I get the exact same backtrace, when trying to play apple lossless files (all of them): Starting program: /usr/bin/gst-launch-1.0 -v playbin uri=file:///home/andreas/Musik/test.m4a [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Setting pipeline to PAUSED ... /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: ring-buffer-max-size = 0 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: buffer-size = -1 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: buffer-duration = -1 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: use-buffering = false /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: download = false /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: uri = file:///home/andreas/Musik/Frozen/01-cast_of_frozen-frozen_heart.m4a /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: connection-speed = 0 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: source = "\(GstFileSrc\)\ source" [New Thread 0x7ffff4fd1700 (LWP 5291)] Pipeline is PREROLLING ... [New Thread 0x7fffeffff700 (LWP 5292)] /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:src: caps = audio/x-m4a /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind.GstPad:src: caps = NULL [New Thread 0x7fffef5e5700 (LWP 5293)] [New Thread 0x7fffeede4700 (LWP 5294)] [New Thread 0x7fffdfbdb700 (LWP 5295)] /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0: max-size-buffers = 5 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0: max-size-time = 0 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0: max-size-bytes = 2097152 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0.GstPad:sink_0: caps = audio/x-alac, codec_data=(buffer)00000024616c616300000000000010000010280a0e0200ff00000000000d3a070000ac44, samplesize=(int)16, rate=(int)44100, channels=(int)2 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0.GstPad:sink_0: caps = audio/x-alac, codec_data=(buffer)00000024616c616300000000000010000010280a0e0200ff00000000000d3a070000ac44, samplesize=(int)16, rate=(int)44100, channels=(int)2 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0.GstPad:sink_0: caps = audio/x-alac, codec_data=(buffer)00000024616c616300000000000010000010280a0e0200ff00000000000d3a070000ac44, samplesize=(int)16, rate=(int)44100, channels=(int)2 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0: max-size-buffers = 5 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0: max-size-time = 0 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0: max-size-bytes = 2097152 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/avdec_alac:avdec_alac0.GstPad:src: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0: max-size-buffers = 5 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0: max-size-time = 0 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstMultiQueue:multiqueue0: max-size-bytes = 2097152 /GstPlayBin:playbin0/GstInputSelector:inputselector0.GstSelectorPad:sink_0: always-ok = false /GstPlayBin:playbin0/GstInputSelector:inputselector0.GstSelectorPad:sink_0: active = true /GstPlayBin:playbin0/GstInputSelector:inputselector0: active-pad = "\(GstSelectorPad\)\ sink_0" [New Thread 0x7fffd2830700 (LWP 5297)] /GstPlayBin:playbin0/GstInputSelector:inputselector0.GstPad:src: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 /GstPlayBin:playbin0/GstPlaySink:playsink.GstGhostPad:audio_sink.GstProxyPad:proxypad4: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 /GstPlayBin:playbin0/GstPlaySink:playsink/GstTee:audiotee.GstTeePad:src_0: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 /GstPlayBin:playbin0/GstPlaySink:playsink/GstStreamSynchronizer:streamsynchronizer0.GstPad:src_0: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 /GstPlayBin:playbin0/GstPlaySink:playsink/GstBin:abin.GstGhostPad:sink.GstProxyPad:proxypad7: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 /GstPlayBin:playbin0/GstPlaySink:playsink/GstBin:abin/GstQueue:aqueue.GstPad:sink: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 /GstPlayBin:playbin0/GstPlaySink:playsink/GstBin:abin/GstQueue:aqueue.GstPad:sink: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 /GstPlayBin:playbin0/GstPlaySink:playsink/GstBin:abin.GstGhostPad:sink: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 /GstPlayBin:playbin0/GstPlaySink:playsink/GstStreamSynchronizer:streamsynchronizer0.GstPad:sink_0: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 /GstPlayBin:playbin0/GstPlaySink:playsink/GstTee:audiotee.GstPad:sink: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 /GstPlayBin:playbin0/GstPlaySink:playsink.GstGhostPad:audio_sink: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 /GstPlayBin:playbin0/GstInputSelector:inputselector0.GstSelectorPad:sink_0: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 /GstPlayBin:playbin0/GstInputSelector:inputselector0.GstSelectorPad:sink_0: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0.GstGhostPad:src_0.GstProxyPad:proxypad3: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0.GstDecodePad:src_0.GstProxyPad:proxypad2: caps = audio/x-raw, format=(string)S16LE, layout=(string)interleaved, rate=(int)44100, channels=(int)2, channel-mask=(bitmask)0x0000000000000003 Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fffeede4700 (LWP 5294)] gst_ffmpegauddec_frame (ffmpegdec=0x0, ffmpegdec@entry=0x7fffe00a2530, data=data@entry=0x7fffe00a80b0 " ", size=0, size@entry=1499, got_data=0x200000000, got_data@entry=0x7fffeede3a58, ret=ret@entry=0x7fffeede3a5c) at gstavauddec.c:644 644 gstavauddec.c: Datei oder Verzeichnis nicht gefunden.