Nageru is a live video mixer, based around the standard M/E workflow.
+Futatabi is a multicamera slow motion video server (currently undocumented).
Features:
- 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, using libusb-1.0. If you want
- zerocopy USB, you need libusb 1.0.21-rc1 or newer, as well as a recent
+ 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.
+ but also for stability. You need at least version 0.7.3.
- 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.
- - ffmpeg for muxing, and for encoding audio. You will need at least
- version 3.1.
+ - FFmpeg for muxing, and for encoding audio. You will need at least
+ version 4.0.
- 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. You will need at least version 2.1.
+ - SQLite, for storing Futatabi state.
-If on Debian stretch or something similar, you can install everything you need
-with:
+ - libjpeg, for encoding MJPEG streams when VA-API JPEG support is not
+ available.
- apt install qtbase5-dev libqt5opengl5-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 libbmusb-dev
+ - Zita-resampler, for adjusting audio to be in sync with video.
-Exceptions as of July 2016:
+ - Protocol Buffers (protobuf), for storing various forms of settings and
+ state.
- - libusb 1.0.21-rc1 is not yet in stretch or sid; you need to fetch it
- from experimental.
+ - Meson, for building.
- - libbmusb-dev is still in unstable only, not testing. You can get a recent
- copy using “git submodule update --init” and building with
- “make EMBEDDED_BMUSB=yes”.
+ - 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
+ http://opensource.spotify.com/cefbuilds/index.html
+
+ Simply download the right build for your platform (the “minimal” build
+ is fine) and add -Dcef_dir=<path>/cef_binary_X.XXXX.XXXX.XXXXXXXX_linux64
+ on the meson command line (substituting X with the real version as required).
+
+
+If on Debian buster or something similar, you can install everything you need
+with:
+
+ 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 libsqlite3-dev meson libjpeg-dev
+
+Exceptions as of December 2018:
+
+ - Debian does not carry CEF (but it is optional). You can get experimental
+ (and not security-supported) CEF Debian packages built for unstable at
+ http://storage.sesse.net/cef/, and then configure Nageru with
+
+ meson obj -Dcef_dir=/usr/lib/x86_64-linux-gnu/cef -Dcef_build_type=system -Dcef_no_icudtl=true
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.
It is taken to be by Steinar H. Gunderson <sesse@google.com> (ie., my ex-work
email), and under the same license as zita-resampler itself.
-To start it, just hook up your equipment, type “make” and then “./nageru”.
+Nageru uses Meson to build. For a default build, type
+
+ meson obj && cd obj && ninja
+
+To start it, just hook up your equipment, and then type “./nageru”.
+
It is strongly recommended to have the rights to run at real-time priority;
it will make the USB3 threads do so, which will make them a lot more stable.
(A reasonable hack for testing is probably just to run it as root using sudo,
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
projects / nageru / blobdiff