- High output quality; Lanczos3 scaling, subpixel precision everywhere,
white balance adjustment, mix of 16- and 32-bit floating point
- for intermediate calculations, dithered output.
+ for intermediate calculations, dithered output, optional 10-bit input
+ and output support.
- Proper sound support: Syncing of multiple unrelated sources through
- high-quality resampling, freely selectable input, cue out for headphones,
- dynamic range compression, simple EQ (low-cut), level meters conforming
- to EBU R128.
+ high-quality resampling, multichannel mixing with separate effects
+ per-bus, cue out for headphones, dynamic range compression,
+ three-band graphical EQ (pluss a fixed low-cut), level meters conforming
+ to EBU R128, automation via MIDI controllers.
- Theme engine encapsulating the design demands of each individual
event; Lua code is responsible for setting up the pixel processing
pipelines, running transitions etc., so that the visual look is
consistent between operators.
+ - HTML rendering (through Chromium Embedded Framework), for high-quality
+ and flexible overlay or other graphics.
+
+ - Comprehensive monitoring through Prometheus metrics.
+
[1] For reference, that is: Core i7 4600U (dualcore 2.10GHz, clocks down
to 800 MHz after 30 seconds due to thermal constraints), Intel HD Graphics
4400 (ie., without the extra L4 cache from Iris Pro), single-channel DDR3 RAM
(so 12.8 GB/sec theoretical memory bandwidth, shared between CPU and GPU).
-Nageru is in beta stage. It currently needs:
+Nageru currently needs:
- An Intel processor with Intel Quick Sync, or otherwise some hardware
H.264 encoder exposed through VA-API. Note that you can use VA-API over
DRM instead of X11, to use a non-Intel GPU for rendering but still use
- Quick Sync (by giving e.g. “--va-display /dev/dri/renderD128”).
+ Quick Sync (Nageru does this automatically for you if needed).
- Two or more Blackmagic USB3 or PCI cards, either HDMI or SDI.
The PCI cards need Blackmagic's own drivers installed. The USB3 cards
- are driven through the “bmusb” driver embedded in bmusb/, using libusb-1.0.
- You want a recent kernel and libusb-1.0; see below.
+ are driven through the “bmusb” driver, using libusb-1.0. If you want
+ zerocopy USB, you need libusb 1.0.21 or newer, as well as a recent
+ kernel (4.6.0 or newer). Zerocopy USB helps not only for performance,
+ but also for stability. You need at least version 0.7.0.
- Movit, my GPU-based video filter library (https://movit.sesse.net).
- You will need at least version 1.3.1.
+ You will need at least version 1.5.2.
- Qt 5.5 or newer for the GUI.
+ - QCustomPlot for the histogram display in the frame analyzer.
+
- libmicrohttpd for the embedded web server.
- - x264 for encoding high-quality video suitable for streaming to end users
- (but see below).
+ - x264 for encoding high-quality video suitable for streaming to end users.
- - ffmpeg for muxing, and for encoding audio.
+ - ffmpeg for muxing, and for encoding audio. You will need at least
+ version 3.1.
- Working OpenGL; Movit works with almost any modern OpenGL implementation.
Nageru has been tested with Intel on Mesa (you want 11.2 or newer, due
to critical stability bugfixes), and with NVIDIA's proprietary drivers.
- AMD's proprietary drivers (fglrx) are known not to work due to driver bugs;
- I am in contact with AMD to try to get this resolved.
+ The status of AMD's proprietary drivers is currently unknown.
- libzita-resampler, for resampling sound sources so that they are in sync
between sources, and also for oversampling for the peak meter.
- - Lua, for driving the theme engine.
+ - LuaJIT, for driving the theme engine.
+ - Optional: CEF (Chromium Embedded Framework), for HTML graphics.
+ If you build without CEF, the HTMLInput class will not be available from
+ the theme. You can get binary downloads of CEF from
-If on Debian stretch or something similar, you can install everything you need
-with:
+ http://opensource.spotify.com/cefbuilds/index.html
+
+ Simply download the right build for your platform (the “minimal” build
+ is fine) and add CEF_DIR=<path>/cef_binary_X.XXXX.XXXX.XXXXXXXX_linux64
+ on the make command line (substituting X with the real version as required).
- git submodule update --init
- apt install qtbase5-dev qt5-default pkg-config libmicrohttpd-dev \
- libusb-1.0-0-dev liblua5.2-dev libzita-resampler-dev libva-dev \
- libavcodec-dev libavformat-dev libswscale-dev libavresample-dev \
- libmovit-dev libegl1-mesa-dev libasound2-dev libx264-dev
-Exceptions as of June 2016:
+If on Debian stretch or something similar, you can install everything you need
+with:
- - You need libusb 1.0.21 or newer (not yet released; you will need to
- use git) if you want zerocopy USB. Zerocopy USB helps not only for
- performance, but also for stability.
+ apt install qtbase5-dev libqt5opengl5-dev qt5-default libqcustomplot-dev \
+ pkg-config libmicrohttpd-dev libusb-1.0-0-dev libluajit-5.1-dev \
+ libzita-resampler-dev libva-dev libavcodec-dev libavformat-dev \
+ libswscale-dev libavresample-dev libmovit-dev libegl1-mesa-dev \
+ libasound2-dev libx264-dev libbmusb-dev protobuf-compiler \
+ libprotobuf-dev
- - You want kernel 4.6.0 or newer to get zerocopy USB. Older kernels
- also lack some workarounds for LPM (link power management) and bandwidth
- allocation issues with USB3.
+Exceptions as of April 2018:
- - There is a critical bug fix with x264 speed control in
- 928bd9d5def4f0ca5071ea176a11b816a01e6495, pushed to git mid-June 2016.
+ - You will need Movit from testing or unstable; stretch only has 1.4.0.
- - Nageru depends on an avformat API for marking block boundaries in the
- muxed byte stream that didn't enter ffmpeg before
- 4e7a9212820a56bc731c09b2f11ae1422d070837, pushed to git late June 2016.
+ - You will need bmusb from testing or unstable; stretch only has 0.5.4.
+ - Debian does not carry CEF (but it is optional).
The patches/ directory contains a patch that helps zita-resampler performance.
It is meant for upstream, but was not in at the time Nageru was released.
If you have a fast CPU (typically a quadcore desktop; most laptops will spend
most of their CPU on running Nageru itself), you can use x264 for the outgoing
stream instead of Quick Sync; it is much better quality for the same bitrate,
-and also has proper bitrate controls. Simple add --http-x264-video on the
+and also has proper bitrate controls. Simply add --http-x264-video on the
command line. (You may also need to add something like "--x264-preset veryfast",
since the default "medium" preset might be too CPU-intensive, but YMMV.)
The stream saved to disk will still be the Quick Sync-encoded stream, as it is
Nageru's home page is at https://nageru.sesse.net/, where you can also find
-contact information and link to the latest version.
+contact information, full documentation and link to the latest version.
Legalese: TL;DR: Everything is GPLv3-or-newer compatible, and see
-Intel's copyright license at h264encode.h.
+Intel's copyright license at quicksync_encoder.h.
Nageru is Copyright (C) 2015 Steinar H. Gunderson <steinar+nageru@gunderson.no>.
along with this program. If not, see <http://www.gnu.org/licenses/>.
-Portions of h264encode.h and h264encode.cpp:
+Portions of quicksync_encoder.h and quicksync_encoder.cpp:
Copyright (c) 2007-2013 Intel Corporation. All Rights Reserved.
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
+
+
+Marked parts of theme.cpp (Lua shims):
+
+The MIT License (MIT)
+
+Copyright (c) 2013 Hisham Muhammad
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
projects / nageru / blobdiff