ADOBE PREMIERE PRO: Tutorials Forum Articles Creative Cloud Debate

720x404 MPEG2 from NTSC 720x480 wide source

COW Forums : Adobe Premiere Pro

<< PREVIOUS   •   FAQ   •   VIEW ALL   •   PRINT   •   NEXT >>
ronaldo montalvo
720x404 MPEG2 from NTSC 720x480 wide source
on Jun 29, 2009 at 12:26:28 am

i have rendered out animation codec movies from afx comps set to NTSC DV widescreen 720x480 16x9 (1.2), 29.97 no fields. when i import those into a premierCS3 NTSC DV widescreen project they look correct before rendering in the premier output window and show correct interpretation/PAR info. when i export them to the media encoder i use the NTSC progressive high-quality MPEG-2-DVD settings with the widescreen 16x9 button hi-lited.

in the viewer window of media encoder (which says the output is 720x480) the video is the right 16x9 aspect ratio but too small and shows black all around in the output window. if you go ahead and export, when you look at the actual size of the MPEG2 file that the encoder creates, it is 720x404 pixels. this doesn't seem right, does encore stretch this file vertically to make the widescreen setting DVD or is something screwed up? shouldn't it create a 720x480 mpeg2 file? can anyone explain this or even tell me if it's right or not.

i'm on dual core intel mac with CS3.


Return to posts index

Tim Kolb
Re: 720x404 MPEG2 from NTSC 720x480 wide source
on Jun 29, 2009 at 12:45:25 am

Do you mean that it's "letterboxed" with black above and below...showing a 16x9 picture in a 4:3 frame?



TimK,
Director, Consultant
Kolb Productions,


Return to posts index

ronaldo montalvo
Re: 720x404 MPEG2 from NTSC 720x480 wide source
on Jun 29, 2009 at 12:49:38 am

thanks tim for quick back. no, it's a 16x9 aspect ratio (unsquished in H) in the media encoder output window with black on the sides and the top. do you know what's up with the 720x404 output from the encoder?



Return to posts index


ronaldo montalvo
Re: 720x404 MPEG2 from NTSC 720x480 wide source
on Jun 29, 2009 at 1:03:21 am

well this is odd to me. i threw away the premier preferences, re-imported the NTSC DVwide movies into premier wide project, then export to media encoder. the video now fills the media encoder output window correctly but with the widescreen mpeg2-dvd settings the resulting exported mpeg2 file is still 720x404. (i'm finding the rendered size by opening the rendered mpeg2 file in qtime pro.)



Return to posts index

Tim Kolb
Re: 720x404 MPEG2 from NTSC 720x480 wide source
on Jun 29, 2009 at 2:42:35 pm

Can you give me the specific properties of the source material and the specific settings of the encode output?

There's something I must be missing here...




TimK,
Director, Consultant
Kolb Productions,


Return to posts index

ronaldo montalvo
Re: 720x404 MPEG2 from NTSC 720x480 wide source
on Jun 29, 2009 at 6:33:05 pm

the source movies are animation codec quicktime rendered from afx in NTSC DV 29.97 widescreen format, no audio. in premier (and qtime pro) they are info'd and display correctly as 720x480 (1.2) 29.97. they are on a NTSC DV widescreen timeline that is the same.

the media encoder settings are;
FORMAT MPEG-2DVD, settings 720x480, 29.97 dropframe(fps), progressive, quality5.0,,
VR, 2 pass, min 1.50, target 6.36, max 7.99, there is no audio, the widescreen 16:9 radio button in settings is checked.

after the encode which produces a 720x404 mpeg2, this is the info from the xmp file that encoder creates:
xmlns:xmpDM="http://ns.adobe.com/xmp/1.0/DynamicMedia/"
xmlns:stDim="http://ns.adobe.com/xap/1.0/sType/Dimensions#"
xmlns:xap="http://ns.adobe.com/xap/1.0/"
xmpDM:videoFrameRate="29.97fps"
xmpDM:videoFieldOrder="None"
xmpDM:videoPixelAspectRatio="12/10"
xap:CreateDate="12804-01-07T08:12:49-07:00"
xap:ModifyDate="0000-01-01T17:18:57.02904-07:00">
stDim:w="720"
stDim:h="480"/>

it seems straightforward but isn't somehow. can you confirm that the mpeg2 file that should be created would 720x480 and that 720x404 is not a size that is somehow stretched vertically back to 480 when you burn the DVD in encore? thanks for taking the time to look at this. it's driving me crazier.


Return to posts index


Tim Kolb
Re: 720x404 MPEG2 from NTSC 720x480 wide source
on Jun 29, 2009 at 8:49:27 pm

What if you "uncheck" the 16:9 button?




TimK,
Director, Consultant
Kolb Productions,


Return to posts index

ronaldo montalvo
Re: 720x404 MPEG2 from NTSC 720x480 wide source
on Jun 29, 2009 at 9:20:58 pm

if i uncheck the 16:9 button then the rendered mpeg is 640x480 and the video is letterboxed black top+bottom.

something i discovered is that the media encoder rendered mpeg, which qtime pro infos/displays as 720x404, when imported into premier, premier interprets & displays it as 720x480 (1.2). i went ahead and used those mpeg files to send to encore where it seems to produce a correct widescreen DVD without re-encoding. so the problem (or non-problem) is solved but the question remains for now, i guess. i wonder if it's just a different quicktime player interpretation than adobe is using on wide-screen mpegs that media encoder produces. the 720x404 size is a square pixel 16x9 aspect ratio.

have you ever created this format mpeg2 files? what actual dimension are they in your experience in qtime? anyway, thanks again for your time.


Return to posts index

Tim Kolb
Re: 720x404 MPEG2 from NTSC 720x480 wide source
on Jun 30, 2009 at 2:41:07 am

640x480?

Are you making MPEG2s or MPEG1?




TimK,
Director, Consultant
Kolb Productions,


Return to posts index


ronaldo montalvo
Re: 720x404 MPEG2 from NTSC 720x480 wide source
on Jun 30, 2009 at 3:30:51 am

mpeg2. i think what's going on is a discrepancy between apple/quicktime reading of the mpegs size and the way adobe and media encoder are creating it/reading it. i found an cow afx thread on this where the conclusion seemed to be:

"If your footage is 16:9 then you should encode it as a 16:9 MPEG-2. In QuickTime player this 16:9 MPEG-2 will have an odd frame size (720x404) but that is normal and correct. "

http://forums.creativecow.net/thread/2/934557#934575

as a test i did the same routine with apple compressor and the resulting mpeg widescreen file reads as 720x404 in quicktime pro but interprets as 720x480 (1.2) in premier and burns correctly to a 16x9 NTSC widescreen DVD in encore. go figure.


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2020 CreativeCOW.net All Rights Reserved
[TOP]