mcfrisk <[email protected]> added the comment:

Also, the mlt renderer is stuck like this using only CPU time and no IO to the
output file. I think it is related to ffplay not stopping playback of the file
in question:

$ gdb `which melt` 14756
GNU gdb (GDB) 7.1-debian
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i486-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/melt...done.
Attaching to program: /usr/bin/melt, process 14756
Reading symbols from /usr/lib/libmlt.so.2...done.
Loaded symbols for /usr/lib/libmlt.so.2
Reading symbols from /lib/i686/cmov/libpthread.so.0...Reading symbols from
/usr/lib/debug/lib/i686/cmov/libpthread-2.11.1.so...done.
[Thread debugging using libthread_db enabled]
[New Thread 0xa2674b70 (LWP 14758)]
[New Thread 0xac228b70 (LWP 14757)]
done.
Loaded symbols for /lib/i686/cmov/libpthread.so.0
Reading symbols from /lib/i686/cmov/libc.so.6...Reading symbols from
/usr/lib/debug/lib/i686/cmov/libc-2.11.1.so...done.
done.
Loaded symbols for /lib/i686/cmov/libc.so.6
Reading symbols from /lib/i686/cmov/libdl.so.2...Reading symbols from
/usr/lib/debug/lib/i686/cmov/libdl-2.11.1.so...done.
done.
Loaded symbols for /lib/i686/cmov/libdl.so.2
Reading symbols from /lib/ld-linux.so.2...Reading symbols from
/usr/lib/debug/lib/ld-2.11.1.so...done.
done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /usr/lib/mlt/libmltavformat.so...done.
Loaded symbols for /usr/lib/mlt/libmltavformat.so
Reading symbols from /usr/lib/i686/cmov/libavformat.so.52...done.
Loaded symbols for /usr/lib/i686/cmov/libavformat.so.52
Reading symbols from /usr/lib/i686/cmov/libavcodec.so.52...done.
Loaded symbols for /usr/lib/i686/cmov/libavcodec.so.52
Reading symbols from /usr/lib/i686/cmov/libavutil.so.50...done.
Loaded symbols for /usr/lib/i686/cmov/libavutil.so.50
Reading symbols from /usr/lib/libX11.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libX11.so.6
Reading symbols from /usr/lib/i686/cmov/libswscale.so.0...done.
Loaded symbols for /usr/lib/i686/cmov/libswscale.so.0
Reading symbols from /usr/lib/i686/cmov/libavdevice.so.52...done.
Loaded symbols for /usr/lib/i686/cmov/libavdevice.so.52
Reading symbols from /usr/lib/i686/cmov/libavcore.so.0...done.
Loaded symbols for /usr/lib/i686/cmov/libavcore.so.0
Reading symbols from /lib/i686/cmov/libm.so.6...Reading symbols from
/usr/lib/debug/lib/i686/cmov/libm-2.11.1.so...done.
done.
Loaded symbols for /lib/i686/cmov/libm.so.6
Reading symbols from /lib/libbz2.so.1.0...(no debugging symbols found)...done.
Loaded symbols for /lib/libbz2.so.1.0
Reading symbols from /usr/lib/libz.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libz.so.1
Reading symbols from /usr/lib/libxvidcore.so.4...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libxvidcore.so.4
Reading symbols from /usr/lib/libx264.so.98...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libx264.so.98
Reading symbols from /usr/lib/libvpx.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libvpx.so.0
Reading symbols from /usr/lib/libvorbisenc.so.2...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libvorbisenc.so.2
Reading symbols from /usr/lib/libvorbis.so.0...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libvorbis.so.0
Reading symbols from /usr/lib/libtheoraenc.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libtheoraenc.so.1
Reading symbols from /usr/lib/libtheoradec.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libtheoradec.so.1
Reading symbols from /usr/lib/sse2/libspeex.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/sse2/libspeex.so.1
Reading symbols from /usr/lib/libschroedinger-1.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libschroedinger-1.0.so.0
Reading symbols from /usr/lib/libopenjpeg.so.2...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libopenjpeg.so.2
Reading symbols from /usr/lib/libopencore-amrwb.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libopencore-amrwb.so.0
Reading symbols from /usr/lib/libopencore-amrnb.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libopencore-amrnb.so.0
Reading symbols from /usr/lib/libmp3lame.so.0...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libmp3lame.so.0
Reading symbols from /usr/lib/libgsm.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libgsm.so.1
Reading symbols from /usr/lib/libfaac.so.0...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libfaac.so.0
Reading symbols from /usr/lib/libdirac_encoder.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libdirac_encoder.so.0
Reading symbols from /usr/lib/libva.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libva.so.1
Reading symbols from /usr/lib/libxcb.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libxcb.so.1
Reading symbols from /usr/lib/libXext.so.6...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libXext.so.6
Reading symbols from /usr/lib/libXfixes.so.3...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libXfixes.so.3
Reading symbols from /usr/lib/libjack.so.0...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libjack.so.0
Reading symbols from /usr/lib/libasound.so.2...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libasound.so.2
Reading symbols from /usr/lib/libdc1394.so.22...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libdc1394.so.22
Reading symbols from /usr/lib/libogg.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libogg.so.0
Reading symbols from /usr/lib/liborc-0.4.so.0...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/liborc-0.4.so.0
Reading symbols from /lib/libgcc_s.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libgcc_s.so.1
Reading symbols from /usr/lib/libstdc++.so.6...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libstdc++.so.6
Reading symbols from /usr/lib/libXau.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libXau.so.6
Reading symbols from /usr/lib/libXdmcp.so.6...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libXdmcp.so.6
Reading symbols from /lib/i686/cmov/librt.so.1...Reading symbols from
/usr/lib/debug/lib/i686/cmov/librt-2.11.1.so...done.
done.
Loaded symbols for /lib/i686/cmov/librt.so.1
Reading symbols from /usr/lib/libraw1394.so.11...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libraw1394.so.11
Reading symbols from /lib/libusb-1.0.so.0...(no debugging symbols found)...done.
Loaded symbols for /lib/libusb-1.0.so.0
Reading symbols from /usr/lib/mlt/libmltfrei0r.so...done.
Loaded symbols for /usr/lib/mlt/libmltfrei0r.so
Reading symbols from /usr/lib/mlt/libmltsox.so...done.
Loaded symbols for /usr/lib/mlt/libmltsox.so
Reading symbols from /usr/lib/libsox.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libsox.so.1
Reading symbols from /usr/lib/libltdl.so.7...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libltdl.so.7
Reading symbols from /lib/libpng12.so.0...(no debugging symbols found)...done.
Loaded symbols for /lib/libpng12.so.0
Reading symbols from /usr/lib/libmagic.so.1...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libmagic.so.1
Reading symbols from /usr/lib/libgomp.so.1...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libgomp.so.1
Reading symbols from /usr/lib/libsndfile.so.1...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libsndfile.so.1
Reading symbols from /usr/lib/libFLAC.so.8...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libFLAC.so.8
Reading symbols from /usr/lib/mlt/libmltsdl.so...done.
Loaded symbols for /usr/lib/mlt/libmltsdl.so
Reading symbols from /usr/lib/libSDL-1.2.so.0...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libSDL-1.2.so.0
Reading symbols from /usr/lib/libSDL_image-1.2.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libSDL_image-1.2.so.0
Reading symbols from /usr/lib/libdirectfb-1.2.so.9...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libdirectfb-1.2.so.9
Reading symbols from /usr/lib/libfusion-1.2.so.9...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libfusion-1.2.so.9
Reading symbols from /usr/lib/libdirect-1.2.so.9...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libdirect-1.2.so.9
Reading symbols from /usr/lib/libvga.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libvga.so.1
Reading symbols from /usr/lib/libtiff.so.4...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libtiff.so.4
Reading symbols from /usr/lib/libjpeg.so.62...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libjpeg.so.62
Reading symbols from /lib/libx86.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libx86.so.1
Reading symbols from /usr/lib/mlt/libmltxml.so...done.
Loaded symbols for /usr/lib/mlt/libmltxml.so
Reading symbols from /usr/lib/libxml2.so.2...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libxml2.so.2
Reading symbols from /usr/lib/mlt/libmltdgraft.so...done.
Loaded symbols for /usr/lib/mlt/libmltdgraft.so
Reading symbols from /usr/lib/mlt/libmltvmfx.so...done.
Loaded symbols for /usr/lib/mlt/libmltvmfx.so
Reading symbols from /usr/lib/mlt/libmltqimage.so...done.
Loaded symbols for /usr/lib/mlt/libmltqimage.so
Reading symbols from /usr/lib/libQtXml.so.4...Reading symbols from
/usr/lib/debug/usr/lib/libQtXml.so.4.6.2...done.
done.
Loaded symbols for /usr/lib/libQtXml.so.4
Reading symbols from /usr/lib/libQtSvg.so.4...Reading symbols from
/usr/lib/debug/usr/lib/libQtSvg.so.4.6.2...done.
done.
Loaded symbols for /usr/lib/libQtSvg.so.4
Reading symbols from /usr/lib/libQtGui.so.4...Reading symbols from
/usr/lib/debug/usr/lib/libQtGui.so.4.6.2...done.
done.
Loaded symbols for /usr/lib/libQtGui.so.4
Reading symbols from /usr/lib/libQtCore.so.4...Reading symbols from
/usr/lib/debug/usr/lib/libQtCore.so.4.6.2...done.
done.
Loaded symbols for /usr/lib/libQtCore.so.4
Reading symbols from /usr/lib/libexif.so.12...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libexif.so.12
Reading symbols from /usr/lib/libfontconfig.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libfontconfig.so.1
Reading symbols from /usr/lib/libaudio.so.2...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libaudio.so.2
Reading symbols from /lib/libglib-2.0.so.0...(no debugging symbols 
found)...done.
Loaded symbols for /lib/libglib-2.0.so.0
Reading symbols from /usr/lib/libfreetype.so.6...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libfreetype.so.6
Reading symbols from /usr/lib/libgobject-2.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libgobject-2.0.so.0
Reading symbols from /usr/lib/libSM.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libSM.so.6
Reading symbols from /usr/lib/libICE.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libICE.so.6
Reading symbols from /usr/lib/libXrender.so.1...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libXrender.so.1
Reading symbols from /usr/lib/libgthread-2.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libgthread-2.0.so.0
Reading symbols from /usr/lib/libexpat.so.1...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libexpat.so.1
Reading symbols from /usr/lib/libXt.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libXt.so.6
Reading symbols from /lib/libpcre.so.3...(no debugging symbols found)...done.
Loaded symbols for /lib/libpcre.so.3
Reading symbols from /lib/libuuid.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libuuid.so.1
Reading symbols from /usr/lib/mlt/libmltmotion_est.so...done.
Loaded symbols for /usr/lib/mlt/libmltmotion_est.so
Reading symbols from /usr/lib/mlt/libmltkino.so...done.
Loaded symbols for /usr/lib/mlt/libmltkino.so
Reading symbols from /usr/lib/libquicktime.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libquicktime.so.1
Reading symbols from /usr/lib/libdv.so.4...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libdv.so.4
Reading symbols from /usr/lib/mlt/libmltplus.so...done.
Loaded symbols for /usr/lib/mlt/libmltplus.so
Reading symbols from /usr/lib/mlt/libmltcore.so...done.
Loaded symbols for /usr/lib/mlt/libmltcore.so
Reading symbols from /usr/lib/mlt/libmltvorbis.so...done.
Loaded symbols for /usr/lib/mlt/libmltvorbis.so
Reading symbols from /usr/lib/libvorbisfile.so.3...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libvorbisfile.so.3
Reading symbols from /usr/lib/mlt/libmltoldfilm.so...done.
Loaded symbols for /usr/lib/mlt/libmltoldfilm.so
Reading symbols from /usr/lib/mlt/libmltkdenlive.so...done.
Loaded symbols for /usr/lib/mlt/libmltkdenlive.so
Reading symbols from /usr/lib/mlt/libmlteffectv.so...done.
Loaded symbols for /usr/lib/mlt/libmlteffectv.so
Reading symbols from /usr/lib/mlt/libmltjackrack.so...done.
Loaded symbols for /usr/lib/mlt/libmltjackrack.so
Reading symbols from /usr/lib/mlt/libmltdv.so...done.
Loaded symbols for /usr/lib/mlt/libmltdv.so
Reading symbols from /usr/lib/mlt/libmltmelt.so...done.
Loaded symbols for /usr/lib/mlt/libmltmelt.so
Reading symbols from /usr/lib/mlt/libmltresample.so...done.
Loaded symbols for /usr/lib/mlt/libmltresample.so
Reading symbols from /usr/lib/libsamplerate.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libsamplerate.so.0
Reading symbols from /usr/lib/mlt/libmltnormalize.so...done.
Loaded symbols for /usr/lib/mlt/libmltnormalize.so
Reading symbols from /usr/lib/mlt/libmltgtk2.so...done.
Loaded symbols for /usr/lib/mlt/libmltgtk2.so
Reading symbols from /usr/lib/libgdk-x11-2.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libgdk-x11-2.0.so.0
Reading symbols from /usr/lib/libpangoft2-1.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libpangoft2-1.0.so.0
Reading symbols from /usr/lib/libgdk_pixbuf-2.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libgdk_pixbuf-2.0.so.0
Reading symbols from /usr/lib/libpango-1.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libpango-1.0.so.0
Reading symbols from /usr/lib/libpangocairo-1.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libpangocairo-1.0.so.0
Reading symbols from /usr/lib/libgio-2.0.so.0...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libgio-2.0.so.0
Reading symbols from /usr/lib/libgmodule-2.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libgmodule-2.0.so.0
Reading symbols from /usr/lib/libXinerama.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libXinerama.so.1
Reading symbols from /usr/lib/libXi.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libXi.so.6
Reading symbols from /usr/lib/libXrandr.so.2...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libXrandr.so.2
Reading symbols from /usr/lib/libXcursor.so.1...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libXcursor.so.1
Reading symbols from /usr/lib/libXcomposite.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libXcomposite.so.1
Reading symbols from /usr/lib/libXdamage.so.1...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libXdamage.so.1
Reading symbols from /usr/lib/libcairo.so.2...(no debugging symbols 
found)...done.
Loaded symbols for /usr/lib/libcairo.so.2
Reading symbols from /lib/i686/cmov/libresolv.so.2...Reading symbols from
/usr/lib/debug/lib/i686/cmov/libresolv-2.11.1.so...done.
done.
Loaded symbols for /lib/i686/cmov/libresolv.so.2
Reading symbols from /lib/libselinux.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libselinux.so.1
Reading symbols from /usr/lib/libpixman-1.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libpixman-1.so.0
Reading symbols from /usr/lib/libxcb-render-util.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libxcb-render-util.so.0
Reading symbols from /usr/lib/libxcb-render.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libxcb-render.so.0
Reading symbols from /usr/lib/mlt/libmltxine.so...done.
Loaded symbols for /usr/lib/mlt/libmltxine.so
Reading symbols from
/usr/lib/gtk-2.0/2.10.0/loaders/libpixbufloader-jpeg.so...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/gtk-2.0/2.10.0/loaders/libpixbufloader-jpeg.so
0xb76e7424 in __kernel_vsyscall ()
(gdb) info threads
  3 Thread 0xac228b70 (LWP 14757)  0xb76e7424 in __kernel_vsyscall ()
  2 Thread 0xa2674b70 (LWP 14758)  0xb6c5509c in bessel (out_rate=48000,
    in_rate=44100, filter_size=16, phase_shift=10, linear=0,
    cutoff=0.80000000000000004) at libavcodec/resample2.c:87
* 1 Thread 0xb753c6c0 (LWP 14756)  0xb76e7424 in __kernel_vsyscall ()
(gdb) bt full
#0  0xb76e7424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7696636 in nanosleep () at ../sysdeps/unix/syscall-template.S:82
No locals.
#2  0x0804a7e2 in transport (argc=30, argv=0xbff28cd4) at melt.c:264
        value = <value optimized out>
        silent = 0
        progress = 1
        tm = {tv_sec = 0, tv_nsec = 40000}
        total_length = 36833
        last_position = 161
#3  main (argc=30, argv=0xbff28cd4) at melt.c:510
        i = <value optimized out>
        consumer = 0x970aba8
        melt = 0x9780990
        store = <value optimized out>
        name = 0x804b124 "done"
        profile = 0x970ab30
        is_progress = 134525413
        is_silent = -1217902524
        repo = 0x9780990
(gdb) thread 2
[Switching to thread 2 (Thread 0xa2674b70 (LWP 14758))]#0  0xb6c5509c in bessel
    (out_rate=48000, in_rate=44100, filter_size=16, phase_shift=10, linear=0,
    cutoff=0.80000000000000004) at libavcodec/resample2.c:87
87              v += t;
(gdb) bt full
#0  0xb6c5509c in bessel (out_rate=48000, in_rate=44100, filter_size=16,
    phase_shift=10, linear=0, cutoff=0.80000000000000004)
    at libavcodec/resample2.c:87
        lastv = 0
        t = -0.019931802495341967
        i = 2077860963
#1  build_filter (out_rate=48000, in_rate=44100, filter_size=16,
    phase_shift=10, linear=0, cutoff=0.80000000000000004)
    at libavcodec/resample2.c:131
        norm = -nan(0x8000000000000)
        ph = 0
        i = 0
        y = -nan(0x8000000000000)
        x = 0
#2  av_resample_init (out_rate=48000, in_rate=44100, filter_size=16,
    phase_shift=10, linear=0, cutoff=0.80000000000000004)
    at libavcodec/resample2.c:205
        c = 0xda5d8d0
        factor = 0.87074829931972797
        phase_count = 1024
#3  0xb6c54604 in av_audio_resample_init (output_channels=2, input_channels=2,
    output_rate=48000, input_rate=44100, sample_fmt_out=SAMPLE_FMT_S16,
    sample_fmt_in=SAMPLE_FMT_S16, filter_length=16, log2_phase_count=10,
---Type <return> to continue, or q <return> to quit---
    linear=0, cutoff=0.80000000000000004) at libavcodec/resample.c:212
        s = 0xda5d840
#4  0xb76dc27b in producer_get_audio (frame=0xd9fb1b0, buffer=0xa2674364,
    format=0xa2674374, frequency=0xa267436c, channels=0xa2674370,
    samples=0xa2674368) at producer_avformat.c:1690
        resample_factor = -nan(0x8000000000000)
        codec_context = <value optimized out>
        this = 0xd9f2ba8
        position = 0
        real_timecode = 0
        fps = 29.970029970029969
        ignore = 0
        paused = 0
        context = 0xda02c60
        index = 0
        index_max = 1
#5  0xb76a99f1 in mlt_frame_get_audio (this=0xd9fb1b0, buffer=0xa2674364,
    format=0xa2674374, frequency=0xa267436c, channels=0xa2674370,
    samples=0xa2674368) at mlt_frame.c:580
        hide = <value optimized out>
        requested_format = mlt_audio_pcm
#6  0xb45a8d13 in resample_get_audio (frame=0xd9fb1b0, buffer=0xa2674364,
    format=0xa2674374, frequency=0xa267436c, channels=0xa2674370,
---Type <return> to continue, or q <return> to quit---
    samples=0xa2674368) at filter_resample.c:55
        filter = 0x97dcc58
        output_rate = 48000
        error = 0
#7  0xb76a99f1 in mlt_frame_get_audio (this=0xd9fb1b0, buffer=0xa2674364,
    format=0xa2674374, frequency=0xa267436c, channels=0xa2674370,
    samples=0xa2674368) at mlt_frame.c:580
        hide = <value optimized out>
        requested_format = mlt_audio_pcm
#8  0xb76bbd2a in producer_get_audio (this=0xda09710, buffer=0xa2674364,
    format=0xa2674374, frequency=0xa267436c, channels=0xa2674370,
    samples=0xa2674368) at mlt_tractor.c:291
No locals.
#9  0xb76a99f1 in mlt_frame_get_audio (this=0xda09710, buffer=0xa2674364,
    format=0xa2674374, frequency=0xa267436c, channels=0xa2674370,
    samples=0xa2674368) at mlt_frame.c:580
        hide = <value optimized out>
        requested_format = mlt_audio_pcm
#10 0xb76bbd2a in producer_get_audio (this=0xd9fa2c8, buffer=0xa2674364,
    format=0xa2674374, frequency=0xa267436c, channels=0xa2674370,
    samples=0xa2674368) at mlt_tractor.c:291
No locals.
#11 0xb76a99f1 in mlt_frame_get_audio (this=0xd9fa2c8, buffer=0xa2674364,
---Type <return> to continue, or q <return> to quit---
    format=0xa2674374, frequency=0xa267436c, channels=0xa2674370,
    samples=0xa2674368) at mlt_frame.c:580
        hide = <value optimized out>
        requested_format = mlt_audio_pcm
#12 0xb76b8e80 in consumer_read_ahead_thread (arg=0x970aba8)
    at mlt_consumer.c:730
        width = 1280
        height = 720
        video_off = 0
        preview_off = <value optimized out>
        preview_format = <value optimized out>
        afmt = mlt_audio_pcm
        counter = 161
        fps = 29.970029970029969
        channels = 2
        frequency = 48000
        samples = 1602
        audio = 0xa107af50
        audio_off = 0
        frame = 0xd9fa2c8
        image = 0x9eac3030
"\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020---Type
<return> to continue, or q <return> to quit---
\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200"...
        ante = {tv_sec = 1282595913, tv_usec = 335768}
        count = 161
        skipped = 0
        time_wait = 6886179
        time_frame = 243225
        time_process = 1070568
        skip_next = 0
        lock_object = <value optimized out>
#13 0xb768e955 in start_thread (arg=0xa2674b70) at pthread_create.c:300
        __res = <value optimized out>
        __ignore1 = <value optimized out>
        __ignore2 = <value optimized out>
        pd = 0xa2674b70
        now = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1217794060, 0, 4001536,
---Type <return> to continue, or q <return> to quit---
                -1570290536, 550997464, 1065527282}, mask_was_saved = 0}},
          priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0,
              cleanup = 0x0, canceltype = 0}}}
        not_first_call = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#14 0xb760d14e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
(gdb) thread 3
[Switching to thread 3 (Thread 0xac228b70 (LWP 14757))]#0  0xb76e7424 in
__kernel_vsyscall ()
(gdb) bt full
#0  0xb76e7424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7692f15 in pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:122
No locals.
#2  0xb76b85c0 in mlt_consumer_rt_frame (this=0x970aba8) at mlt_consumer.c:892
        size = 1
        frame = <value optimized out>
#3  0xb76dff46 in consumer_thread (arg=0x970aba8) at consumer_avformat.c:1081
        terminate_on_pause = 1
        terminated = 0
        real_time_output = -1
        ante = {tv_sec = 1282595905, tv_usec = 118708}
        fps = 29.970029970029969
        width = 1280
        height = 720
        img_width = 1280
        img_height = 720
        aud_fmt = mlt_audio_pcm
        channels = 2
        total_channels = 2
        frequency = 48000
---Type <return> to continue, or q <return> to quit---
        pcm = 0xa107af50
        samples = 1024
        audio_input_frame_size = 1024
        frame_count = 159
        frame = <value optimized out>
        queue = 0x977bc28
        fifo = 0x979b4a0
        output = 0xd66a560
        input = 0x978b1e0
        swscale = 0xd6889c0
        image = 0x9f3c9030
"\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200\020\200"...
        img_fmt = mlt_image_yuv422
        audio_buf_2 = 0x0
---Type <return> to continue, or q <return> to quit---
        count = 160
        oc = 0x978bba0
        video_st = 0x978b600
        audio_st = {0x978b7e0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}
        audio_pts = 5.269333333333333
        video_pts = 5.271933333333334
        frames = 160
        total_time = 5338656
        fmt = 0xb7512f60
        filename = 0xd9e1490 "p\r\237\r\270\067\237\r"
        format = 0x9 <Address 0x9 out of bounds>
        vcodec = <value optimized out>
        acodec = <value optimized out>
        audio_codec_id = 0
        video_codec_id = -1407025416
        key = "channels.7", '\000' <repeats 16 times>
        frame_meta_properties = <value optimized out>
        i = <value optimized out>
        tmp = <value optimized out>
        metavalue = <value optimized out>
#4  0xb768e955 in start_thread (arg=0xac228b70) at pthread_create.c:300
        __res = <value optimized out>
        __ignore1 = <value optimized out>
---Type <return> to continue, or q <return> to quit---
        __ignore2 = <value optimized out>
        pd = 0xac228b70
        now = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1217794060, 0, 4001536,
                -1407023976, -1420325436, 1065527282}, mask_was_saved = 0}},
          priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0,
              cleanup = 0x0, canceltype = 0}}}
        not_first_call = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#5  0xb760d14e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
No locals.
(gdb)


/proc/14756/fd$ ls -l
total 0
lr-x------ 1 mcfrisk mcfrisk 64 Aug 24 06:24 0 -> pipe:[1501503]
l-wx------ 1 mcfrisk mcfrisk 64 Aug 24 06:24 1 -> pipe:[1501504]
lr-x------ 1 mcfrisk mcfrisk 64 Aug 24 06:24 15 ->
/mnt/vanha_videot/verbier_2010/music/8beat_130bpm.wav
l-wx------ 1 mcfrisk mcfrisk 64 Aug 24 06:24 2 -> pipe:[1501505]
lr-x------ 1 mcfrisk mcfrisk 64 Aug 24 06:24 21 ->
/mnt/vanha_videot/verbier_2010/music/130bpm_metronomi.wav
lr-x------ 1 mcfrisk mcfrisk 64 Aug 24 06:24 25 ->
/mnt/vanha_videot/verbier_2010/20100206_vallon_darbyn_unelmaseina_ja_voltti/GOPR0058_putskua_ylhaalta_alas.MP4
lr-x------ 1 mcfrisk mcfrisk 64 Aug 24 06:24 29 ->
/mnt/vanha_videot/verbier_2010/20100206_vallon_darbyn_unelmaseina_ja_voltti/GOPR0058_putskua_ylhaalta_alas.MP4
l-wx------ 1 mcfrisk mcfrisk 64 Aug 24 06:24 3 ->
/mnt/vanha_videot/verbier_2010/testi19.mp4
lr-x------ 1 mcfrisk mcfrisk 64 Aug 24 06:24 5 ->
/mnt/vanha_videot/verbier_2010/music/ballad_beat_130bpm.wav


$ ffplay
/mnt/vanha_videot/verbier_2010/20100206_vallon_darbyn_unelmaseina_ja_voltti/GOPR0058_putskua_ylhaalta_alas.MP4
FFplay version git-6c4aee9, Copyright (c) 2003-2010 the FFmpeg developers
  built on Aug 23 2010 17:47:52 with gcc 4.4.4
  configuration: --enable-libdc1394 --prefix=/usr --extra-cflags='-Wall -g '
--cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl
--enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid
--enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264
--enable-libspeex --enable-nonfree --disable-stripping --enable-avfilter
--enable-libdirac --disable-decoder=libdirac --enable-libschroedinger
--disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg
--enable-libvpx --extra-libs=-lgcrypt --disable-altivec --disable-armv5te
--disable-armv6 --disable-vis
  WARNING: library configuration mismatch
  avutil      configuration: --enable-libdc1394 --prefix=/usr
--extra-cflags='-Wall -g ' --cc='ccache cc' --enable-shared --enable-libmp3lame
--enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac
--enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm
--enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping
--enable-avfilter --enable-libdirac --disable-decoder=libdirac
--enable-libschroedinger --disable-encoder=libschroedinger --enable-version3
--enable-libopenjpeg --enable-libvpx --extra-libs=-lgcrypt --cpu=i686
--disable-static --disable-ffprobe --disable-ffmpeg --disable-ffplay
--shlibdir=/usr/lib/i686/cmov
  avcore      configuration: --enable-libdc1394 --prefix=/usr
--extra-cflags='-Wall -g ' --cc='ccache cc' --enable-shared --enable-libmp3lame
--enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac
--enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm
--enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping
--enable-avfilter --enable-libdirac --disable-decoder=libdirac
--enable-libschroedinger --disable-encoder=libschroedinger --enable-version3
--enable-libopenjpeg --enable-libvpx --extra-libs=-lgcrypt --cpu=i686
--disable-static --disable-ffprobe --disable-ffmpeg --disable-ffplay
--shlibdir=/usr/lib/i686/cmov
  avcodec     configuration: --enable-libdc1394 --prefix=/usr
--extra-cflags='-Wall -g ' --cc='ccache cc' --enable-shared --enable-libmp3lame
--enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac
--enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm
--enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping
--enable-avfilter --enable-libdirac --disable-decoder=libdirac
--enable-libschroedinger --disable-encoder=libschroedinger --enable-version3
--enable-libopenjpeg --enable-libvpx --extra-libs=-lgcrypt --cpu=i686
--disable-static --disable-ffprobe --disable-ffmpeg --disable-ffplay
--shlibdir=/usr/lib/i686/cmov
  avformat    configuration: --enable-libdc1394 --prefix=/usr
--extra-cflags='-Wall -g ' --cc='ccache cc' --enable-shared --enable-libmp3lame
--enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac
--enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm
--enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping
--enable-avfilter --enable-libdirac --disable-decoder=libdirac
--enable-libschroedinger --disable-encoder=libschroedinger --enable-version3
--enable-libopenjpeg --enable-libvpx --extra-libs=-lgcrypt --cpu=i686
--disable-static --disable-ffprobe --disable-ffmpeg --disable-ffplay
--shlibdir=/usr/lib/i686/cmov
  avdevice    configuration: --enable-libdc1394 --prefix=/usr
--extra-cflags='-Wall -g ' --cc='ccache cc' --enable-shared --enable-libmp3lame
--enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac
--enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm
--enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping
--enable-avfilter --enable-libdirac --disable-decoder=libdirac
--enable-libschroedinger --disable-encoder=libschroedinger --enable-version3
--enable-libopenjpeg --enable-libvpx --extra-libs=-lgcrypt --cpu=i686
--disable-static --disable-ffprobe --disable-ffmpeg --disable-ffplay
--shlibdir=/usr/lib/i686/cmov
  avfilter    configuration: --enable-libdc1394 --prefix=/usr
--extra-cflags='-Wall -g ' --cc='ccache cc' --enable-shared --enable-libmp3lame
--enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac
--enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm
--enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping
--enable-avfilter --enable-libdirac --disable-decoder=libdirac
--enable-libschroedinger --disable-encoder=libschroedinger --enable-version3
--enable-libopenjpeg --enable-libvpx --extra-libs=-lgcrypt --cpu=i686
--disable-static --disable-ffprobe --disable-ffmpeg --disable-ffplay
--shlibdir=/usr/lib/i686/cmov
  swscale     configuration: --enable-libdc1394 --prefix=/usr
--extra-cflags='-Wall -g ' --cc='ccache cc' --enable-shared --enable-libmp3lame
--enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac
--enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm
--enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping
--enable-avfilter --enable-libdirac --disable-decoder=libdirac
--enable-libschroedinger --disable-encoder=libschroedinger --enable-version3
--enable-libopenjpeg --enable-libvpx --extra-libs=-lgcrypt --cpu=i686
--disable-static --disable-ffprobe --disable-ffmpeg --disable-ffplay
--shlibdir=/usr/lib/i686/cmov
  postproc    configuration: --enable-libdc1394 --prefix=/usr
--extra-cflags='-Wall -g ' --cc='ccache cc' --enable-shared --enable-libmp3lame
--enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac
--enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm
--enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping
--enable-avfilter --enable-libdirac --disable-decoder=libdirac
--enable-libschroedinger --disable-encoder=libschroedinger --enable-version3
--enable-libopenjpeg --enable-libvpx --extra-libs=-lgcrypt --cpu=i686
--disable-static --disable-ffprobe --disable-ffmpeg --disable-ffplay
--shlibdir=/usr/lib/i686/cmov
  libavutil     50.24. 0 / 50.24. 0
  libavcore      0. 6. 0 /  0. 6. 0
  libavcodec    52.86. 1 / 52.86. 1
  libavformat   52.78. 3 / 52.78. 3
  libavdevice   52. 2. 1 / 52. 2. 1
  libavfilter    1.37. 0 /  1.37. 0
  libswscale     0.11. 0 /  0.11. 0
  libpostproc   51. 2. 0 / 51. 2. 0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
'/mnt/vanha_videot/verbier_2010/20100206_vallon_darbyn_unelmaseina_ja_voltti/GOPR0058_putskua_ylhaalta_alas.MP4':
  Metadata:
    major_brand     : avc1
    minor_version   : 0
    compatible_brands: avc1isom
  Duration: 00:02:07.29, start: 0.000000, bitrate: 8146 kb/s
    Stream #0.0(eng): Video: h264, yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 8014
kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 128 kb/s
ALSA lib pcm.c:7245:(snd_pcm_recover) underrun occuredB sq=    0B f=0/0
ALSA lib pcm.c:7245:(snd_pcm_recover) underrun occured
ALSA lib pcm.c:7245:(snd_pcm_recover) underrun occured 0B f=0/0   f=0/0
ALSA lib pcm.c:7245:(snd_pcm_recover) underrun occured 0B f=0/0
ALSA lib pcm.c:7245:(snd_pcm_recover) underrun occured 0B f=0/0
ALSA lib pcm.c:7245:(snd_pcm_recover) underrun occured 0B f=0/0
 127.00 A-V:-427.673 s:0.0 aq=    0KB vq=    0KB sq=    0B f=0/0

----------
substatus: needs_more_info -> new

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