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Missing element: MPEG-1 Layer 3 (MP3) decoder

Singh41
Prodigy 210 points

Hi 

I am using GLSDK 7.03 on ubuntu 12.04 ( yocto filesystem) . I am trying to play mp3 on target platform using this command

root@dra7xx-evm:/# gst-launch-1.0 playbin uri=file:///home/test1.mp3 audio-sink=alsasink

after running this command ia m getting below error.

Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Missing element: MPEG-1 Layer 3 (MP3) decoder
WARNING: from element /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0: No decoder available for type 'audio/mpeg, mpegversion=(int)1, mpegaudioversion=(int)1
Additional debug info:
gsturidecodebin.c(930): unknown_type_cb (): /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0
ERROR: from element /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0: Your GStreamer installation is missing a plug-in.
Additional debug info:
gstdecodebin2.c(3928): gst_decode_bin_expose (): /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0:
no suitable plugins found
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ....

.wav file is running properly but what can be the issue with mp3??

Thanks

Singh

  • 0
    Guru 11260 points
    Hello,

    Have you installed all the plugins ?

    can you post the output of gst-inspect-1.0 | grep mp3
    typically It should have some mp3 decoders like mad/lame.

    Typical output looks like:

    libav: avdec_mp3: libav MP3 (MPEG audio layer 3) decoder
    libav: avdec_mp3float: libav MP3 (MPEG audio layer 3) decoder
    libav: avdec_mp3adu: libav ADU (Application Data Unit) MP3 (MPEG audio layer 3) decoder
    libav: avdec_mp3adufloat: libav ADU (Application Data Unit) MP3 (MPEG audio layer 3) decoder
    libav: avdec_mp3on4: libav MP3onMP4 decoder
    libav: avdec_mp3on4float: libav MP3onMP4 decoder
    libav: avmux_mp3: libav MP3 (MPEG audio layer 3) formatter (not recommended, use id3v2mux instead)
    typefindfunctions: application/x-id3v2: mp3, mp2, mp1, mpga, ogg, flac, tta
    typefindfunctions: application/x-id3v1: mp3, mp2, mp1, mpga, ogg, flac, tta
    typefindfunctions: application/x-apetag: mp3, ape, mpc, wv
    typefindfunctions: audio/mpeg: mp3, mp2, mp1, mpga
    lame: lamemp3enc: L.A.M.E. mp3 encoder
    mad: mad: mad mp3 decoder
    mpg123: mpg123audiodec: mpg123 mp3 decoder
    flump3dec: flump3dec: Fluendo MP3 Decoder (C build)


    Cheers,
    --Prabhakar Lad
  • 0 in reply to Prabhakar Lad
    Prodigy 210 points
    Hi Prabhakar ,
    Thanks for reply.
    root@dra7xx-evm:/# gst-inspect-1.0 | grep mp3
    typefindfunctions: application/x-id3v2: mp3, mp2, mp1, mpga, ogg, flac, tta
    typefindfunctions: application/x-id3v1: mp3, mp2, mp1, mpga, ogg, flac, tta
    typefindfunctions: application/x-apetag: mp3, ape, mpc, wv
    typefindfunctions: audio/mpeg: mp3, mp2, mp1, mpga
  • 0 in reply to Singh41
    Guru 11260 points
    Hello,

    You don’t have any of the mp3 decoders that’s the reason you get the above error.
    you need to have at least one of these lame/mad/mpg123/flump3dec

    Install gst-plugins-ugly which has mad/lame
    Install gst-plugins-bad which has mpg123

    Cheers,
    --Prabhakar Lad
  • 0 in reply to Prabhakar Lad
    Prodigy 210 points
    Hi Prabhakar

    Thaks for you reply. On target how can i install plugins? can you suggest . it will be very helpfull.

    Regards
    Singh
  • 0 in reply to Singh41
    Guru 11260 points
    Hello,

    You need to cross compile it and copy the binaries/libraries across in your file system.

    Cheers,
    --Prabhakar Lad
  • 0 in reply to Prabhakar Lad
    Prodigy 210 points
    Thanks Prabhakr.

    Regards
    Singh
  • 0 in reply to Singh41
    Guru 11260 points
    Hi,

    Make sure you compile the gst-plugins-ugly library against the same version of gstreamer which you have in the file system or just build a new filesystem with new binaries.

    Cheers,
    --Prabhakar Lad
  • 0 in reply to Prabhakar Lad
    Prodigy 210 points
    Thanks Prabhakar.

    I got it resolved.