[Bug 788525] New: hlssink hanging pipeline

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=788525

            Bug ID: 788525
           Summary: hlssink hanging pipeline
    Classification: Platform
           Product: GStreamer
           Version: 1.12.3
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: florent.thiery at ubicast.eu
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 360919
  --> https://bugzilla.gnome.org/attachment.cgi?id=360919&action=edit
test python program

While trying to generate test HLS samples with multiple audio channel
configurations (1-8), the attached test program hangs at EOS. Moreover, the
target folder shows an incomplete playlist_2.m3u8 file and an incomplete 'video
 ' file.

$ python generate_multichannel_hls.py 2
Generating 2 channel sample
audiointerleave name=adder ! fdkaacenc ! queue ! mux. videotestsrc
pattern=black num-buffers=5 ! video/x-raw, format=(string)I420, width=(int)320,
height=(int)240, framerate=(fraction)30/1, multiview-mode=(string)mono,
pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive ! x264enc
tune=zerolatency speed-preset=ultrafast key-int-max=30 ! h264parse ! queue !
mpegtsmux name=mux ! queue ! hlssink location=/tmp/hlstest/video%02.ts
playlist-location=/tmp/hlstest/playlist_2.m3u8 target-duration=1 audiotestsrc
freq=440 samplesperbuffer=44100 num-buffers=5 ! audio/x-raw,
format=(string)S16LE, layout=(string)interleaved, rate=(int)44100,
channels=(int)1 ! queue ! adder. audiotestsrc freq=880 samplesperbuffer=44100
num-buffers=5 ! audio/x-raw, format=(string)S16LE, layout=(string)interleaved,
rate=(int)44100, channels=(int)1 ! queue ! adder.
Setting positions: [<enum GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT of type
GstAudio.AudioChannelPosition>, <enum GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT of
type GstAudio.AudioChannelPosition>]
0:00:00.022088552  5089 0x55640c21ba80 WARN              aggregator
gstaggregator.c:1393:gst_aggregator_query_latency_unlocked:<adder> Latency
query failed
0:00:00.081936264  5089 0x55640c21ba80 WARN            audioencoder
gstaudioencoder.c:958:gst_audio_encoder_finish_frame:<fdkaacenc0> Can't copy
metadata because input buffer disappeared
0:00:00.082206050  5089 0x55640c21ba80 WARN            audioencoder
gstaudioencoder.c:958:gst_audio_encoder_finish_frame:<fdkaacenc0> Can't copy
metadata because input buffer disappeared

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