bbc radio derby
https://a.files.bbci.co.uk/ms6/live/3441A116-B12E-4D2F-ACA8-C1984642FA4B/audio/simulcast/dash/nonuk/pc_hd_abr_v2/aks/bbc_radio_derby.mpd
Online — 0 failing, 1 warning
General
- Status
- Online
- Type
- DASH
- Container
- dash
- Preview
- 5s clip
- Fetched via
- Direct
Audio stream
- Codec
- aac
- Profile
- HE-AAC
- Sample rate
- 48000 Hz
- Channels
- 2
- Layout
- stereo
- Language
- en
Server location
- Hostname
- a.files.bbci.co.uk
- IP address
- 23.221.240.176
- Provider
- Akamai Technologies
- Location
- Ashburn, Virginia, United States
- Time Zone
- America/New_York
- Network
- Akamai International, BV
Manifest audit
Open the full DASH analyzer →Works, with caveats
0 failing, 1 warnings, 17 passing
- Type
- Dynamic (live)
- Periods
- 1
- Adaptation sets
- 1
- Representations
- 2
- Bitrate range
- 48 kbps – 96 kbps
- Addressing
- SegmentTemplate+duration
- DRM
- Clear
- UTCTiming
- Present
- DVR window
- 21600s
- Presentation delay
- —
0 video, 2 audio
- Warn
suggestedPresentationDelay leaves room to buffer
suggestedPresentationDelay is absent; players will pick their own live edge, and with 7s segments that is often too close to the edge.
- delaySeconds
- null
- segmentDuration
- 7
dash.live.suggested-presentation-delayWhat this means → - Pass
MPD declares a DASH profile
The manifest declares 2 profile(s).
- profiles
- urn:dvb:dash:profile:dvb-dash:2014 urn:dvb:dash:profile:dvb-dash:isoff-ext-live:2014
dash.mpd.profilesWhat this means → - Pass
- Pass
MPD contains at least one period
The manifest contains 1 period(s).
- periodCount
- 1
dash.mpd.periodsWhat this means → - Pass
Every period contains media
Every period contains at least one adaptation set.
dash.mpd.empty-periodWhat this means → - Pass
Live MPD declares availabilityStartTime
availabilityStartTime is declared, so segment availability can be computed.
dash.live.availability-start-timeWhat this means → - Pass
Live MPD declares minimumUpdatePeriod
The manifest asks to be refreshed every 21600s.
- seconds
- 21600
dash.live.minimum-update-periodWhat this means → - Pass
Live MPD provides a UTCTiming source
A UTCTiming source is provided (urn:mpeg:dash:utc:http-iso:2014).
- schemes
- urn:mpeg:dash:utc:http-iso:2014
- values
- https://time.akamai.com/?iso
dash.live.utc-timingWhat this means → - Pass
Live MPD declares timeShiftBufferDepth
The DVR window is 21600s deep.
- seconds
- 21600
dash.live.time-shift-buffer-depthWhat this means → - Pass
availabilityStartTime is consistent with the current clock
availabilityStartTime is in the past relative to the origin’s Date header, as it must be.
- driftSeconds
- -1791907187
dash.live.clock-driftWhat this means → - Pass
Every adaptation set declares segment addressing
Every adaptation set declares how its segments are addressed.
dash.segment.addressingWhat this means → - Pass
Segment template variables are used correctly
Segment templates resolve to distinct URLs for each segment.
dash.segment.template-variablesWhat this means → - Pass
Segment templates declare a timescale
Segment durations are consistent with the declared timescale.
dash.segment.timescaleWhat this means → - Pass
Segment templates declare an initialization segment
Segment templates declare an initialization segment.
dash.segment.initializationWhat this means → - Pass
Switchable adaptation sets declare segmentAlignment
Every multi-representation adaptation set declares segment or subsegment alignment.
dash.adaptation.segment-alignmentWhat this means → - Pass
Representations in a set share a codec family
Each adaptation set holds a single codec family, so its representations are switchable.
dash.adaptation.mixed-codecsWhat this means → - Pass
Every representation declares a bandwidth
Every representation declares @bandwidth.
dash.representation.bandwidthWhat this means → - Pass
Audio adaptation sets declare a language
Audio adaptation sets declare a language (en).
dash.adaptation.audio-languageWhat this means →