Hello all.
First off, I apologize if this is in the wrong section. I debated wether to put this here or in
the Advanced Conversion section and decided it would be best put here - Sorry in advance
if this is incorrect.
After months of trying to figure out how to transfer some videos off of my DVR, I finally managed to finish my first finished video today.I managed (With help found on this site) to edit out all adverts without recompressing the original Transport stream. However, The original resoloution of the video is 528x480 and therefore is not DVD compliant.
As you may have guessed, It was my goal to archive this video in DVD format but this has been thwarted by this technical limitation. I really don't want to recompress the entire video just to resize to a 720x480 compliant resoloution so as not to loose quality.
Is there any way to resize the MPG video file to a DVD compliant resoloution without having to rencode the entire file? I have searched and have come up empty but I thought perhaps there was a trick that one of the Gurus here were keeping under their hat![]()
Thank you.
PS: Some specs on the file (As reported by G-Spot)
MPG2
NTSC
29.97 FPS
528x480
4:3
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You can't, is the short answer.
The closest you can get is to use the "patch method", so called because you patch the headers of the mpeg file to make it appear to be a compliant resolution. This can fool authoring tools into letting you create a disc with non-compliant material. However there is no guarantee that any given player will actually play it, or play it correctly.
The next best option is to simply add borders and re-encode. This reduces the need for resizing (there is some required to compensate for the pixel aspect ratio correction), but you get larger borders around the image, and they won't be hidden by overscan.Read my blog here.
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Resizing your MPG video requires decompressing, resizing, then compressing again. There is no way around that.
It is possible to author a DVD with MPG files of other frame sizes. This creates an out-of-spec DVD and won't work in all players but you might want to try it.
Also, some DVD players will play MPG files on ISO data disks. -
Womble say in help file to their MPEG Video Wizard DVD they had tested (for SVCD-res. files, DVB is about the same) for statistics and found it working on 90% of tested players. So there are good chances to get it archived in original form with ability to watch as DVD. For other authoring programs DVDPatcher is most often used to patch headers and patch them back to true in VOBs.
It looks technically possible to smart-encode black borders (horisontal size of a 4:3 pillarboxed image is correct in DVB; 528 in 704 or 544 in 720), but nobody seems to have written yet such a useful program. -
The DVDPatcher trick has always worked for me (played on 4 different players) with files of similar resolution.
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IN Pal Land (UK) when I have a 544x576 resolution recording from DVB-T I often use DVD Styler (see tools list) as it accepts and authors without re-encoding and (so far) no problems on any of the 3 players here. (I'm assuming that your 528x480 broadcast is equivalent to our 544x576 broadcasts)
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Thanks for all the responses, Appreciated.
I think I might try the DVD Patcher method first and see if it
plays on one of my 2 DVD Players. I'm not too worried about
wide compatibility.
Thanks again for all the replies. -
I've used the DVD patcher method with 544 by 480 and they have played in my two Sonys, Apexes and Phillips. YMMV
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TimA-C wrote:
(so far) no problems on any of the 3 players here.
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