Showout

Released 2026-10-18

Showout 1.1.0

Linux x86_64 AppImage.

New

  • Library works while output is live: browse to another folder and use Play on Layer. A clip banked while output is live gets its thumbnail after output stops. Locate Missing Media, relink and Prepare still need output stopped.
  • Save Template and Save As work while output is live. Quitting waits for a save in progress. Opening a template still needs output stopped.
  • AV1 clips play, thumbnail and Prepare. Hardware decoding where the GPU supports AV1.
  • Hardware-decoded H.265 and AV1 stay on the GPU on supported AMD graphics, like H.264. Includes 10-bit HDR and MKV/WebM files. H.264 from MKV too.
  • Phone HDR video (HLG and HDR10) shows correct colour, converted to SDR for playback, thumbnails and Prepare.
  • Phone photos display upright.
  • Hap HDR (HapH) clips play when tagged HLG or HDR10.
  • Black-level pattern on the Calibration tab of Output Setup, for setting the display's range.

Fixed

  • Keys, file drops and focus changes could be lost after the app stalled.
  • Losing the output display could move output onto another screen. Output now hides, returns after a brief display blink, and closes if the display stays gone.
  • Output could miss its display after a replug that renamed the display.
  • 4K hardware-decoded clips could drop frames.
  • Prepare was offered for still images.
  • A clip launch or scene switch queued for the next beat or bar could fire between beats after an OSC /beat or a Tap tempo tap.
  • Launches queued before a Tap or Set BPM tempo change kept the old timing.
  • With Clip fade on, launching another clip before the previous launch had shown a frame blanked the layer instead of holding the old image.
  • With Clip fade on, launching a clip during a fade jumped to one of the two fading clips before fading to the new one.
  • A crafted MKV or WebM in a browsed folder could trigger an out-of-bounds read in GStreamer (GStreamer-SA-2026-0089).

Included components

  • GStreamer 1.28.8, FFmpeg 8.1.3 (LGPL), dav1d 1.5.4, GLib 2.86.0, Snappy 1.2.2.
  • Requires glibc 2.36 or newer (Debian 12).

Known limitations

  • Hardware decoding tested only with VA-API on AMD. NVDEC and V4L2 untested.
  • Keeping frames on the GPU is qualified only on a Radeon 780M.
  • HDR video plays in SDR with compressed highlights. Tested with Pixel 10 HLG at 4K30.
  • No camera input.

See Getting Started to install Showout and set up a first show.