Krystal puzzle

Discussion in 'Amateur Video Production' started by Terry Pinnell, Nov 6, 2008.

  1. This is a pretty obscure and marginally OT query but I thought it was
    worth a shot...

    I have one of those digital picture frames, a 10.4" version made by an
    outfit called Krystal. (No address, no email, no phone number in the
    user guide. All google hits so far have been primarily retailers and
    occasional reviews, but nothing helpful.) It's model DPF-10400, and is
    supposed to be capable of displaying MPEG1/2/4 movies as well as JPG
    photo and MP3 music files. It has no storage of its own, so files are
    played from SD or CF card or a USB Flash Drive, plugged into the
    appropriate socket. Photos and music work fine. It's the absence of
    sound on the movies that has me baffled.

    I'd like to display AVIs from my digicam, such as this typical small
    test file:

    Original AVI
    ------------

    MediaInfo & GSpot etc says:

    Container and general information
    AVI: 1.74 MiB, 1s 0ms
    1 video streams: M-JPEG Writing application: CanonMVI02
    1 audio streams: PCM (Microsoft)

    First video stream
    14.5 Mbps, 640*480 (4/3), at 30.000 fps, M-JPEG

    First audio stream
    88.2 Kbps, 11.024 KHz, 1 channeI, PCM (Microsoft) (Little / Unsigned)

    Obviously it doesn't play on the Krystal in that form, as the unit
    expects MPEG. So I have tried converting it by various means.


    Rendered output from programs like Magix MEP & MemoriesOnTV, etc
    ----------------------------------------------------------------

    MediaInfo etc says:

    MPEG-PS: 906 KiB, 984ms
    1 video streams: MPEG Video
    1 audio streams: MPEG Audio

    First video stream
    8000 Kbps (8000 Kbps), 720*576 (16/9), at 25.000 fps, MPEG Video (PAL)
    (Version 2) ([email protected])

    First audio stream
    224 Kbps, 48.0 KHz, 2 channels, MPEG Audio (Version 1) (Layer 2)

    GSpot says:

    MPEG-2 Program Stream << { 1 vid, 1 aud }
    Sys Bitrate: 10080 kb/s VBR

    Audio Codec MPEG-1 Layer 2
    Info 0xc0:48000Hz 224 kb/s tot Stereo

    That MPEG plays fine on my PC in everything I've tried. But on the
    Krystal I get only the video, no audio.

    Anyone have any suggestions as to a fix please?
     
    Terry Pinnell, Nov 6, 2008
    #1
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  2. Terry Pinnell

    Smarty Guest


    Terry,

    It appears that this device is also sold under the name Gold Lantern, and is
    marketed from a California based company. The spec sheet and user manual are
    at:

    http://www.retrevo.com/search/v2/jsp/mytrevo/myTrevo.jsp?page=man with the
    same model number as you have cited.

    From my reading of the pdfs, it appears that ONLY mp3 audio format is
    supported. It also never explictly states anyhwhere that it will
    simultaneuously play both a "video" and sound, and it may not actually allow
    any playback of a true video/audio muxed file.

    My opinion is that your best shot would be to code the audio as mp3 and then
    mux it with the video. You will at least know that the playback codecs are
    supported.

    Alternately, you could call Gold Lantern in Monarch Beach California at 949
    496 1265 or go to their website, goldlantern.com

    Good luck and hope this helps you,

    Smarty
     
    Smarty, Nov 6, 2008
    #2
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  3. Thanks a lot, Smarty, appreciate your taking that trouble. I'll take a
    look at their site at once. But a few minutes ago, after experimenting
    all day and trying maybe 30 or so conversion configurations with
    SUPER, I've had a breakthrough. I established that I can get it to
    play these files with audio as well as video if I convert to MPEG1. Up
    until then all my tests had been with MPEG2. This first success was
    with audio set to MP2, BTW.
     
    Terry Pinnell, Nov 6, 2008
    #3
  4. My breakthrough was unfortunately short lived!

    When I played full length clips on the Krystal frame (instead of the 1
    second fragment I'd been using for testing), the sound was broken up
    and there was also some video corruption. Had enough for today but
    will get back on the case tomorrow.
     
    Terry Pinnell, Nov 6, 2008
    #4
  5. Terry Pinnell

    Smarty Guest


    Terry,

    Your findings are encouraging, indicating there is a demuxer. Other than
    spending another full day of experimentation, I would call them or visit
    their web site. Good luck and glad to assist.

    Smarty
     
    Smarty, Nov 6, 2008
    #5
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