Nageru and Futatabi 1.8.1, December 30th, 2018 - Futatabi can now communicate its queue status through a subtitle track, and Nageru can consume it. This allows Nageru themes to get precise information programmatically, e.g. to show status or automatically switch away when the queue is about to end. - Futatabi can now reuse the computed flow across successive frames when interpolating between the same frame pair. This significantly reduces the GPU load when doing super-slow motion (slower than 0.5x). - Various smaller fixes. Nageru and Futatabi 1.8.0, December 20th, 2018 - Initial release of Futatabi, a multicamera slow motion video server designed to be used with Nageru. Futatabi is currently in alpha stage and largely undocumented. - Add support for multi-camera export from Nageru. A multi-camera stream contains all frames from all camera inputs (unless overridden by --mjpeg-export-cards), unprocessed except for MJPEG encoding. MJPEG encoding is done in hardware (via VA-API) on Skylake or newer, or using libjpeg otherwise. The intended user of this stream is Futatabi. Nageru 1.7.5, November 11th, 2018 - Fix a bug where --record-x264-video would not work when VA-API was not present, making the option rather useless (broken in 1.7.2). Bug reported by Peter De Schrijver. - The build system has been switched to Meson; see the README for new build instructions. - Various smaller fixes. Nageru 1.7.4, August 31st, 2018 - Rework the x264 speedcontrol presets, again. (They earlier assumed we could control B-frame settings on the fly, which we cannot with threaded lookahead.) Also support x264 >= 153, which can support multiple bit depths in the same library. - Default to SDI inputs instead of HDMI. - Add a mode to run in full screen (--fullscreen). Adapted from a patch by Yoann Dubreuil. - Add support for lift/gamma/gain in the theme. Patch by Alexandre Thomazo. Nageru 1.7.3, May 22nd, 2018 - When using multichannel audio, add a control for adjusting the stereo width (from normal stereo to mono, all the way to inverted stereo). - Removed --http-coarse-timebase (it is now always on). - Various bugfixes. Nageru 1.7.2, April 28th, 2018 - Several improvements to video (FFmpeg) inputs: You can now use them as audio sources, you can right-click on video channels to change URL/filename on-the-fly, themes can ask for forced disconnection (useful for network sources that are hanging), and various other improvements. Be aware that the audio support may still be somewhat rough, as A/V sync of arbitrary video playout is a hard problem. - The included themes have been fixed to properly make the returned chain preparation functions independent of global state (e.g. if the white balance for a channel was changed before the frame was actually rendered). If you are using a custom theme, you may want to apply similar fixes to it. - In Metacube stream output, mark each keyframe with a pts metadata block. This allows Cubemap 1.4.0 or newer to serve fMP4 fragments for HLS from Nageru's output, without any further remuxing or transcoding. - If needed, Nageru will now automatically try to autodetect a usable --va-display parameter by probing all DRM nodes for H.264 encoders. This removes the need to set --va-display in almost all cases, and also removes the dependency on libpci. - For GPUs that support querying available memory (in practice only NVIDIA GPUs at the current time), expose the amount of used/total GPU memory both on standard output and in the Prometheus metrics (as well as included Grafana dashboard). - The Grafana dashboard now supports heatmaps for the chosen x264 speedcontrol preset (requires Grafana 5.1 or newer). (There used to be a heatmap earlier, but it was all broken.) - Various bugfixes. Nageru 1.7.1, March 26th, 2018 - Various bugfixes, mostly related to HTML and video inputs. Nageru 1.7.0, March 8th, 2018 - Support for HTML5 graphics directly in Nageru, through CEF (Chromium Embedded Framework). This performs better and is more flexible than integrating with CasparCG over a socket. Note that CEF is an optional component; see the documentation for more information. - Add an HTTP endpoint for enumerating channels and one for getting only their colors. Intended for remote tally applications; set the documentation. - Add a video grid display that removes the audio controls and shows the video channels only, potentially in multiple rows if that makes for a larger viewing area. - Themes can now present simple menus in the Nageru UI. See the documentation for more information. - Various bugfixes. Nageru 1.6.4, January 25th, 2018 - Fix compilation with the upcoming FFmpeg 3.5. - Switch to LuaJIT for the theme engine, which is faster. - Various bugfixes and smaller optimizations. Nageru 1.6.3, November 8th, 2017 - Add quick-cut keys (Q, W, E, etc.) below the preview keys. Since it's easy to hit these by accident and put up a signal you didn't want, they are disabled by default (they can be enabled in the video menu, or with the command line flag --quick-cut-keys). - Rework the x264 speedcontrol presets to better match newer x264 versions. - Add an option for changing the HTTP port (--http-port). - Various smaller bug and integration fixes. Nageru 1.6.2, July 16th, 2017 - Various smaller Kaeru fixes, mostly around metrics. Also, you can now adjust the x264 bitrate in Kaeru (in 100 kbit/sec increments) by sending SIGUSR1 (higher) or SIGUSR2 (lower). Nageru 1.6.1, July 9th, 2017 - Add native export of Prometheus metrics. - Rework the frame queue drop algorithm. The new one should handle tricky situations much better, especially when a card is drifting very slowly against the master timer. - Add Kaeru, an experimental transcoding tool based on Nageru code. Kaeru can run headless on a server without a GPU to transcode a Nageru stream into a lower-bitrate one, replacing VLC. - Work around a bug in some versions of NVIDIA's OpenGL drivers that would crash Nageru after about three hours (fix in cooperation with Movit). - Fix a crash with i965-va-driver 1.8.x. - Reduce mutex contention in certain critical places, causing lower tail latency in the mixer. Nageru 1.6.0, May 29th, 2017 - Add support for having videos (from file or from URL) as a separate input channels, albeit with some limitations. Apart from the obvious use of looping pause clips or similar, this can be used to integrate with CasparCG; see the manual for more details. - Add a frame analyzer (accessible from the Video menu) containing an RGB histogram and a color dropped tool. This is useful in calibrating video chains by playing back a known signal. Note that this adds a dependency on QCustomPlot. - Allow overriding Y'CbCr input interpretation, for inputs that don't use the correct settings. Also, Rec. 601 is now used by default instead of Rec. 709 for SD resolutions. - Support other sample rates than 48000 Hz from bmusb. Nageru 1.5.0, April 5th, 2017 - Support for low-latency HDMI/SDI output in addition to (or instead of) the stream. This currently only works with DeckLink cards, not bmusb. See the manual for more information. - Support changing the resolution from the command line, instead of locking everything to 1280x720. - The A/V sync code has been rewritten to be more in line with Fons Adriaensen's original paper. It handles several cases much better, in particular when trying to match 59.94 and 60 Hz sources to each other. However, it might occasionally need a few extra seconds on startup to lock properly if startup is slow. - Add support for using x264 for the disk recording. This makes it possible, among other things, to run Nageru on a machine entirely without VA-API support. - Support for 10-bit Y'CbCr, both on input and output. (Output requires x264 disk recording, as Quick Sync Video does not support 10-bit H.264.) This requires compute shader support, and is in general a little bit slower on input and output, due to the extra amount of data being shuffled around. Intermediate precision is 16-bit floating-point or better, as before. - Enable input mode autodetection for DeckLink cards that support it. (bmusb mode has always been autodetected.) - Add functionality to add a time code to the stream; useful for debugging latency. - The live display is now both more performant and of higher image quality. - Fix a long-standing issue where the preview displays would be too bright when using an NVIDIA GPU. (This did not affect the finished stream.) - Many other bugfixes and small improvements. Nageru 1.4.2, November 24th, 2016 - Fix a thread race that would sometimes cause x264 streaming to go awry. Nageru 1.4.1, November 6th, 2016 - Various bugfixes. Nageru 1.4.0, October 26th, 2016 - Support for multichannel (or more accurately, multi-bus) audio, choosable from the UI or using the --multichannel command-line flag. In multichannel mode, you can take in inputs from multiple different sources (or different channels on the same source, for multichannel sound cards), apply effects to them separately and then mix them together. This includes both audio from the video cards as well as ALSA inputs, including hotplug. Ola Gundelsby contributed invaluable feedback on this feature throughout the entire development cycle. - Support for having MIDI controllers control various aspects of the audio UI, with relatively flexible mapping. Note that different MIDI controllers can vary significantly in what protocol they speak, so Nageru will not necessarily work with all. (The primary testing controller has been the Akai MIDImix, and a pre-made mapping for that is included. The Korg nanoKONTROL2 has also been tested and works, but it requires some Korg-specific SysEx commands to make the buttons and lights work.) - Add a disk space indicator to the main window. - Various bugfixes. In particular, an issue where the audio would pitch up sharply after a series of many dropped frames has been fixed. Nageru 1.3.4, August 2nd, 2016 - Various bugfixes. Nageru 1.3.3, July 27th, 2016 - Various changes to make distribution packaging easier; in particular, theme data can be picked up from /usr/local/share/nageru. - Fix various FFmpeg deprecation warnings, now that we need FFmpeg 3.1 for other reasons anyway. Nageru 1.3.2, July 23rd, 2016 - Allow limited hotplugging (unplugging and replugging) of USB cards. You can use the new command-line option --num-fake-cards (-C) to add fake cards that show only a single color and that will be replaced by real cards as you plug them in; you can also unplug cards and have them be replaced by fake cards. Fake cards can also be used for testing Nageru without actually having any video cards available. - Add Metacube timestamping of every keyframe, for easier detection of streams not keeping up. Works with the new timestamp feature of Cubemap 1.3.1. Will be ignored (save for some logging) in older Cubemap versions. - The included default theme has been reworked and cleaned up to be more understandable and extensible. - Add more command-line options for initial audio setup. Nageru 1.3.1, July 1st, 2016 - Various display bugfixes. Nageru 1.3.0, June 26th, 2016 - It is now possible, given enough CPU power (e.g., a quad-core Haswell or faster desktop CPU), to output a stream that is suitable for streaming directly to end users without further transcoding. In particular, this includes support for encoding the network stream with x264 (the stream saved to disk is still done using Quick Sync), for Metacube framing (for streaming to the Cubemap reflector), and for choosing the network stream mux. For more information, see the README. - Add a flag (--disable-alsa-output) to disable ALSA monitoring output. - Do texture uploads from the main thread instead of from separate threads; may or may not improve stability with NVIDIA's proprietary drivers. - When beginning a new video segment, the shutdown of the old encoder is now done in a background thread, in order to not disturb the external stream. The audio still goes into a somewhat random stream, though. - You can now override the default stream-to-card mapping with --map-signal= on the command line. - Nageru now tries to lock itself into RAM if it has the permissions to do so, for better realtime behavior. (Writing the stream to disk tends to fill the buffer cache, eventually paging less-used parts of Nageru out.) - Various fixes for deadlocks, memory leaks, and many other errors. Nageru 1.2.1, April 15th, 2016 - Images are now updated from disk about every second, so that it is possible to update e.g. overlays during streaming, although somewhat slowly. - Fix support for PNG images. - You can now send SIGHUP to start a new cut instead of using the menu. - Added a --help option. - Various tweaks to OpenGL fence handling. Nageru 1.2.0, April 6th, 2016 - Support for Blackmagic's PCI and Thunderbolt cards, using the official (closed-source) Blackmagic drivers. (You do not need the SDK installed, though.) You can use PCI and USB cards pretty much interchangeably. - Much more stable handling of frame queues on non-master cards. In particular, you can have a master card on 50 Hz and another card on 60 Hz without getting lots of warning messages and a 10+ frame latency on the second card. - Many new options in the right click menu on cards: Adjustable video inputs, adjustable audio inputs, adjustable resolutions, ability to select card for master clock. - Add support for starting with almost all audio processing turned off (--flat-audio). - The UI now marks inputs with red or green to mark them as participating in the live or preview signal, respectively. Red takes priority. (Actually, it merely asks the theme for a color for each input; the theme contains the logic.) - Add support for uncompressed video instead of H.264 on the HTTP server, while still storing H.264 to files (--http-uncompressed-video). Note that depending on your client, this might not actually be more CPU efficient even on localhost, so be sure to check. - Add a simpler, less featureful theme (simple.lua) that should be easier to understand for beginners. Themes are now also choosable with -t on the command line. - Too many bugfixes and small tweaks to list. In particular, many memory leaks in the streaming part have been identified and fixed. Nageru 1.1.0, February 24th, 2016 - Support doing the H.264 encoding on a different graphics device from the one doing the mixing. In particular, this makes it possible to use Nageru on an NVIDIA GPU while still encoding H.264 video using Intel Quick Sync (NVENC is not supported yet) -- it is less efficient since the data needs to be read back via the CPU, but the NVIDIA cards and drivers are so much faster that it doesn't really matter. Tested on a GTX 950 with the proprietary drivers. - In the included example theme, fix fading to/from deinterlaced sources. - Various smaller compilation, distribution and documentation fixes. Nageru 1.0.0, January 30th, 2016 - Initial release.