DECYPHER

OPEN TO COLLABORATIONS // 05 UNITS // v2.3.1

UNITS / UNIT 01 / MNHR

DESKTOP MEDIA WORKBENCH

Media mastered in one app.

FIG.01Menhir with four docked players next to the Live TV and IPTV panel

OVERVIEW

CASE FILE MNHR

Menhir is a Windows-first media player and broadcast workbench written in C++20. It puts a media player, an audio mixer, a broadcast studio and a recorder in one window and keeps them in sync.

Every tool is a panel. You can split, stack and resize panels, keep as many open as the job needs, and save the arrangement as a layout for playback, TV, recording or studio work.

TYPE
Desktop media player and broadcast workbench
PLATFORM
Windows 10 / 11 · x64
LANGUAGE
C++20
STACK
SDL3 · Dear ImGui (docking) · FFmpeg · miniaudio · D3D11 / OpenGL · SQLite
SERVICES
Cloudflare Worker with D1 and Stripe for billing (TypeScript)
SIZE
≈64,000 lines of C++ across 25 source modules
VERSION
1.0.0

NINE SUBSYSTEMS

09 ENTRIES

  1. 00

    Playback

    Picture and sound kept in step, 10-bit HDR color, and a compatibility mode for older PCs.

    HDR10 · subtitles · lyrics · auto-skip · clip export

  2. 01

    Karaoke

    Synced lyrics rendered in time with the music, in their own dockable panel.

    synced lyrics · timed display

  3. 02

    Audio console

    One mixer for players, mics, system audio and network feeds, with EQ, effects, routing and per-input recording.

    routing · WASAPI loopback · EQ presets · soundboard

  4. 03

    Studio

    Scenes built from videos, cameras, browser pages, text and images, with a preview of the next scene and live transitions.

    cut · fade · stinger · NVIDIA Maxine · OBS bridge

  5. 04

    Docking

    Split, resize and stack panels into tabs, then save layouts for different kinds of work.

    dockable panels · saved layouts

  6. 05

    Record

    Shows, live channels, system audio and studio output, with scheduled recordings, instant replay and separate studio takes.

    DVR · replay buffer · TS / MKV / MP4

  7. 06

    Publish

    Go live to streaming platforms, or send video and music to TVs and speakers in the house.

    RTMP · SRT · WHIP · NDI · DLNA · Chromecast · AirPlay

  8. 07

    Live TV

    A multiview wall of channels, IPTV playlists and TV guide, pause and rewind live TV, and record any channel.

    M3U · XMLTV · timeshift · guide search

  9. 08

    Live streaming

    Multi-cam streamers in custom multiview panels, with live chat and emotes from every platform beside the players.

    Twitch · YouTube · Kick

SCREENS

04 CAPTURES

Four docked players next to the Live TV and IPTV panel
FIG.02Four docked players next to the Live TV and IPTV panel
HDR movie playback
FIG.03HDR movie playback
Karaoke panel with synced lyrics
FIG.04Karaoke panel with synced lyrics
Live streaming multiview with chat
FIG.05Live streaming multiview with chat

HOW IT'S BUILT

25 SOURCE MODULES

The C++ source is split into modules, each with its own README. Grouped by what they do:

PLAYBACK AND MEDIA 05

  • Core mediaPlayer, decoder, subtitles, lyrics, capture
  • RendererOpenGL / D3D11 frame upload
  • Audiominiaudio output, mixer buses, recording
  • LibrarySQLite media library and metadata
  • DevicesDirectShow devices and optical discs

BROADCAST 06

  • StudioScene document model
  • Stream publishingRTMP, SRT, WHIP, NDI targets
  • OBS bridgeOBS-compatible websocket control
  • CastingDLNA, Chromecast, AirPlay
  • ChatTwitch, Kick and YouTube chat
  • EffectsNVIDIA Maxine runtime

TV AND SHARING 02

  • TV / DVRIPTV, XMLTV, DVR, timeshift
  • SyncWatch Together host and relay

ACCOUNTS AND SERVICES 04

  • AccountsYouTube and Kick OAuth
  • Twitch accountDevice authorization
  • BillingSubscription state client
  • NetworkHTTP client and ranged file server

APPLICATION 08

  • App shellSDL / ImGui / D3D11 bootstrap, updater
  • UIDockable panels and layout state
  • SettingsJSON settings
  • PluginsManifests, registry, marketplace
  • InternationalizationUTF-8 JSON catalogs
  • SecurityCredential Manager and DPAPI
  • PrivacyText and URL redaction
  • UtilitiesLogging