FormatMetadata

One format as YouTube lists it, under YouTube’s field names, plus fields ytdl-core derives. A field YouTube omits is absent; numeric strings are numbers.

Extended by

• VideoFormat

Properties

Property	Type	Description
appliedDrcTargetCenterForBackgroundDb?	number	-
appliedVocalsGainFactor?	number	-
approxDurationMs?	number	-
audioBitrate	number | undefined	Kbps, for formats with audio.
audioChannels?	number	-
audioCodec	string | undefined	-
audioQuality?	string	-
audioSampleRate?	number	-
audioTrack?	AudioTrack	-
averageBitrate?	number	-
bitrate?	number	-
captionTrack?	FormatCaptionTrack	-
client	Client	The client that served this format; resume asks it first.
codecs	string	-
colorInfo?	ColorInfo	-
container	string	mp4, webm, ts and so on.
contentLength?	number	-
drmFamilies?	readonly string[]	-
fps?	number	-
hasAudio	boolean	-
hasVideo	boolean	-
height?	number	-
highReplication?	boolean	-
indexRange?	ByteRange	Bytes of the container’s seek index.
initRange?	ByteRange	Bytes of the container header.
isDrc	boolean	Stable-volume (DRC) audio. It shares its itag with the original, so match formats with all three of itag, isDrc and audioTrack.id.
isDrm	boolean	Encrypted; listed, but never chosen or opened.
isHLS	boolean	-
isLive	boolean	-
isOtf	boolean	Served as OTF segments, which ytdl-core cannot read; listed, but never chosen or opened.
isVb?	boolean	-
itag	number	-
lastModified?	number	Microseconds since the epoch.
loudnessDb?	number	-
maxDvrDurationSec?	number	How far behind the live edge the stream can be read.
mimeType	string	-
projectionType?	string	-
quality?	string	-
qualityLabel?	string	-
qualityOrdinal?	string	-
targetDurationSec?	number	Live segment length.
trackAbsoluteLoudnessLkfs?	number	-
type?	string	FORMAT_STREAM_TYPE_OTF for an OTF format.
videoCodec	string | undefined	-
vocalsBackgroundLoudnessDifferenceDb?	number	-
width?	number	-
xtags?	string	-