Recording in Widescreen

Discussion in 'Video Cameras' started by Nick Le Lievre, Dec 9, 2006.

  1. Last night I recorded 118mins of miniDV footage onto a DVD-RW disc via
    firewire from Canon MV900 to Liteon LVW 5006 standalone DVD Recorder.

    I did it twice as the first -RW disc had a scratch which ruined the
    recording. So it records in real time great! BUT I think it recorded in 4:3
    rather then widescreen as when I brought up the display while playing back
    the DVD it said 4:3.

    It is fullscreen and there are no borders when playing on my LCD widescreen
    TV so I thought it was 16:9 but apparently not. So my question how much
    longer does it take to capture via firewire on a PC (you capture in realtime
    I presume - edit then encode into mpeg2 audio_ts/video_ts before burning am
    I right?).

    Also do you know of any DVD recorders that can record from the firewire port
    in widescreen / whats the difference as my 4:3 recording is fits the screen
    and looks the same as it did on the camera as far as I can tell.
     
    Nick Le Lievre, Dec 9, 2006
    #1
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  2. Nick Le Lievre

    John Russell Guest

    Anamorphic widescreen is used, so that apart from the widescreen bit being
    set, 4:3 and 16:9 have the same resolution.
     
    John Russell, Dec 9, 2006
    #2
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  3. Nick Le Lievre

    Jukka Aho Guest

    You could perhaps rip the video off the DVD on your computer, patch the
    MPEG-2 headers to 16:9, and reauthor it. See these tools:

    SmartRipper:

    <http://www.videohelp.com/tools?tool=SmartRipper>
    <http://www.doom9.org/index.html?/sr.htm>

    DVDPatcher:

    If it was recorded in full-screen format (without black bars on any side
    in the MPEG-2 data - you can check this by examining the VOB files in
    VirtualDubMod [1]), the only difference would be that the material was
    incorrectly flagged as "4:3". Since modern tv sets usually obey WSS
    (widescreen signalling) coming from the DVD player, they might
    automatically switch their mode to 4:3 unless you manually force them
    into the 16:9 mode.

    _____

    [1] http://sourceforge.net/project/showfiles.php?gro
    up_id=65889&package_id=63653&release_id=352709>
     
    Jukka Aho, Dec 9, 2006
    #3
  4. When the camera is connected to the DVD Recorder it is full screen with no
    borders either at the top or at the sides the TV is set to AUTO mode but if
    I set it to 16:9 some of the picture goes missing off the screen... if I set
    the TV to 4:3 there are black borders at either side of the screen but the
    picture fills the screen top and bottom. The DVD Recorder is set to playback
    in 16:9 but I find when I play a widescreen DVD there are borders at the top
    and bottom of the screen unless I set 16:9 in which case the people look
    tall and thin.
     
    Nick Le Lievre, Dec 9, 2006
    #4
  5. Nick Le Lievre

    Jukka Aho Guest

    Aspect ratio issues can be a bit tricky. It sounds like the "16:9"
    setting on your tv set is really a centre cut-out of a 4:3 picture -
    intended for zooming into a letterboxed 16:9 area within a 4:3 frame
    (16L12 -> 16F16).
    Commercial widescreen DVDs are usually Hollywood movies and the like -
    i.e. they originated on film. The widescreen film formats are wider than
    16:9. Hence, when widescreen films are converted to widescreen DVDs,
    they still need smallish black bars at the top and bottom - to make the
    (wider) film frame fit inside a 16:9 video frame.

    The other option would be cutting off the sides. This is indeed done in
    _some_ film-to-DVD transfers, but movie enthusiasts don't usually like
    that method because it alters the original picture composition - the one
    the director had in mind.

    Widescreen (16F16) video shot with a video camera is a different
    matter - it should always fill the entire 16:9 frame.

    See these links for more thorough explanations:

    <http://gregl.net/videophile/anamorphic.htm>

    <http://www.dvdfile.com/news/special_report/production_a_z/anamor
    phic.htm>

    <http://www.thedigitalbits.com/articles/anamorphic/aspectratios/w
    idescreenorama.html>

    You might also want to study the AABCC nomenclature (terms such as
    "12F12", "16L12", "16F16", etc.) That system makes aspect ratio
    discussions easier and less ambiguous:

    <http://google.com/groups?selm=a96fma$kj6$>

    <http://google.com/groups?selm=OEt9h.58882$
    ws.jippii.net>

    <http://google.com/groups?selm=cUB9h.59137$
    ws.jippii.net
     
    Jukka Aho, Dec 9, 2006
    #5
  6. I ripped the DVD to the hard drive and played it back in PowerDVD on a 17"
    CRT it has black borders at the top and bottom whereas this disc plays
    fullscreen no borders on my DVD Recorder connected to LCD widescreen TV does
    this mean its already been recorded in widescreen by my DVD Recorder?
     
    Nick Le Lievre, Dec 10, 2006
    #6
  7. Further... I used ifoedit to view the .ifo file on the DVD and it says 4:3
    then I used the Womble MPEG Video Wizard DVD to edit the files I ripped from
    the disc in that program you can set 4:3 or 16:9 aspect ratio for the
    resulting DVD. I set 16:9 and checked the result with ifoedit and it said
    16:9 but both the original DVD and the DVD created with Mpeg Video Wizard
    play the same in PowerDVD with borders at the top and bottom. So I guess its
    just the header information that is wrong on the original DVD it is 16:9 but
    the Recorder has flagged it as 4:3.
     
    Nick Le Lievre, Dec 10, 2006
    #7
  8. Nick Le Lievre

    Jukka Aho Guest

    Open the ripped MPEG-2 file in VirtualDubMod (for which I already
    provided a download link in one of the earlier messages in this thread.)

    VirtualDubMod is a great tool for analysing video problems since it
    displays the raw video frames "as is" - without deinterlacing or scaling
    them like the media players might do. Examine the clip in VirtualDubMod
    and see if it has has black borders there. Then report back here.

    (VirtualDub also allows saving individual video frames to PNG files. You
    could save a sample frame and upload it to a web server so we could take
    a look at it.)
     
    Jukka Aho, Dec 10, 2006
    #8
  9. Actually I just noticed there is a slight difference between the two
    streams. The stream flagged as 4:3 has a double border down the left and
    right side of the screen when the DVD is played in window mode squashed down
    to the smallest screen size. The stream thats been edited to 16:9 only has a
    left/right border of one thickness when played in window mode of the same
    size but both play the same when full screen with a border at the
    top/bottom. So I guess changing the flag does something here's an article I
    found about it http://www.dvdr-digest.com/articles/articl...flag_page1.html
     
    Nick Le Lievre, Dec 10, 2006
    #9
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