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Reaper: Parallel rendering and multi-mono export

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Demo summary

The user demonstrates the new parallel post-processing options and the ability to render multi-channel files into separate mono files directly from the render dialogue.

Step-by-step

  1. Open the Render dialogue
  2. Select the tracks or regions to be rendered
  3. Enable 'Parallel render' to process multiple tracks simultaneously using multiple threads
  4. Select the post-processing option to render stereo or multi-channel files to per-channel mono files if separate files are required
  5. Enable 'Delay render start' if using parallel render with resource-heavy plugins to allow for effect initialization

Options

  • Render separate mono files from stereo, multi-channel, or multi-channel only sources
  • Toggle parallel post-processing on or off
  • Disable second pass render when normalizing video renders
  • Browse for a directory to initialize the default render path

Watch out for

  • Parallel render via master requires duplicating project effects invisibly, which can fail if the project is resource-constrained
  • Some plugins may render silence during parallel processing if they require long load times
  • Parallel rendering via master may actually take longer if plugins have significant loading delays

Tips

  • Enable 'Delay render start' to give effects time to load samples properly
  • Verify all files render as expected when using the 'Parallel render via master' option
  • Use parallel rendering primarily when rendering at the track level rather than through complex master track effects
  • Expect the most noticeable speed increases when rendering hundreds or thousands of files

Highlights

“it can now be done completely automated while rendering... so there's no post-processing manually that you would have to do.”

All demos from “What's New in REAPER 7.49-56 Updates - hi res spectrogram, tcp infoblock, faster renders and more”

  1. 13:572:32Open projects with effects offline and bring online sequentiallyThe narrator demonstrates the 'Choose projects to open' action, loading a project with effects offline and then using a new action to bring them online one by one.ReaperAI Video Editor
  2. 17:270:36Toggle track zoom ignoring pinned tracksA demonstration of the new zoom actions that resize tracks to minimum or default height while leaving pinned tracks unaffected.ReaperAI Video Editor
  3. 18:161:02AB comparison of fixed lanesThe user demonstrates a new action to toggle playback between the two most recently used lanes for quick AB comparison.ReaperAI Audio Editor
  4. 19:581:10Half-speed metronome and click sourceThe narrator demonstrates setting the metronome and click source items to 0.5 speed for halftime clicks.ReaperAI Audio Editor
  5. 21:313:18Crossfade Editor enhancementsA walkthrough of new Crossfade Editor features including in-bounds/out-of-bounds previewing, independent pre/post-roll dragging, and ruler scrubbing.ReaperAI Audio Editor
  6. 25:511:47Preserve FX pin mappings when loading presetsThe user demonstrates the new preference to keep existing pin connector mappings even when switching between different plugin presets.ReaperAI Audio Editor
  7. 27:401:20Alias Wet/Dry and Bypass parametersThe narrator demonstrates renaming the native Wet/Dry and Bypass controls for a plugin so they appear with custom names in track controls and envelopes.ReaperAI Audio Editor
  8. 30:143:40Recursive directory import and folder creationThe user demonstrates importing an entire directory of files, showing how REAPER can recursively scan subfolders and automatically create folder tracks.ReaperAI Audio Editor
  9. 33:542:58Media Explorer preview fade settingsThe narrator demonstrates configuring and toggling fade-in/fade-out settings for audio previews within the Media Explorer.ReaperAI Audio Editor
  10. 36:524:51High-resolution spectrogram and spectral editingA detailed demo of the new high-res spectrogram view and various spectral editing improvements, including gain adjustments and multi-selecting edits.ReaperAI Audio Editor
  11. 41:431:02Spectral edit default preferencesThe user demonstrates the new preferences page for setting default fades, gain, and FFT size for all new spectral edits.ReaperAI Audio Editor
  12. 50:144:12Parallel rendering and multi-mono exportCurrentThe user demonstrates the new parallel post-processing options and the ability to render multi-channel files into separate mono files directly from the render dialogue.ReaperAI Audio Editor
  13. Watch “What's New in REAPER 7.49-56 Updates - hi res spectrogram, tcp infoblock, faster renders and more” →

AI Audio Editor

  1. 6:003:32Non-destructive sample editing in REAPERThe presenter demonstrates the new 'Take sample edits' feature, zooming in to manually redraw individual sample points with a pencil tool to fix audio glitches.The REAPER Blog
  2. 10:491:43Removing audio clicks with sample editingA practical demonstration of using the sample edit tool to silence a sharp click in a noise recording by dragging sample values to zero.The REAPER Blog
  3. 14:021:12Scaling peak display zoom with actionsThe presenter demonstrates new actions to instantly double or halve the visual peak display zoom in the project timeline.The REAPER Blog
  4. 21:351:01Delete unsynced comp areas in Fixed LanesThe presenter shows how to use the new action to clean up orphaned or unsynced comping areas in REAPER's fixed lane tracks.The REAPER Blog
  5. 23:051:20Limit floating plugin windowsThe video demonstrates the new preference to allow only one floating effects window at a time, showing how opening a new plugin automatically hides the previous one.The REAPER Blog
  6. 7:411:46Advanced crossfade editing and phase alignmentA demo of the new REAPER 7 crossfade editor, showing how to adjust fade shapes, move crossfades with modifiers, and use the phase align button to match waveforms.Reapertips | Alejandro
  7. 9:450:57Apply low pass fades to media itemsThe user demonstrates right-clicking a fade to select 'low pass fade', which applies a frequency filter sweep alongside the volume change, and shows how to cycle shapes using Control/Command.Reapertips | Alejandro
  8. 10:421:34Using the enhanced Render dialog in REAPERThe creator demonstrates the new render features, including playing back rendered files directly from the dialog, viewing loudness indicators, and using 'dry run' to find clipping points with markers.Reapertips | Alejandro
  9. 5:230:49Adding a Pultec EQ to the custom toolbarA second demonstration of adding a specific plugin (UAD Pultec EQP1A) to the custom EQ toolbar using the shortcut and icon customization process.Dawn Shift Audio
  10. 6:270:54Managing effects and plugin chains in ReaperA walkthrough of adding stock plugins like a compressor and EQ to a track in Reaper, including how to bypass individual plugins or the entire effect chain using the UI overlays.Andrew Barr
  11. 5:270:44Applying reverb effects in ReaperMike opens the track effects window in Reaper to add the ReaVerb plugin and applies a 'bad crunch' preset to his vocal track.Mike Russell
  12. 18:161:02AB comparison of fixed lanesThe user demonstrates a new action to toggle playback between the two most recently used lanes for quick AB comparison.The REAPER Blog
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