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Added

Slicer release 22022301

March 4th, 2022

Fixes:

  • Fix CameraSlicer startup race condition.

  • Fix unreadable CameraSlicer UI in Dark mode (opt-out Slicer and CameraSlicer app from Dark mode).

  • Fix automatic gain adjustment of Dolby subtracks in VOD slicer.

  • Fix TTML-to-CC conversion when TTML contains non-Latin text.

  • Fix an issue where a slice was always truncated by up to 0.128s due to a short audio track.

  • Fix VOD slicer ingest of assets where some audio tracks are short.

  • Fix slicebot errors on CentOS 7.

  • Fix slicer log spam due to UL_EXPECT failures.

  • Fix video-only VOD ingest regression that was introduced in 21102800-master slicer release.

Enables:

  • Signal record/replay functionality for AJA liveslicer.

  • New prefetch_pod APIs for Ad prefetch workflows.

  • Optional target_loudness slicer config and command line parameter.

  • Optional dynamic gain adjustment via either -enable_loudnorm parameter (adds 3s latency, computationally expensive), or -enable_dyn_gain which adds 100ms latency and uses ebur128 output loudness measurements and incremental gain changes to reach -target_loudness.

  • Support for non-standard number of audio channels (up to 30).

Other changes:

  • Make render_608 buffer match the slice duration, by default.

  • Update signal record/replay functionality for BlackMagic, CDI, and UDP liveslicer (trailing_capture only), add support for overlapping captures, make output file path configurable.

  • Reimplement gain adjustment.

  • Change x264 encoder timebase to match target framerate.

  • Include Advanced Audio Routing settings (-mix ... -mix end) during VOD slicer analysis pass.

Prerequisites:

  • Due to the slicer being built on CentOS 7 it picks up a new library dependency on libnl-3.200, which is not included in the base install of Ubuntu 18.04. You may need to pre-install it: sudo apt install libnl-3-200

  • Nvidia driver 418 or later is required for HEVC 4K HDR/SDR.

  • Due to CentOS 6 reaching EOL in November 2020 this slicer release requires CentOS 7 or newer.