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[Mathew Hodson <mathew.hodson@xxxxxxxxx>]

** Changed in: libav (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1462578

Title:
  http streaming is very slow to start up

Status in libav package in Ubuntu:
  New
Status in libav package in Debian:
  Fix Released

Bug description:
  I use livestreamer and mpv to watch streaming content on Twitch. The
  stream is very slow to start and takes at least thirty seconds until
  the video plays.

  I have included the terminal output from livestreamer, but the problem
  also happens when when opening a http stream with mpv by itself.

  $ livestreamer -vp "mpv --cache=1024" twitch.tv/scglive low
  [cli][info] Found matching plugin twitch for URL twitch.tv/scglive
  [cli][info] Available streams: audio, high, low, medium, mobile (worst), source (best)
  [cli][info] Opening stream: low (hls)
  [cli][info] Starting player: mpv --cache=1024
  Playing: -
  [file] Reading from stdin...
  [cache] Cache size set to 1024 KiB
  Cache fill: 42.97% (450560 bytes)   
  [cache] Cache is not responding - slow/stuck network connection?
  [cache] Cache keeps not responding.
  [cache] Cache keeps not responding.
  [cache] Cache keeps not responding.
  [cache] Cache keeps not responding.
  [cache] Cache keeps not responding.
  [libav/demuxer] mpegts: max_analyze_duration reached
  [libav/demuxer] mpegts: Estimating duration from bitrate, this may be inaccurate
  [lavf] LAVF: Program 1 
  Detected file format: MPEG-TS (MPEG-2 Transport Stream) (libavformat)
  File is not seekable, but there's a cache: enabling seeking.
  [cache] Cache keeps not responding.
  [stream] Video (+) --vid=1 (h264)
  [stream] Audio (+) --aid=1 (aac)
  Selected video codec: H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 [lavc:h264]
  Selected audio codec: AAC (Advanced Audio Coding) [lavc:aac]
  AO: [pulse] 44100Hz stereo 2ch float
  VO: [vdpau] 640x360 => 640x360 420p
  [vo/vdpau] Compositing window manager detected. Assuming timing info is inaccurate.
  AV: 13:42:01 / 00:00:00 (0%) A-V: -0.000 Cache: 50%

  
  Exiting... (Quit)
  [cli][info] Player closed
  [cli][info] Stream ended

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: libavformat54 6:9.18-0ubuntu0.14.04.1
  ProcVersionSignature: Ubuntu 3.13.0-54.91-generic 3.13.11-ckt20
  Uname: Linux 3.13.0-54-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sat Jun  6 00:56:17 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2012-11-01 (947 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  SourcePackage: libav
  UpgradeStatus: Upgraded to trusty on 2014-09-04 (274 days ago)

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