Constants

`constants` ¶

Defines deterministic constants and built-in default values for the server

Configuration Split

Environment-dependent configuration is resolved lazily by mirumoji.server.config.get_settings so that a .env loaded at startup is respected

Attributes:

Name	Type	Description
`DB_URL`	`str`	Async SQLAlchemy database URL built from `HOST_DB_PATH`
`DEFAULT_SRT_SYS_MSG`	`str`	Built-in default system message for SRT-fixing
`DEFAULT_BREAKDOWN_SYS_MSG`	`str`	Built-in default system message for word-nuance breakdowns

FFmpeg encoder arguments used when converting video to MP4

A dictionary containing bundles of ffmpeg encoder arguments keyed by the name of a specific preset

Format

Each value is (speed, quality) for one encoder - libx264 -> (-preset, -crf) - h264_nvenc -> (-preset, -cq)

performance

Prioritises conversion speed over output quality
The fastest encoder presets paired with a lower quality target, for when throughput matters more than fidelity

balanced

Balances conversion speed with output quality
The default, with mid-range encoder presets and a moderate quality target that suits most playback

quality

Prioritises output quality
The slowest encoder presets paired with a higher quality target, for when fidelity matters more than encode time

resolution and target_bitrate options stay separate (output geometry and a rate ceiling), so a preset only trades encode speed against quality

The conversion preset used when a request does not specify one

Names a key of CONVERSION_PRESETS

Defines how many LLM requests should be executed simultaneously when requesting an SRT Fix for a batch of files

Base number of seconds for the exponential backoff between Whisper model download retries

How many times to attempt loading the local Whisper model before giving up

The first load pulls the weights from the Hugging Face Hub, so transient network failures are retried (the partial download resumes between attempts)