1 Nageru and Futatabi 1.9.3, April 12th, 2020
3 - Support (video-only) V4L2 output. The intended use case is output into
4 v4l2loopback to get into videoconferencing or the likes:
6 sudo apt install v4l2loopback-dkms
7 sudo modprobe v4l2loopback video_nr=2 card_label='Nageru loopback' max_width=1280 max_height=720 exclusive_caps=1
8 nageru --v4l-output /dev/video2
10 Start Nageru before any readers.
13 Nageru and Futatabi 1.9.2, March 29th, 2020
15 - Support handling white balance directly in Nageru, without themes
16 manually inserting a WhiteBalanceEffect or handling set_wb().
17 To use it, call scene:add_white_balance() instead of
18 scene:add_effect(WhiteBalanceEffect.new()). If using this functionality,
19 white balance will be properly propagated to the MJPEG feed and
20 through Futatabi, so that replays get the correct white balance.
21 Futatabi's UI will still be uncorrected, though.
23 - Make it possible to siphon out a single MJPEG stream, for remote
24 debugging, single-camera recording, single-camera streaming via
25 Kaeru or probably other things. The URL for this is /feeds/N.mp4
26 where N is the card index (starting from zero).
28 - The theme can now access some audio settings; it can get (not set)
29 number of buses and names, get/set fader volume, get/set mute,
30 and get/set EQ parameters.
32 - In Futatabi, it is now possible to set custom source labels, with
33 the parameter --source-label NUM:LABEL (or -l NUM:LABEL).
35 - When the playback speed changes in Futatabi, ease into the new speed.
36 The easing period is nominally 200 ms, but it will be automatically
37 shortened or lengthened (up to as much as two seconds in extreme
38 cases, especially involving very slight speed change) if this
39 helps getting back into a cadence of hitting the original frames.
40 This can mean significant performance improvements when ramping
41 from higher speeds back into 100%.
43 - Updates for newer versions of CEF (tested with Chrome 80).
45 - Various bugfixes and performance improvements.
48 Nageru and Futatabi 1.9.1, November 17th, 2019
50 - Support disabling optional effects if a given other effect is _enabled_
51 (typically for mutually exclusive effects).
53 - Make it possible for the theme to override the status line, by declaring
54 a function format_status_line() in the theme. Inspired by a C++ patch by
55 Alex Thomazo in the Breizhcamp repository.
60 Nageru and Futatabi 1.9.0, July 20th, 2019
62 - Significant reworking of the theme engine: Chains (now called scenes)
63 can now instantiate different versions behind-the-scenes instead of the
64 user having to worry about input types, low/high quality, or replacing
65 effects with others. Menus can have submenus and checkboxes. Finally, some
66 callbacks, such as num_channels(), have been replaced with easier-to-use
67 imperative functions, ie., an explicit call to Nageru.set_num_channels(N).
69 See the documentation for more information, or the included themes,
70 which have been ported to the new interfaces. Existing themes will continue
71 to run without modification, but the old interfaces are deprecated.
73 Martin Sandsmark contributed a bugfix to this work.
75 - Support cross-compilation. Patch from Helmut Grohne.
77 - Kaeru now has a parameter --disable-audio for transcoding streams
80 - Various bugfixes. In particular, work around an issue where Mesa's shader
81 cache interacts with Qt's EGL support to create a confusing crash with
82 “vertex shader lacks `main'”.
85 Nageru and Futatabi 1.8.6, April 19th, 2019
87 - Filenames for the recordings are now without colons; it caused
88 too much problems with various software, including most players.
93 Nageru and Futatabi 1.8.5, March 30th, 2019
95 - Experimental support for audio in Futatabi: The MJPEG export from
96 Nageru now supports audio, and Futatabi will store it and play it
97 back. Audio is currently only supported when playing at 100% speed
98 (no pitch shift or time stretching), and there is no audio output
99 to the Futatabi operator.
101 - Significant optimizations to MJPEG encoding, both when in use and when
107 Nageru and Futatabi 1.8.4, March 11th, 2019
109 - Various bugfixes, in particular for 32-bit platforms.
112 Nageru and Futatabi 1.8.3, March 10th, 2019
114 - Allow controlling video mixing from MIDI events. Adapted from a patch
115 by Yann Dubreuil, from the BreizhCamp repository.
117 - Use ALSA hardware timestamps for input; gives more stable delay.
118 Patch by Yann Dubreuil, from the BreizhCamp repository.
120 - For FFmpeg inputs, add an option for playing as fast as possible
123 - In Futatabi, support queueing and playing clips with no cue-out point.
124 This opens up for new and even faster UI workflows.
129 Nageru and Futatabi 1.8.2, January 19th, 2019
131 - Futatabi now supports MIDI controllers like Nageru, including an editor
132 and a sample mapping for the Behringer CMD PL-1.
134 - Futatabi now supports changing master speed during play, both via a
135 MIDI controller and the GUI.
140 Nageru and Futatabi 1.8.1, December 30th, 2018
142 - Futatabi can now communicate its queue status through a subtitle track,
143 and Nageru can consume it. This allows Nageru themes to get precise
144 information programmatically, e.g. to show status or automatically
145 switch away when the queue is about to end.
147 - Futatabi can now reuse the computed flow across successive frames when
148 interpolating between the same frame pair. This significantly reduces
149 the GPU load when doing super-slow motion (slower than 0.5x).
151 - Various smaller fixes.
154 Nageru and Futatabi 1.8.0, December 20th, 2018
156 - Initial release of Futatabi, a multicamera slow motion video server
157 designed to be used with Nageru. Futatabi is currently in alpha stage
158 and largely undocumented.
160 - Add support for multi-camera export from Nageru. A multi-camera stream
161 contains all frames from all camera inputs (unless overridden by
162 --mjpeg-export-cards), unprocessed except for MJPEG encoding.
163 MJPEG encoding is done in hardware (via VA-API) on Skylake or newer,
164 or using libjpeg otherwise. The intended user of this stream is Futatabi.
167 Nageru 1.7.5, November 11th, 2018
169 - Fix a bug where --record-x264-video would not work when VA-API was
170 not present, making the option rather useless (broken in 1.7.2).
171 Bug reported by Peter De Schrijver.
173 - The build system has been switched to Meson; see the README for new
176 - Various smaller fixes.
179 Nageru 1.7.4, August 31st, 2018
181 - Rework the x264 speedcontrol presets, again. (They earlier assumed
182 we could control B-frame settings on the fly, which we cannot with
183 threaded lookahead.) Also support x264 >= 153, which can support
184 multiple bit depths in the same library.
186 - Default to SDI inputs instead of HDMI.
188 - Add a mode to run in full screen (--fullscreen). Adapted from a patch
191 - Add support for lift/gamma/gain in the theme. Patch by Alexandre Thomazo.
194 Nageru 1.7.3, May 22nd, 2018
196 - When using multichannel audio, add a control for adjusting the
197 stereo width (from normal stereo to mono, all the way to
200 - Removed --http-coarse-timebase (it is now always on).
205 Nageru 1.7.2, April 28th, 2018
207 - Several improvements to video (FFmpeg) inputs: You can now use
208 them as audio sources, you can right-click on video channels
209 to change URL/filename on-the-fly, themes can ask for forced
210 disconnection (useful for network sources that are hanging),
211 and various other improvements. Be aware that the audio support
212 may still be somewhat rough, as A/V sync of arbitrary video
213 playout is a hard problem.
215 - The included themes have been fixed to properly make the returned
216 chain preparation functions independent of global state (e.g. if
217 the white balance for a channel was changed before the frame was
218 actually rendered). If you are using a custom theme, you may want
219 to apply similar fixes to it.
221 - In Metacube stream output, mark each keyframe with a pts metadata
222 block. This allows Cubemap 1.4.0 or newer to serve fMP4 fragments
223 for HLS from Nageru's output, without any further remuxing or
226 - If needed, Nageru will now automatically try to autodetect a
227 usable --va-display parameter by probing all DRM nodes for H.264
228 encoders. This removes the need to set --va-display in almost all
229 cases, and also removes the dependency on libpci.
231 - For GPUs that support querying available memory (in practice only
232 NVIDIA GPUs at the current time), expose the amount of used/total
233 GPU memory both on standard output and in the Prometheus metrics
234 (as well as included Grafana dashboard).
236 - The Grafana dashboard now supports heatmaps for the chosen x264
237 speedcontrol preset (requires Grafana 5.1 or newer). (There used to
238 be a heatmap earlier, but it was all broken.)
243 Nageru 1.7.1, March 26th, 2018
245 - Various bugfixes, mostly related to HTML and video inputs.
248 Nageru 1.7.0, March 8th, 2018
250 - Support for HTML5 graphics directly in Nageru, through CEF
251 (Chromium Embedded Framework). This performs better and is more
252 flexible than integrating with CasparCG over a socket. Note that
253 CEF is an optional component; see the documentation for more
256 - Add an HTTP endpoint for enumerating channels and one for getting
257 only their colors. Intended for remote tally applications;
258 set the documentation.
260 - Add a video grid display that removes the audio controls and shows
261 the video channels only, potentially in multiple rows if that makes
262 for a larger viewing area.
264 - Themes can now present simple menus in the Nageru UI. See the
265 documentation for more information.
270 Nageru 1.6.4, January 25th, 2018
272 - Fix compilation with the upcoming FFmpeg 3.5.
274 - Switch to LuaJIT for the theme engine, which is faster.
276 - Various bugfixes and smaller optimizations.
279 Nageru 1.6.3, November 8th, 2017
281 - Add quick-cut keys (Q, W, E, etc.) below the preview keys.
282 Since it's easy to hit these by accident and put up a signal
283 you didn't want, they are disabled by default (they can be
284 enabled in the video menu, or with the command line flag
287 - Rework the x264 speedcontrol presets to better match newer
290 - Add an option for changing the HTTP port (--http-port).
292 - Various smaller bug and integration fixes.
295 Nageru 1.6.2, July 16th, 2017
297 - Various smaller Kaeru fixes, mostly around metrics. Also,
298 you can now adjust the x264 bitrate in Kaeru (in 100 kbit/sec
299 increments) by sending SIGUSR1 (higher) or SIGUSR2 (lower).
302 Nageru 1.6.1, July 9th, 2017
304 - Add native export of Prometheus metrics.
306 - Rework the frame queue drop algorithm. The new one should handle tricky
307 situations much better, especially when a card is drifting very slowly
308 against the master timer.
310 - Add Kaeru, an experimental transcoding tool based on Nageru code.
311 Kaeru can run headless on a server without a GPU to transcode a
312 Nageru stream into a lower-bitrate one, replacing VLC.
314 - Work around a bug in some versions of NVIDIA's OpenGL drivers that would
315 crash Nageru after about three hours (fix in cooperation with Movit).
317 - Fix a crash with i965-va-driver 1.8.x.
319 - Reduce mutex contention in certain critical places, causing lower tail
320 latency in the mixer.
323 Nageru 1.6.0, May 29th, 2017
325 - Add support for having videos (from file or from URL) as a separate
326 input channels, albeit with some limitations. Apart from the obvious use of
327 looping pause clips or similar, this can be used to integrate with CasparCG;
328 see the manual for more details.
330 - Add a frame analyzer (accessible from the Video menu) containing an
331 RGB histogram and a color dropped tool. This is useful in calibrating
332 video chains by playing back a known signal. Note that this adds a
333 dependency on QCustomPlot.
335 - Allow overriding Y'CbCr input interpretation, for inputs that don't
336 use the correct settings. Also, Rec. 601 is now used by default instead
337 of Rec. 709 for SD resolutions.
339 - Support other sample rates than 48000 Hz from bmusb.
342 Nageru 1.5.0, April 5th, 2017
344 - Support for low-latency HDMI/SDI output in addition to (or instead of) the
345 stream. This currently only works with DeckLink cards, not bmusb. See the
346 manual for more information.
348 - Support changing the resolution from the command line, instead of locking
349 everything to 1280x720.
351 - The A/V sync code has been rewritten to be more in line with Fons
352 Adriaensen's original paper. It handles several cases much better,
353 in particular when trying to match 59.94 and 60 Hz sources to each other.
354 However, it might occasionally need a few extra seconds on startup to
355 lock properly if startup is slow.
357 - Add support for using x264 for the disk recording. This makes it possible,
358 among other things, to run Nageru on a machine entirely without VA-API
361 - Support for 10-bit Y'CbCr, both on input and output. (Output requires
362 x264 disk recording, as Quick Sync Video does not support 10-bit H.264.)
363 This requires compute shader support, and is in general a little bit
364 slower on input and output, due to the extra amount of data being shuffled
365 around. Intermediate precision is 16-bit floating-point or better,
368 - Enable input mode autodetection for DeckLink cards that support it.
369 (bmusb mode has always been autodetected.)
371 - Add functionality to add a time code to the stream; useful for debugging
374 - The live display is now both more performant and of higher image quality.
376 - Fix a long-standing issue where the preview displays would be too bright
377 when using an NVIDIA GPU. (This did not affect the finished stream.)
379 - Many other bugfixes and small improvements.
382 Nageru 1.4.2, November 24th, 2016
384 - Fix a thread race that would sometimes cause x264 streaming to go awry.
387 Nageru 1.4.1, November 6th, 2016
392 Nageru 1.4.0, October 26th, 2016
394 - Support for multichannel (or more accurately, multi-bus) audio,
395 choosable from the UI or using the --multichannel command-line
396 flag. In multichannel mode, you can take in inputs from multiple
397 different sources (or different channels on the same source, for
398 multichannel sound cards), apply effects to them separately and then
399 mix them together. This includes both audio from the video cards
400 as well as ALSA inputs, including hotplug. Ola Gundelsby contributed
401 invaluable feedback on this feature throughout the entire
404 - Support for having MIDI controllers control various aspects of the
405 audio UI, with relatively flexible mapping. Note that different
406 MIDI controllers can vary significantly in what protocol they speak,
407 so Nageru will not necessarily work with all. (The primary testing
408 controller has been the Akai MIDImix, and a pre-made mapping for
409 that is included. The Korg nanoKONTROL2 has also been tested and
410 works, but it requires some Korg-specific SysEx commands to make
411 the buttons and lights work.)
413 - Add a disk space indicator to the main window.
415 - Various bugfixes. In particular, an issue where the audio would pitch
416 up sharply after a series of many dropped frames has been fixed.
419 Nageru 1.3.4, August 2nd, 2016
424 Nageru 1.3.3, July 27th, 2016
426 - Various changes to make distribution packaging easier; in particular,
427 theme data can be picked up from /usr/local/share/nageru.
429 - Fix various FFmpeg deprecation warnings, now that we need FFmpeg
430 3.1 for other reasons anyway.
433 Nageru 1.3.2, July 23rd, 2016
435 - Allow limited hotplugging (unplugging and replugging) of USB cards.
436 You can use the new command-line option --num-fake-cards (-C) to add
437 fake cards that show only a single color and that will be replaced
438 by real cards as you plug them in; you can also unplug cards and have
439 them be replaced by fake cards. Fake cards can also be used for testing
440 Nageru without actually having any video cards available.
442 - Add Metacube timestamping of every keyframe, for easier detection of
443 streams not keeping up. Works with the new timestamp feature of
444 Cubemap 1.3.1. Will be ignored (save for some logging) in older
447 - The included default theme has been reworked and cleaned up to be
448 more understandable and extensible.
450 - Add more command-line options for initial audio setup.
453 Nageru 1.3.1, July 1st, 2016
455 - Various display bugfixes.
458 Nageru 1.3.0, June 26th, 2016
460 - It is now possible, given enough CPU power (e.g., a quad-core Haswell or
461 faster desktop CPU), to output a stream that is suitable for streaming
462 directly to end users without further transcoding. In particular, this
463 includes support for encoding the network stream with x264 (the stream
464 saved to disk is still done using Quick Sync), for Metacube framing (for
465 streaming to the Cubemap reflector), and for choosing the network stream
466 mux. For more information, see the README.
468 - Add a flag (--disable-alsa-output) to disable ALSA monitoring output.
470 - Do texture uploads from the main thread instead of from separate threads;
471 may or may not improve stability with NVIDIA's proprietary drivers.
473 - When beginning a new video segment, the shutdown of the old encoder
474 is now done in a background thread, in order to not disturb the external
475 stream. The audio still goes into a somewhat random stream, though.
477 - You can now override the default stream-to-card mapping with --map-signal=
480 - Nageru now tries to lock itself into RAM if it has the permissions to do
481 so, for better realtime behavior. (Writing the stream to disk tends to
482 fill the buffer cache, eventually paging less-used parts of Nageru out.)
484 - Various fixes for deadlocks, memory leaks, and many other errors.
487 Nageru 1.2.1, April 15th, 2016
489 - Images are now updated from disk about every second, so that it is possible
490 to update e.g. overlays during streaming, although somewhat slowly.
492 - Fix support for PNG images.
494 - You can now send SIGHUP to start a new cut instead of using the menu.
496 - Added a --help option.
498 - Various tweaks to OpenGL fence handling.
501 Nageru 1.2.0, April 6th, 2016
503 - Support for Blackmagic's PCI and Thunderbolt cards, using the official
504 (closed-source) Blackmagic drivers. (You do not need the SDK installed, though.)
505 You can use PCI and USB cards pretty much interchangeably.
507 - Much more stable handling of frame queues on non-master cards. In particular,
508 you can have a master card on 50 Hz and another card on 60 Hz without getting
509 lots of warning messages and a 10+ frame latency on the second card.
511 - Many new options in the right click menu on cards: Adjustable video inputs,
512 adjustable audio inputs, adjustable resolutions, ability to select card for
515 - Add support for starting with almost all audio processing turned off
518 - The UI now marks inputs with red or green to mark them as participating in
519 the live or preview signal, respectively. Red takes priority. (Actually,
520 it merely asks the theme for a color for each input; the theme contains
523 - Add support for uncompressed video instead of H.264 on the HTTP server,
524 while still storing H.264 to files (--http-uncompressed-video). Note that
525 depending on your client, this might not actually be more CPU efficient
526 even on localhost, so be sure to check.
528 - Add a simpler, less featureful theme (simple.lua) that should be easier to
529 understand for beginners. Themes are now also choosable with -t on the command
532 - Too many bugfixes and small tweaks to list. In particular, many memory leaks
533 in the streaming part have been identified and fixed.
536 Nageru 1.1.0, February 24th, 2016
538 - Support doing the H.264 encoding on a different graphics device from the one
539 doing the mixing. In particular, this makes it possible to use Nageru on an
540 NVIDIA GPU while still encoding H.264 video using Intel Quick Sync (NVENC
541 is not supported yet) -- it is less efficient since the data needs to be read
542 back via the CPU, but the NVIDIA cards and drivers are so much faster that it
543 doesn't really matter. Tested on a GTX 950 with the proprietary drivers.
545 - In the included example theme, fix fading to/from deinterlaced sources.
547 - Various smaller compilation, distribution and documentation fixes.
550 Nageru 1.0.0, January 30th, 2016