[FFmpeg-trac] #4838(ffmpeg:new): cannot convert .webm to .mp3

[FFmpeg]

#4838: cannot convert .webm to .mp3
--------------------------------+---------------------------------------
             Reporter:  tone87  |                     Type:  defect
               Status:  new     |                 Priority:  normal
            Component:  ffmpeg  |                  Version:  unspecified
             Keywords:          |               Blocked By:
             Blocking:          |  Reproduced by developer:  0
Analyzed by developer:  0       |
--------------------------------+---------------------------------------
 Summary of the bug:
 How to reproduce:
 {{{
 ffmpeg version 2.2.1 Copyright (c) 2000-2014 the FFmpeg developers
 built on Apr 13 2014 13:00:18 with gcc 4.4.6 (GCC) 20120305 (Red Hat
 4.4.6-4)
 configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
 --mandir=/usr/share/man --enable-shared --enable-runtime-cpudetect
 --enable-gpl --enable-version3 --enable-postproc --enable-avfilter
 --enable-pthreads --enable-x11grab --enable-vdpau --disable-avisynth
 --enable-frei0r --enable-libopencv --enable-libdc1394 --enable-libgsm
 --enable-libmp3lame --enable-libnut --enable-libopencore-amrnb --enable-
 libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex
 --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264
 --enable-libxavs --enable-libxvid --extra-cflags='-O2 -g -pipe -Wall
 -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-
 size=4 -m64 -mtune=generic -fPIC' --disable-stripping
 libavutil 52. 66.100 / 52. 66.100
 libavcodec 55. 52.102 / 55. 52.102
 libavformat 55. 33.100 / 55. 33.100
 libavdevice 55. 10.100 / 55. 10.100
 libavfilter 4. 2.100 / 4. 2.100
 libswscale 2. 5.102 / 2. 5.102
 libswresample 0. 18.100 / 0. 18.100
 libpostproc 52. 3.100 / 52. 3.100
 Guessed Channel Layout for Input Stream #0.0 : stereo
 Input #0, matroska,webm, from 'Baby K - Roma - Bangkok (Official Video)
 ft. Giusy Ferreri-GCPQ6_F-xfo.webm':
 Metadata:
 encoder : google
 Duration: 00:03:26.16, start: 0.000000, bitrate: 131 kb/s
 Stream #0:0(eng): Audio: opus, 48000 Hz, stereo (default)
 [abuffer @ 0xe60b60] Unable to parse option value "(null)" as sample
 format
 Last message repeated 1 times
 [abuffer @ 0xe60b60] Error setting option sample_fmt to value (null).
 [graph 0 input from stream 0:0 @ 0xe60a40] Error applying options to the
 filter.
 Error opening filters!
 }}}
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4838>
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