Installation complexity
MythTV requires a full installation with a backend and frontend setup, a database, and multiple services. Tvheadend is simpler, running as a single service with a web-based configuration interface. Tvheadend is the faster option for users who want a working system without spending hours on initial setup.
Tuner support
Both support DVB-S, DVB-S2, DVB-T, and DVB-C through Linux DVB drivers. Tvheadend handles network tuner sources such as SAT>IP and HDHomeRun more gracefully. MythTV offers more advanced commercial detection and flagging during recording.
Recording capabilities
MythTV has deeper recording features, including automatic quality adjustments, commercial detection, and a sophisticated program scheduler. Tvheadend focuses on reliable capture and organization, leaving transcoding and commercial detection to external tools.
Network streaming
Both serve live TV and recordings over HTTP. Tvheadend integrates more easily with Kodi and other third-party players. MythTV requires its own frontend or MythWeb for remote access, which adds complexity.
Maintenance
MythTV requires periodic database maintenance, backend updates, and frontend synchronization. Tvheadend is more hands-off after initial configuration, with fewer moving parts to manage.
Which to choose
Choose Tvheadend for a quicker setup and easier network integration. Choose MythTV if you need advanced recording features, commercial detection, and are comfortable with a more involved maintenance routine.