1
mirror of https://github.com/home-assistant/core synced 2024-08-02 23:40:32 +02:00
ha-core/homeassistant/components/stream/const.py
uvjustin 01a4a83bab
Improve stream playback on high latency cameras (#72547)
* Disable LL-HLS for HLS sources
* Add extra wait for Nest cameras
2022-06-17 01:48:52 +10:00

57 lines
2.0 KiB
Python

"""Constants for Stream component."""
DOMAIN = "stream"
ATTR_ENDPOINTS = "endpoints"
ATTR_SETTINGS = "settings"
ATTR_STREAMS = "streams"
HLS_PROVIDER = "hls"
RECORDER_PROVIDER = "recorder"
OUTPUT_FORMATS = [HLS_PROVIDER]
SEGMENT_CONTAINER_FORMAT = "mp4" # format for segments
RECORDER_CONTAINER_FORMAT = "mp4" # format for recorder output
AUDIO_CODECS = {"aac", "mp3"}
FORMAT_CONTENT_TYPE = {HLS_PROVIDER: "application/vnd.apple.mpegurl"}
OUTPUT_IDLE_TIMEOUT = 300 # Idle timeout due to inactivity
NUM_PLAYLIST_SEGMENTS = 3 # Number of segments to use in HLS playlist
MAX_SEGMENTS = 5 # Max number of segments to keep around
TARGET_SEGMENT_DURATION_NON_LL_HLS = 2.0 # Each segment is about this many seconds
SEGMENT_DURATION_ADJUSTER = 0.1 # Used to avoid missing keyframe boundaries
# Number of target durations to start before the end of the playlist.
# 1.5 should put us in the middle of the second to last segment even with
# variable keyframe intervals.
EXT_X_START_NON_LL_HLS = 1.5
# Number of part durations to start before the end of the playlist with LL-HLS
EXT_X_START_LL_HLS = 2
PACKETS_TO_WAIT_FOR_AUDIO = 20 # Some streams have an audio stream with no audio
MAX_TIMESTAMP_GAP = 10000 # seconds - anything from 10 to 50000 is probably reasonable
MAX_MISSING_DTS = 6 # Number of packets missing DTS to allow
SOURCE_TIMEOUT = 30 # Timeout for reading stream source
STREAM_RESTART_INCREMENT = 10 # Increase wait_timeout by this amount each retry
STREAM_RESTART_RESET_TIME = 300 # Reset wait_timeout after this many seconds
CONF_LL_HLS = "ll_hls"
CONF_PART_DURATION = "part_duration"
CONF_SEGMENT_DURATION = "segment_duration"
CONF_PREFER_TCP = "prefer_tcp"
CONF_RTSP_TRANSPORT = "rtsp_transport"
# The first dict entry below may be used as the default when populating options
RTSP_TRANSPORTS = {
"tcp": "TCP",
"udp": "UDP",
"udp_multicast": "UDP Multicast",
"http": "HTTP",
}
CONF_USE_WALLCLOCK_AS_TIMESTAMPS = "use_wallclock_as_timestamps"
CONF_EXTRA_PART_WAIT_TIME = "extra_part_wait_time"