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MP4 file plays with audio on full Win 7 but not on embedded 2011 (digital signage template) RRS feed

  • Question

  • Window Media player in embedded says it can't identify the audio but vlc says its mp4a (AAC)
    Windows Media player in full Windows 7 can play it but does not identify the audio codec type
    Why is there a codec difference betweent he two builds?

    Wednesday, February 24, 2010 5:47 PM

All replies

  • The details on this mp4 file are as follows as reported by mplayer.  The Win7 and Embedded are both with the "same" windows media player and same hw.  Its just that the embedded version says it cannot identify the audio codec.  The porperties on the full Windows 7 do not show audio/video types but it plays :-(

    C:\dmedia\received\dm_player\media>mplayer "PS Custom 2 MPEG.mp4"
    MPlayer 1.0rc2-4.2.1 (C) 2000-2007 MPlayer Team
    CPU: Intel(R) Pentium(R) 4 CPU 3.00GHz (Family: 15, Model: 4, Stepping: 9)
    CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
    Compiled with runtime CPU detection.

    Playing PS Custom 2 MPEG.mp4.
    ISO: File Type Major Brand: ISO/IEC 14496-1 (MPEG-4 system) v2
    Quicktime/MOV file format detected.
    [mov] Audio stream found, -aid 0
    [mov] Video stream found, -vid 1
    VIDEO:  [avc1]  1920x1080  24bpp  23.976 fps    0.0 kbps ( 0.0 kbyte/s)
    ==========================================================================
    Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
    Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
    ==========================================================================
    ==========================================================================
    Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
    AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 16000->176400)
    Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio) decoder)
    Friday, February 26, 2010 4:06 PM
  • Hi GD,

    From an initial glance, it looks like you don't have the correct codecs included in the image.  The digital signage template only includes a subset of all the packages available in Standard 7 and likely doesn't include the codecs needed.

    When building your image, perhaps you should try the App Compat template in IBW, or build your image in ICE and include some of the necessary packages found in Premium Codecs or Dolby.

    I hope that helps.
    Wednesday, March 10, 2010 12:21 AM