VideoHelp Forum




+ Reply to Thread
Results 1 to 4 of 4
  1. Member
    Join Date
    Jul 2007
    Location
    United Kingdom
    Search Comp PM
    Couldn't think of a better title, sorry.

    Basically I got an LG DVD Recorder recently, an LG DRT389H. It's primary usage is for copying recordings from my V+ HD Virgin Media DVR onto DVD. I went through all the menus setting up everything as I thought was correct including setting the display as 16:9 wherever I saw the choice.

    So I start recording and copy the first DVD across and the first odd thing I notice is what DVD Decrypter says about the video stream:
    0xE0 - Video - MPEG-2 / 720x576 (PAL) / 16:9 / Pan-Scan & Letterboxed / LBA: 2 / PTS: 00:00:00.298 / Delay: 0ms
    Pan-Scan & Letterboxed? Bit odd I thought but I rip the DVD and check the files with MediaInfo. That says

    Display aspect ratio : 16:9
    However when I play the file by default most players display it in 4:3. Same goes for when I put it into videoredo for editing or Adobe Encore for authoring. They both treat the file as if it's 4:3.

    Now I know it'll be pretty easy to make sure the final output displays at the correct aspect ratio using DVDPatcher or similar tools but what could be causing these issues in the first place and is it anything to worry about? As I say for any setting on the DVD Recorder that gives an AR choice It's set to 16:9. The Virgin Media box is outputting widescreen as far as I know.

    EDIT:
    Hmm actually further oddness, if I use DVDPatcher to patch the file to 16:9 mediainfo now says the aspect ratio is 2.35:1 although it plays at 16:9. Seems something is wrong to me.
    Last edited by Killer3737; 13th Jun 2013 at 23:49.
    Quote Quote  
  2. Originally Posted by Killer3737 View Post
    Pan-Scan & Letterboxed? Bit odd I thought...
    There's nothing odd about that.
    However when I play the file by default most players display it in 4:3.
    Play the file? What's that mean? You should be playing the DVD, not the VOBs, if that's what you're doing.
    what could be causing these issues in the first place...?
    I can think of two things. The first and most probable one is that the VOBs were captured as 4:3. Most DVD players take the DAR from the IFOs and not the VOBs, so if you play the VOBs or open them in something they'll be seen as 4:3. The other might be that the DAR is being ignored and they're being seen as 5:4 (not 4:3) . 720/576=1.25.

    As long as you play the DVD you shouldn't have to patch anything. If you have DGIndex you can open a VOB in it (maybe not the first one, though, which may contain the menu) and it'll tell you if it's 4:3 or 16:9. As can apps such as GSpot or MediaInfo.
    Quote Quote  
  3. Member
    Join Date
    Jul 2007
    Location
    United Kingdom
    Search Comp PM
    Ok I'll clarify exactly what I'm doing.

    If I put the DVD as is into my drive and play with PowerDVD the menu displays in 4:3, the video 16:9, so that seems ok. I need to edit the recording though so I've tried both ripping in IFO mode of DVD Decrypter and just getting an M2V/AC3 file of the whole DVD or ripping as VOB and using ReJig in IFO mode to get the M2V/AC3 files. Both produce the same results, as they should, but I wanted to check.

    So now I look at the M2V file. Mediainfo says it's 16:9 and media players still play the file as 16:9. All good. However if I drag this raw M2V into Encore that thinks it's 4:3. What I actually do though is use Imago MPEG-Muxer to mux the M2V and AC3 file into an MPG file. That program also thinks the M2V is 4:3, BTW.

    So I've now got an MPG file which still Mediainfo declares is 16:9. Some media players (VLC) still play it 16:9, others like PowerDVD now play it in 4:3 by default. VideoReDo also treats it as 4:3 and after editing it in there the output video is the same. MediaInfo says 16:9, programs like PowerDVD and Encore think it's 4:3.

    If I drag the MPG files into DVDPatcher it says the sequence header is 4:3. I can patch it to 16:9 which means it plays in 16:9 in most players/Encore but Mediainfo now reports it's 2.35:1.

    It seems really weird to me, some programs think it's 4:3, some think it's 16:9.
    Quote Quote  
  4. As long as the IFOs say it's 16:9, then it shouldn't matter what anything else thinks. So, extract the M2V and AC3, do whatever you like to them. Then remux using Muxman and replace the Muxman authored DVD into the original one using VobBlanker. It should then play as it did originally.

    That's one solution anyway.

    By the way, with these DVD recorder-produced DVDs, the menu is part of the main VOBs, right? I think that's where the problem lies. Can you demux without the menu? Or are you already doing that? That first 4:3 menu might be throwing everything else off.

    So, a better way to demux might be to open the VOBs in DGindex and then use the '[' button to skip over the menu. Everything else should then be seen as 16:9 (if they've been encoded as 16:9). After opening the VOBs and skipping over the menu, then go File->Save Project and Demux Video. That will give you the M2V and AC3, as well as a D2V you can delete.

    Another way is to open the final DVD - seen by many players as 4:3 - in PGCEdit and change the DAR to 16:9.
    Quote Quote  



Similar Threads

Visit our sponsor! Try DVDFab and backup Blu-rays!