Fire TV Family All Sub Convert Audio Conform Pack¶

This pack provides shared Fire TV HD and 4K lanes with explicit subtitle/audio delivery behavior.

Outcome Target¶

target Fire TV family playback envelopes directly
use H.264 for HD delivery and HEVC for 4K delivery
keep all subtitles visible in policy terms, but convert text subtitles when MP4-safe delivery is available

Focus¶

Fire TV family-specific output envelopes
fragmented MP4 preferred, MKV fallback when subtitle/audio safety requires it
audio_conform for DTS-family and PCM-family sources
optional video-only aggressive_vmaf

Covered Device Baselines¶

Profile	Current device baseline	Notes
`fire_tv_family_hd_all_sub_convert_audio_conform`	Fire TV Stick Lite	Conservative HD Fire TV baseline
`fire_tv_family_4k_all_sub_convert_audio_conform`	Fire TV Stick 4K and Fire TV Stick 4K Max	Shared conservative UHD baseline; no AV1-specialized path yet

This pack is family-scoped, but the baselines inside it are still device-driven. If Fire TV 4K Max or a later Fire TV line needs a materially different spec, it should get its own profile or pack.

Included Profiles¶

Pack Flow¶

flowchart TD classDef stage fill:#e0f2fe,stroke:#0284c7,color:#0c4a6e,stroke-width:1.2px; classDef gate fill:#fff7ed,stroke:#f59e0b,color:#7c2d12,stroke-width:1.5px; classDef output fill:#dcfce7,stroke:#16a34a,color:#14532d,stroke-width:1.2px; A[Candidate media]:::stage --> B{Matches Fire TV HD envelope?}:::gate B -->|Yes| C[fire_tv_family_hd_all_sub_convert_audio_conform]:::stage B -->|No| D{Matches Fire TV 4K envelope?}:::gate D -->|Yes| E[fire_tv_family_4k_all_sub_convert_audio_conform]:::stage D -->|No| F[Handled by other profile or skipped]:::stage C --> G[Profile output written]:::output E --> H[Profile output written]:::output