Error rendering audio with libmp3lame

[GoogleCodeExporter]

What steps will reproduce the problem?
1.Select "MPEG-4 .mp4" Encoding Format
2.Start rendering

What is the expected output? What do you see instead?
I expect a working file. Instead, the audio file is inaudible and has a number 
of disorders

What version of the product are you using? On what operating system?
Flowblade 0.12.0 on Ubuntu Studio 14.04

Please provide any additional information below.
Argument for render:
f=mp4
s=1920x1080
hq=1
acodec=libmp3lame
ab=384k
ar=48000
pix_fmt=yuv420p
vcodec=libx264
minrate=0
b=3000k
b_strategy=1
subcmp=2
cmp=2
coder=1
flags=+loop
flags2=dct8x8
qmax=51
subq=7
qmin=10
qcomp=0.6
qdiff=4
trellis=1
aspect=@16/9

Original issue reported on code.google.com by giampaol...@gmail.com on 4 Jun 2014 at 7:53

[GoogleCodeExporter]

Other useful information:

Launch script dir: /usr/bin
Running from installation...
MLT found, version: 0.9.0
OS: Ubuntu 14.04 LTS
Python 2.7.6 (default, Mar 22 2014, 22:59:56) 
[GCC 4.8.2]
GTK+ version: (2, 24, 23)
Locale: it_IT
no more csLADSPA plugins
Detecting environment...
---
video_codecs:
  - a64multi
  - a64multi5
  - asv1
  - asv2
  - bmp
  - cljr
  - dnxhd
  - dpx
  - dvvideo
  - ffv1
  - ffvhuff
  - flashsv
  - flv
  - gif
  - h261
  - h263
  - h263p
  - huffyuv
  - jpegls
  - ljpeg
  - mjpeg
  - mpeg1video
  - mpeg2video
  - mpeg4
  - msmpeg4v2
  - msmpeg4
  - pam
  - pbm
  - pcx
  - pgm
  - pgmyuv
  - png
  - ppm
  - prores
  - qtrle
  - rawvideo
  - roqvideo
  - rv10
  - rv20
  - sgi
  - sunrast
  - svq1
  - targa
  - tiff
  - utvideo
  - v210
  - v410
  - wmv1
  - wmv2
  - xbm
  - xwd
  - zlib
  - zmbv
  - libopenjpeg
  - libschroedinger
  - libtheora
  - libvpx
  - libx264
  - libxvid
...
---
audio_codecs:
  - comfortnoise
  - aac
  - ac3
  - ac3_fixed
  - alac
  - eac3
  - flac
  - mp2
  - nellymoser
  - real_144
  - vorbis
  - wmav1
  - wmav2
  - pcm_alaw
  - pcm_f32be
  - pcm_f32le
  - pcm_f64be
  - pcm_f64le
  - pcm_mulaw
  - pcm_s8
  - pcm_s16be
  - pcm_s16le
  - pcm_s24be
  - pcm_s24daud
  - pcm_s24le
  - pcm_s32be
  - pcm_s32le
  - pcm_u8
  - pcm_u16be
  - pcm_u16le
  - pcm_u24be
  - pcm_u24le
  - pcm_u32be
  - pcm_u32le
  - roq_dpcm
  - adpcm_adx
  - g722
  - g726
  - adpcm_ima_qt
  - adpcm_ima_wav
  - adpcm_ms
  - adpcm_swf
  - adpcm_yamaha
  - libgsm
  - libgsm_ms
  - libmp3lame
  - libopencore_amrnb
  - libopus
  - libspeex
  - libvo_aacenc
  - libvo_amrwbenc
  - libvorbis
...
---
formats:
  - a64
  - ac3
  - adts
  - adx
  - aiff
  - amr
  - asf
  - ass
  - asf_stream
  - au
  - avi
  - avm2
  - cavsvideo
  - crc
  - daud
  - dirac
  - dnxhd
  - dts
  - dv
  - eac3
  - ffm
  - ffmetadata
  - filmstrip
  - flac
  - flv
  - framecrc
  - framemd5
  - g722
  - gif
  - gxf
  - h261
  - h263
  - h264
  - hls
  - ilbc
  - image2
  - image2pipe
  - ipod
  - ismv
  - ivf
  - latm
  - m4v
  - md5
  - matroska
  - matroska
  - mjpeg
  - mlp
  - mmf
  - mov
  - mp2
  - mp3
  - mp4
  - mpeg
  - vcd
  - mpeg1video
  - dvd
  - svcd
  - mpeg2video
  - vob
  - mpegts
  - mpjpeg
  - mxf
  - mxf_d10
  - null
  - nut
  - ogg
  - oma
  - alaw
  - mulaw
  - f64be
  - f64le
  - f32be
  - f32le
  - s32be
  - s32le
  - s24be
  - s24le
  - s16be
  - s16le
  - s8
  - u32be
  - u32le
  - u24be
  - u24le
  - u16be
  - u16le
  - u8
  - psp
  - rawvideo
  - rm
  - roq
  - rso
  - rtp
  - rtsp
  - sap
  - segment
  - smjpeg
  - smoothstreaming
  - sox
  - spdif
  - srt
  - swf
  - 3g2
  - 3gp
  - truehd
  - rcv
  - voc
  - wav
  - webm
  - yuv4mpegpipe
  - alsa
  - oss
...
MLT detection succeeded, 112 formats, 59 video codecs and 52 audio codecs found.
506 MLT services found.
Loading render profiles...
Proxy encoding MPEG-4 Preset Ultrafast ...available
Proxy encoding MPEG-2 Transport Stream ...available
Loading filters...
MLT service frei0r.alphagrad not found.
MLT service frei0r.alphaspot not found.
MLT service frei0r.alpha0ps not found.
MLT service frei0r.select0r not found.
MLT service frei0r.spillsupress not found.
MLT service frei0r.vignette not found.
MLT service frei0r.emboss not found.
MLT service frei0r.dither not found.
MLT service frei0r.colorhalftone not found.
MLT service frei0r.softglow not found.
MLT service frei0r.IIRblur not found.
MLT service frei0r.rgbnoise not found.
MLT service movit.saturation not found.
MLT service frei0r.coloradj_RGB not found.
MLT service frei0r.colorize not found.
MLT service frei0r.colgate not found.
MLT service frei0r.posterize not found.
MLT service frei0r.colortap not found.
MLT service frei0r.sigmoidaltransfer not found.
MLT service frei0r.cairoimagegrid not found.
MLT service frei0r.hqdn3d not found.
MLT service frei0r.sharpness not found.
Loading transitions...
MLT transition frei0r.cairoaffineblend not found.
MLT transition frei0r.cairoblend not found.
Player initialized with profile:  HD 1080p 25 fps
Autosave started...

and rendering output:

render consumer created, path:/home/poliestere/movie.mp4, args: f=mp4, 
s=1920x1080, hq=1, acodec=libmp3lame, ab=384k, ar=48000, pix_fmt=yuv420p, 
vcodec=libx264, minrate=0, b=3000k, b_strategy=1, subcmp=2, cmp=2, coder=1, 
flags=+loop, flags2=dct8x8, qmax=51, subq=7, qmin=10, qcomp=0.6, qdiff=4, 
trellis=1, aspect=@16/9
start_rendering(), start frame :0, stop_frame: 276
[libx264 @ 0x7f273c6bd600] [Eval @ 0x7f274aee2430] Undefined constant or 
missing '(' in 'dct8x8'
[libx264 @ 0x7f273c6bd600] Unable to parse option value "dct8x8"
[libmp3lame @ 0x7f273c6c04e0] [Eval @ 0x7f274aee23e0] Undefined constant or 
missing '(' in 'dct8x8'
[libmp3lame @ 0x7f273c6c04e0] Unable to parse option value "dct8x8"
[libmp3lame @ 0x7f273c6c04e0] channel_layout not specified

Original comment by giampaol...@gmail.com on 4 Jun 2014 at 10:18