Recording problem with Avermedia TV Studio card...

Discussion in 'Amateur Video Production' started by Peter Newman, Aug 26, 2003.

  1. Peter Newman

    Peter Newman Guest

    I am using an Avermedia TV Studio PCI card to record TV programs into
    MPEG II files.

    The TV card reception is perfect and yet when I play back what I
    record, there seems to be quite a bit "digital smearing effects" (for
    lack of better description) with moving backgrounds, which show up as
    some blurry little squares.

    My computer is 2.5 GHz, with 768 MB DDR and on-board video, 200 GB
    7200rpm HD and I am recording at full size (640x480).

    Any thoughts? Thanks.
     
    Peter Newman, Aug 26, 2003
    #1
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  2. Peter Newman

    FLY135 Guest

    I'm guessing you are using a realtime MPEG-2 encoder. If so then marginal
    quality is the norm. I use PowerVCR for timeshifting TV shows, but the
    quality is not good enough to author with. You could try reducing the horz
    res and/or uping the bitrate.

    If you want to author quality MPEGs with your setup then you should capture
    AVIs with MJPEG or HuffYUV compression, then encode MPEG-2 offline.
     
    FLY135, Aug 26, 2003
    #2
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  3. Peter Newman

    Peter Newman Guest

    The TV card outputs in the MPEG format only; so I don't even have the
    option of going through the AVI and encoding process to achieve high
    grade video.

    The interesting thing is, when I execute time-shift function, the
    video quality is decent, although I don't even know if that would be
    considered authorable.

    Some of the parameters I can change in AverTV is: resolution, bitrate,
    fps, GOP, sub-GOP. I played around a couple of combinations and
    really didn't see a difference.

    What do you think the problem is? Thanks.

    Also, what's the minimal resolution of video I need to achive in order
    to have decent playback on the actual TV?
     
    Peter Newman, Aug 28, 2003
    #3
  4. Peter Newman

    Samuel Paik Guest

    No, the Avermedia AverTV Studio card is a pretty standard Fusion878A
    based card (cost reduced BT878). The software you are using may
    only record in MPEG, but it is encoding to MPEG in real time, using
    only software.

    Probably about 350 pixels across. More pixels is usually better, up to
    about 720 pixels. You need to capture 480 pixels vertically at
    29.97 fps for good quality video.

    Sam
     
    Samuel Paik, Aug 29, 2003
    #4
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