error message was left in place, so let's remove it now.
The variable name changes were done with the intent to ease the
abstraction of the scene, preview and program width/height size
so its not related with the canvas size but directly related with
our concept of scenes.
Adds an option to enable/disable blocking hotkeys when the window is in
focus which is normally used in order to prevent hotkey/shortcut
conflicts. This does not apply to the settings window; the hotkey
behavior is unchanged with the settings window (in order to prevent
hotkeys from being used while setting hotkeys for example).
Closesobsproject/obs-studio#1267
Add a new algorithm to calculate the true-peak. It implements the
Whittaker- Shannon interpolation from four samples to create 4
intermediate samples (5 x oversampling) inbetween the middle two
samples.
With 4 samples and 4 intermediate samples the algorithm can be
implemented as a 4x4 vector-matrix cross product, which is ideal for
SSE.
I've also replaced the sample-peak algorithm using SSE as well to
improve performance.
Closesobsproject/obs-studio#1189
The decay rate of the audio meters can now be selected in the audio
settings. The values are:
- "Fast" (OBS default, 40 dB / 1.7s)
- "Medium" (Type I PPM, 20 dB / 1.7s)
- "Slow" (Type II PPM, 24 dB / 2.8s)
Closesjp9000/obs-studio#1143
(also obs, deps/media-playback, libobs/audio-monitoring, decklink,
linux-alsa, linux-pulseaudio, mac-capture, obs-ffmpeg, win-dshow,
win-wasapi)
Default channel layout for 4 channels is 4.0 in FFmpeg.
Replacing quad with 4.0 will improve compatibility since FFmpeg has
better support of its default channel layouts.
This adds the ability to switch to a scene by double-clicking it when in
studio mode.
(Edit by Jim: In case this change is undesired by the user, this has
been changed to be an option in general settings; disabled by default)
Closesjp9000/obs-studio#1029
(This commit also modifies the following modules: UI,
deps/media-playback, coreaudio-encoder, decklink, linux-alsa,
linux-pulseaudio, mac-capture, obs-ffmpeg, obs-filters, obs-libfdk,
obs-outputs, win-dshow, and win-wasapi)
Adds surround sound audio support to the core, core plugins, and user
interface.
Compatible streaming services: Twitch, FB 360 live
Compatible protocols: rtmp / mpeg-ts tcp udp
Compatible file formats: mkv mp4 ts (others untested)
Compatible codecs: ffmpeg aac, fdk_aac, CoreAudio aac,
opus, vorbis, pcm (others untested).
Tested streaming servers: wowza, nginx
HLS, mpeg-dash : surround passthrough
Html5 players tested with live surround:
videojs, mediaelement, viblast (hls+dash), hls.js
Decklink: on win32, swap channels order for 5.1 7.1
(due to different channel mapping on wav, mpeg, ffmpeg)
Audio filters: surround working.
Monitoring: surround working (win macOs linux (pulse-audio)).
VST: stereo plugins keep in general only the first two channels.
surround plugins should work (e.g. mcfx does).
OS: win, macOs, linux (alsa, pulse-audio).
Misc: larger audio bitrates unlocked to accommodate more channels
NB: mf-aac only supports mono and stereo + 5.1 on win 10
(not implemented due to lack of usefulness)
Closesjp9000/obs-studio#968
Replay buffer is currently only supported in simple mode. This change
adds support to advanced mode and is, for the most part, a mirror of the
addition of replay buffer to simple mode.
Mantis-bug: https://obsproject.com/mantis/view.php?id=792Closesjp9000/obs-studio#1019
