Reaper is a complex audio program, offering all the tools you need in order to record, edit, process and mix your favorite tracks. It supports a wide range of formats and plugins and can be extended, scripted and modified.
The program has three major functions: record, produce and transform. With the record function, you can record audio and MIDI at any sample rate or bit depth. Also, it has various speeds for recording and playback with multiple takes or layers. Producing allows you to freely mix audio, MIDI, and video on any track. Moreover, you can copy and move regions to alternate arrangements while having up to 64 individually routable channels. Going further, the transform function has the option to install any third-party audio or MIDI plugin(VST, VST3, DX/DXI) and allows FX enabling in real time.
Reaper is extremely customizable. You can change colors, icons, toolbars, layouts, almost anything. Thousands of actions, alone or in sequence, can be triggered by a keystroke, toolbar button, or external controller. It's also extensible, the user is offered the possibility to develop extension in Lua, EEL, or Python.
The 5.62 version comes with major improvements. The most notable is the accessibility support, the correct grouping of items after moving within time selection and the option to add FX to master track.
To sum it up, Reaper is a complete tool for audio editing offering all the means for professional and intuitive DJing, combining top mixing and performance features.
v5.211 [Mar 25, 2016]
Big Clock
support image (including animated .gif) backgrounds for visual click mode
Render
allow relative output directories, improve handling of blank render path
display render-complete notification on macOS 10.8
improve recent render path menu
include tail setting in output presets
Timecode
add option for incoming MTC to be treated as 23.976ND/29.97ND vs 24/30fps
improve display of LTC/MTC start offset in ND modes
support sending 23.976ND/29.97ND as 24/30fps MTC
relocate cursor in response to MMC goto/locate timecode command
Notation editor
MusicXML import
support custom stem/beam direction .
support pedal notation in MusicXML export
Super8
add x-fade shortened loop action
improved auto fades when recording
improved sample length control behavior (shift for fine adjustment)
macOS
change various OS X instances to macOS
include edit menu for modal windows such as file open/save
fix possible incorrect timing of incoming IACbus MIDI events
remove option for VST unloading
restored 5.1x and previous behavior for separate default audio input/output devices .
fix -renderproject command line option .
use resource path of command line -cfgfile specified .ini file specified (matching Windows behavior)
ReaSurround
brighten grid/influence lines
improve parameter names
improved pan gain behavior, deprecated old behavior with 'Normalize multichannel gain' checkbox
increase zoom range, Z-axis scaling
prevent context menu appearing when using marquee selection
fix UI issue when displaying high speaker banks .
correct speaker influence field display height
Automation
add actions to clear latch for all/selected tracks .
fix issues with write automation to time selection and zero transition time .
ignore latch reset on looped playback option in latch preview mode
optimize moving envelopes across tracks for large projects
do not reset send envelope panel size on undo/redo .
Command line
improve command line help, add macOS support for -h .
improve handling of -cfgfile without paths, use default appdata path if non-portable install
MIDI editor
add default toolbar button for step sequencing
fix 14-bit midi CC lane-presence indications .
update internal state immediately on various API calls .
Parameter modulation
fix application of parameter modulation when LFO/ACS enabled but with 0% strength
fix issue when manually entering LFO speed .
fix support for video processor parameter ranges
ReaComp
allow more than -150dB of gain reduction .
improve GR meter behavior with large block sizes .
ReaScript
allow Lua to access unknown reaper.* and gfx.* variables/functions .
fix potential memory leak when calling Lua APIs with incorrect syntax
Theme
add latch preview toolbar icon, update other automation mode toolbar icons
allow WALTER layouts to position overlapping track index and bus-related buttons, if they desire
Video
improve .gif preserve-transparency mode .
auto-crossfade images by default (requires use of video processor preset for actual fades)
Accessibility
improve behavior with MIDI editor and media explorer buttons
Actions
"Move position of item to edit cursor" respects item snap offset .
Auto-save
allow relative project auto-save paths
Mixer
improve cursor feedback when ctrl dragging sends .
Open item copy in editor
ignore limit-to-realtime preference .
Project settings
improve layout, fix samplerate label .
Regions
when copying regions, create new media item groups if necessary .
REX
fix potentially incorrect item group creation
Snap
more predictable behavior when snapping to non-grid points .
Stretch markers
fix incorrect hit testing in inactive take lanes
Time map
fix behavior editing tempo marker which transitions to time signature marker .
API
added APIExists() function, to test if a given API function exists
