Created attachment 360919 [details]
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