Dvdauthor and NTSC widescreen woes [SOLVED]
I've been trying like crazy for days to get dvdauthor to behave. What I'm doing is authoring a video that is 720x480 NTSC widescreen. It plays fine in Mplayer and FFplay, as well as will play in DVD players. The trouble is that dvdauthor isn't fitting the video to the screen; It's making it huge and cropping the ends. The relevant line in the XML file is this:
<video format="ntsc" aspect="16:9" resolution="720x480" widescreen="nopanscan"> </video>
dvdauthor is showing the correct information upon completion:
INFO: Generating VTS with the following video attributes:
INFO: MPEG version: mpeg2
INFO: TV standard: ntsc
INFO: Aspect ratio: 16:9
INFO: Resolution: 720x480
INFO: Audio ch 0 format: ac3/6ch, 48khz drc
The nopanscan option is supposed to fit the video on screen, right?
By the way, all of the DVD authoring tools that I've tried suffer from the same problem. Not to mention that they all suck for various reasons (particularly devede) and I'd rather do it myself from the command line. Any ideas?
Last edited by skottish (2008-07-28 23:46:03)
Nevermind. It turns out the dvdauthor didn't like the video. When I stripped the secondary audio track from the file with FFmpeg, I used this command:
ffmpeg -map 0:0 -map 0:2 -i fountain.mpg -vcodec copy -acodec copy -g 12 -target dvd -aspect 16:9 THE_FOUNTAIN_01_01.vob
This doesn't creat a NTSC compliant file. This one works though. Notice that target changed to '-ntsc-dvd':
ffmpeg -map 0:0 -map 0:2 -i fountain.mpg -vcodec copy -acodec copy -g 12 -target ntsc-dvd -aspect 16:9 THE_FOUNTAIN_01_01.vob
Groovy.
Last edited by skottish (2008-07-28 23:45:47)
Similar Messages
-
Export HD to NTSC Widescreen -- not truly 16:9
If you export HD footage, 1080x1920 for example, to NTSC Widescreen, you end up with 720x480 with rectangular pixels that have a 1.2121 pixel aspect ratio. That means, the display is effectively 873x480 pixels, which is a a screen aspect ratio of about 16.4:9 instead of 16:9. What you end up with is the original video image squashed between thin, vertical black bars on the right and left sides (not the thick black bars you get when you display a 4:3 video in a 16:9 display).
If you open the video in an NTSC Widescreen Sequence, you'll see those black bars. The video image does not fill the screen.
This is easily fixed: change the Scale Width value to 102.3 (uncheck Uniform Scale). That puts the image portion of the clip into the proper aspect ratio (and shoves the black bars off the left and right sides of the screen). But I'd rather change the scale of all the clips in a project.
Since NTSC has to be 720x480 pixels, if you want to display something at a 16:9 ratio, the pixel aspect ratio should be 1.185 instead of 1.2121.
Perhaps an Adobe engineer can explain why exporting HD to NTSC Widescreen creates a video with black vertical bars and how a 720x480 (with rectangular pixels with a 1.2121 aspect ratio) clip can be considered as having a 16:9 aspect ratio.
Thanks,
Jeff Sengstackyou have to do your frame aspect ratio calculations based on the image area (clean aperture) not the production aperture.
page 4...this link
http://www.panavision.com/publish/2007/12/10/GenesisFAQs20071207.pdf
My take on this is that CCD's that are full size for 35mm film ( beginning of aspect ratios for a lot of stuff ) there is less fudging re: transforming a smaller chip size to the correct exact image size, that the image size derrived from the real camera recording may not be exactly the "production" aspect ratio sizes...or something like that... It is confusing to me also, as I have no video cameras, digital or otherwise, and don't shoot anything but still film.
I think ( not sure but think I read ) that the red camera actually has a CCD "larger" than the genesis, so it actually is capable of recording higher resolutions than typical 4.4.4 production dimensions....but how that works into "clean" image area and aspect ratio is confusing to me also...
To further confuse me, this article has info on exact number of lines broadcast for pal and ntsc...
note THIS in the article ===------------------------------------------------------
NTSC Video
525 scan lines per frame, 30 frames per second (or be exact, 29.97 fps, 33.37 msec/frame)
Interlaced, each frame is divided into 2 fields, 262.5 lines/field
20 lines reserved for control information at the beginning of each fieldSo a maximum of 485 lines of visible data
Basics of Video
Analog video is represented as a continuous (time varying) signal.
Digital video is represented as a sequence of digital images.
Types of Color Video Signals
Component video -- each primary is sent as a separate video signal.
The primaries can either be RGB or a luminance-chrominance transformation of them (e.g., YIQ, YUV).
Best color reproduction
Requires more bandwidth and good synchronization of the three components
Composite video -- color (chrominance) and luminance signals are mixed into a single carrier wave. Some interference between the two signals is inevitable.
S-Video (Separated video, e.g., in S-VHS) -- a compromise between component analog video and the composite video. It uses two lines, one for luminance and another for composite chrominance signal.
Analog Video
The following figures are from A.M. Tekalp, "Digital video processing", Prentice Hall PTR, 1995, NTSC.
NTSC Video
525 scan lines per frame, 30 frames per second (or be exact, 29.97 fps, 33.37 msec/frame)
Interlaced, each frame is divided into 2 fields, 262.5 lines/field
20 lines reserved for control information at the beginning of each field
So a maximum of 485 lines of visible data
Laserdisc and S-VHS have actual resolution of ~420 lines
Ordinary TV -- ~320 lines
Each line takes 63.5 microseconds to scan. Horizontal retrace takes 10 microseconds (with 5 microseconds horizontal synch pulse embedded), so the active line time is 53.5 microseconds.
Digital Video Rasters
Color representation:
NTSC uses YIQ color model.
composite = Y + I cos(Fsc t) + Q sin(Fsc t), where Fsc is the frequency of color subcarrier
PAL Video
625 scan lines per frame, 25 frames per second (40 msec/frame)
Interlaced, each frame is divided into 2 fields, 312.5 lines/field
Uses YUV color model
Digital Video
Advantages:
Direct random access --> good for nonlinear video editing
No problem for repeated recording
No need for blanking and sync pulse
Almost all digital video uses component video
Chroma Subsampling
How to decimate for chrominance?
4:4:4 --> No chroma subsampling, each pixel has Y, Cr and Cb values.
4:2:2 --> Horizontally subsample Cr, Cb signals by a factor of 2.
4:1:1 --> Horizontally subsampled by a factor of 4.
4:2:0 --> Subsampled in both the horizontal and vertical dimensions by a factor of 2. Theoretically, the chroma pixel is positioned between the rows and columns as shown in the figure.
4:1:1 and 4:2:0 are mostly used in JPEG and MPEG (see Chapter 4).
CCIR Standards for Digital Video
(CCIR -- Consultative Committee for International Radio)
CCIR 601 CCIR 601 CIF QCIF
525/60 625/50
NTSC PAL/SECAM
Luminance resolution 720 x 485 720 x 576 352 x 288 176 x 144
Chrominance resolut. 360 x 485 360 x 576 176 x 144 88 x 72
Color Subsampling 4:2:2 4:2:2 4:2:0 4:2:0
Fields/sec 60 50 30 30
Interlacing Yes Yes No No
CCIR 601 uses interlaced scan, so each field only has half as much vertical resolution (e.g., 243 lines in NTSC). The CCIR 601 (NTSC) data rate is ~165 Mbps.
CIF (Common Intermediate Format) -- an acceptable temporary standard
Approximately the VHS quality
Uses progressive (non-interlaced) scan
Uses NTSC frame rate, and half the active lines of PAL signals --> To play on existing TVs, PAL systems need to do frame rate conversion, and NTSC systems need to do line-number conversion.
QCIF -- Quarter-CIF
ATSC Digital Television Standard
(ATSC -- Advanced Television Systems Committee) The ATSC Digital Television Standard was recommended to be adopted as the Advanced TV broadcasting standard by the FCC Advisory Committee on Advanced Television Service on November 28, 1995. It covers the standard for HDTV (High Definition TV).
Video Format
The video scanning formats supported by the ATSC Digital Television Standard are shown in the following table.
Vertical Lines
Horizontal Pixels
Aspect Ratio
Picture Rate
1080
1920
16:9
60I 30P 24P
720
1280
16:9
60P 30P 24P
480
704
16:9 & 4:3
60I 60P 30P 24P
480
640
4:3
60I 60P 30P 24P
The aspect ratio for HDTV is 16:9 as opposed to 4:3 in NTSC, PAL, and SECAM. (A 33% increase in horizontal dimension.)
In the picture rate column, the "I" means interlaced scan, and the "P" means progressive (non-interlaced) scan.
Both NTSC rates and integer rates are supported (i.e., 60.00, 59.94, 30.00, 29.97, 24.00, and 23.98).
At 1920 x 1080, 60I (which CBS and NBC have selected), there will be 1920 x 1080 x 30 = 62.2 millions pixels per second. Considering 4:2:2 chroma subsampling, each pixel needs 16 bits to represent, the bit rate is 62.2 x 16 = 995 Mb/sec.
Homepage of the Advanced Television Systems Committee (ATSC) -
Cs3- exporting dv ntsc widescreen-solution
Hi
Im using CS3 with dv avi type 2 source material , 780x420 Interlaced, 29.97, 16:9 ( widescreen ). Video length is about 50 minutes.
I don't have Sorenson (can't afford now )...and am using CS3 to export to burn a DVD. My impression has been, according to posts here, that CS3 is not the best way to export ...that using frameserver and Sorenson is better...
However, I am new to this and have a lot to learn about the compression used to export for DVD...and so I tried a couple things in CS3.
1) checked preset(s)... for mpeg2-dvd (format) , ntsc high quality preset.
In this case the quality is set by CS3 to 4, lower field first, aspect 4:3, vbr 2 pass, with 1.5, 4 , 7 as min, target, max bitrates.
In the preset for ntsc widescreen medium quality (there is no high quality widescreen preset)...everything is the same except it is vbr 1 pass. and aspect is set to 16:9.
I exported using ntsc high quality but changed quality to 5 from 4, min bitrate to 2 instead of 1.5...aspect to 16:9 from 4:3.
It looked horrible. major horizontal lines throughout...sawtooth patterns, etc.
Harm Millaard suggested a calculator:
http://dvd-hq.info/bitrate_calculator.php
I put in my info and got the suggestion to use 8 mpps for bitrate, CBR...
Did that export....
Looks horrible !.... major horizontal lines, sawtooth patterns...
info from calculator:
------------- calculator will suggest CBR in 2 circumstances instead of VBR 2 pass ---------
Second, when there is enough space on the disc to make the average bitrate equal to or greater than the maximum bitrate. In this case, a VBR file would effectively be CBR, therefore it makes no sense to use the VBR mode (which takes longer to encode). If the calculator suggests VBR with an average bitrate value that is very close (i.e., within 10%) of the maximum bitrate value, you can greatly reduce the encoding time (with a very small loss in quality) by selecting CBR mode.
Sooo, I decided since interlaced video was apparantly NOT AN OPTION ...I went to progressive....
And wanting to take advantage of EVERY OUNCE OF QUALITY I decided to force CS3 to do a VBR 2 pass export using 8,8, 8 as the min, target and max bitrates....
This would seem dumb because CBR at a setting of 8 should be the same thing....
But for some reason I decided to do this crazy thing...and it looks good ....
Although this is fine for now I am wondering....why does interlaced look so terrible ?
I also wonder what the M frames and N frames default settings of 3 and 15 is the same for all presets. My GOP is apparently I - frame = 1
P frames = 17, GOP limit = 18.... but how that translates to M frames (number of B frames between consecutive I frames and P frames) and N frames ( number of frames between I frames - must be mulitiple of M frames value ) ???? What's the story with this and why the default of 3 M frames and 15 N frames ? Confusing.
Don't know if this will ever help anyone else but forcing the VBR 2 pass with 8,8,8 worked well, took about 45min to export 50 minutes of the video..and gave me the calculator's predicted file size to put on the DVD ( roughly 3.3 gig )...
Thanks for that calculator again, Harm
RodHi you guys...thanks !!! for help...and advice
With regard to the m frames and n frames ( which I still don't get ....am totally confused )...I finally opened up the book I bought on mpeg compression...and started looking at the pictures....
I am like very into pictures and illustrations ..... and if it wasn't for the "classics" series of comics ( re: "The Fall Of The Roman Empire" etc)..I would never have graduated from 5th Grade.
Soooo, at least I can start getting into this book a little and see if it starts making sense...
Stan, Bill, Harm....did the AVI export ( 10 gig ) and didn't export audio. Used the wav file from previous export ( mpeg-dvd ) and stuck both in the DVD authoring program... and they were the same "length" ....( hopefully in sync ) ...and I burned a DVD....which took FOREVER....the encoding part of it...couple hours almost...
However, it looks WAY better than the progressive burn...ESPECIALLY ON FAST PANS .....
Harm, I guess what you said about losing the one field , when camera pans fast, makes it more blurry on progressive conversion.... cause I see a pretty big difference in that ....
NOW...( Bill, your comment re: preview quality )...it seems to me that maybe when I was doing the original export and previewing, and seeing the horrible sawtoothing and horizontal lines, etc....that maybe if I had gone ahead and burned the DVD it would have been OK.....
So I'm sorta back where I started. Now I have to start from the beginning....over again....export from CS3 as mpeg DVD, DO NOT LOOK AT PREVIEW ( PUT HANDS OVER EYES )....and burn the DVD and see what happens....
Geez.... there's so much to learn about all this...every " step" in the process.... It's kinda fascinating in a way...you know? Very cool....to think you can actually do what guys were doing back in the 1930's....and get it onto a DVD successfully.... boggles the mind !
Rod -
CS4: Converting AVCHD to NTSC widescreen - narrow vertical bars
Hey, folks.
We're shooting with a Panasonic AG-HMC70P which saves as 1080/60i AVCHD. My target format is NTSC DVD Widescreen (16:9).
Using the MPEG2-DVD format in Media Encoder and selecting Widescreen as the pixel aspect ratio, I get very narrow vertical bars on the left and right, i.e. it's clearly widescreen and not 4:3, but it's simply not filling the complete width of the screen when converting.
The properties of the imported .mts file report a pixel aspect ratio of 1.3333, versus the output format 1.2121, and I'm wondering if this is the source of the bars or there's something else that I'm not setting properly. I'm rather new to CS4, so cockpit error is highly likely here.
This is what properties reports on the imported source file:
==========================================
Type: MPEG Movie
File Size: 363.5 MB
Image Size: 1440 x 1080
Pixel Depth: 32
Frame Rate: 29.97
Source Audio Format: 48000 Hz - compressed - Stereo
Project Audio Format: 48000 Hz - 32 bit floating point - Stereo
Total Duration: 00:03:59:15
Average Data Rate: 1.5 MB / second
Pixel Aspect Ratio: 1.3333
And here's what the resulting converted file with the vertical sidebars reports:
=======================================================
Type: MPEG Movie
File Size: 10.4 MB
Image Size: 720 x 480
Pixel Depth: 32
Frame Rate: 29.97
Total Duration: 00;00;12;16
Average Data Rate: 852 KB / second
Pixel Aspect Ratio: 1.2121
(The target duration is shorter than the source because I'm testing and don't need to render the entire thing until I get it right.)
Been reading manuals, poking Google with a stick and trying various other forms of self education but have come up short. If any of you could point me in the right direction to properly convert AVCHD to NTSC widescreen, I'd be most grateful.
Thanks,
ChrisHi, John.
Here's what I've learned thus far from Googling a bit. This seems to be a common issue, and the solution I've seen proposed (actually from a Vegas forum but the issue is the same) is to expand or crop the image. Taking that advice, I've cropped the top and bottom by 12 and it gets rid of the bars.
While this seems to work, I can't help but feel that this is a hack and that there's actually a "proper" way to deal with this. Surely we're not the only folks going from AVCHD to NTSC widescreen, so I'd be surprised if this was something that the Adobe devs simply missed.
So, while I have a momentary workaround, I'm still in search of the best way to address this issue. Hope my hack is helpful to you as well.
Chris -
in iMovie:
I open a project that has been finalized. source fragment is missing. I see a yellow triangle with exclamation mark. Why is that and how do I solve the problem?
please help.
J. AalbersShouldn't really be the MPE at fault here ... what is the codec of the footage/sequence/project?
Second, can you create a new project in PrPro, then in the media browser, import that sequence from the other project? -
My itunes library in my mac and mac book pro are not the same, depending on which machine I loaded the music on. Isn't icloud and match supposed to solve that problem?
wolverine76 wrote:
Isn't icloud and match supposed to solve that problem?
Um, not really. What are you trying to accomplish? -
When I click on Safari, I get the message "Safari quit unexpectedly." I know I have access to my wireless net work because I just found and downloaded updates and can send and receive mail. What is my problem and hoe is it solved?
As Outlook is not an Apple product, you will find more helpers familiar with Outlook here:
Office for Mac forums -
Since I updated my 4S iphone to the latest iOS7 version, I can no longer close any of my apps. As a result, all my apps remain open on my phone. Even powering down and restarting does not solve the problem. Specifically, when I double-click the start button, my open app icons display. But when I hold my finger on an icon, the apps do not wiggle and display an "x" to close. Any advice... thanks?!
Double tap the Home button, then swop upwards on the App Preview (not the App Icon). Tap the Home button again when done to return to normal screen.
-
I cannot shut dow my MacBook Pro using the apple icon (as it was suppose to be), actually I have to press and hold the on/off buttom. I have taken twice for Mac dealer and they did not solve the problem. What must I do? I would to remark that I have installed 2 antivirus and uninstalled one of them. Since then I have facing this troublesome issue. Thanks
Uninstall the other AV software. They are not needed. All they do is cause trouble like you are having now.
If you have been forcing the Mac to shut down with the power switch you may nave corrupted your disk. You should repair it with disk Utilty to remove any corruption the shutdwons may have cased.
Allan -
I tried to import a PDF of a line drawing into Photoshop Elements. The thumbnail looks fine, but when imported the file is empty. This used to work in the past. What is wrong and how do I solve this?
Hi
The value of the Channel Strip volume etc is not stored within the C Strip setting, as you have discovered.
If you really wanted, you could add a Gain plug to the strip, with it set to give the correct output level with the Fader set to 0
(Or just set the fader manually in MS)
CCT -
FCP to PC, Mac and Television Pal and NTSC
I am editing a DVD for a French dancer who wants to send out the footage as a promotional piece. Target is Europe, North and South America. PC, Mac and Television. When things looked OK on the Mac I burned a dvd from DVD studio Pro. Checked on two PC laptops, a PC tower, a pal system television with dvd player and my Mac tower and powerbook G4.
I have now been reading articles and talking with people about the difference between the gamma
of 1.8 for Mac and 2.2 for PC and 2.5 for television. CRT and LCDs. What is the best we can do today when editing for people who are going to receive and play on different machines?
The new Mac cinema display does not change every time I move my head like the less expensive
LCD monitor I used in France and the PC and Mac laptops. Is it recommended in the video editing
world to buy a pal and/or ntsc monitor to color correct for Pal and NTSC? Does one have to linearize in some way on both?
Both Pal and NTSC seem to play on all computers.
thanks for help
BillI'd just monitor it on a well calibrated external monitor and leave it at that.
If people will be playing it on a PC it will look like any other well calibrated thing would look on a PC and again on the mac.
If people thought PCs were too dark then they'd complain about them and never use them and you wouldn't have to ever worry about it... but they don't.
Just do a normal calibration and leave it at that. You'll kill yourself over EVERY combination!!
CaptM -
I get a message that my iPad is running an unauthorized modified version, even though I'm currently running 4.3.3. What does it mean, and how can I solve this problem? Please help, i ve tried everything. Thanks
I bought my iPad 2 three months ago from apple, and all my updates re from apple through iTunes. Version 4.3.3 is the latest version I updated, have been trying hard to update 4.35 but I get error messages all the time when the update is almost complete. Everything was working beautifully since I bought it, but this update problem just cropped up last week. I need a way out pls.
-
when connecting my iphone 4 to itunes for the first time i get the following message "cannot connect to this device because Apple Mobile Service is not started" what does this mean and how do I solve it?
I'd start with the following document with that one:
iPhone, iPad, iPod touch: How to restart the Apple Mobile Device Service (AMDS) on Windows -
What does it mean when your ipod is in recovery mode and how do I solve this problem
What does it mean when your ipod is in recovery mode and how do I solve this problem?
Unless you have a backup from which you can restore, yes you will lose all of your data and settings.
You should be able to sync your content back to the iPad if you have been syncing with iTunes all along. If you don't sync with iTunes, you can download much of your paid content again for free as long as you use the same Apple ID. This explains downloading past purchases.
http://support.apple.com/kb/ht2519
Unfortunately, at this point, you must restore the device before you can move on. There is nothing you can do to avoid it now. -
Hi There,
My itunes quits unexpectedly when I try to login. I cannot even open the application, not sure why this is happening. Have upgraded my itunes and this has not solved the problem either. If anyone can help me out, that would be appreciated. ThanksHello balisurfergal,
Thank you for using Apple Support Communities.
For more information, take a look at:
Mac OS X 10.6: If an application quits unexpectedly
http://support.apple.com/kb/PH7044
iTunes 10 for Mac: May quit unexpectedly on launch
http://support.apple.com/kb/TS3494
Have a nice day,
Mario
Maybe you are looking for
-
How to remove footer space in Table
I have created a table in main window. after creating main area section, the footer section is appearing as an empty at the bottom. I tried to remove this space by giving zero height to the footer height, but the value is not accepted by the system.
-
My songs are not saved in music throuh i tools
my songs are not saved in music throuh i tools
-
Not playing songs bought on itunes
i just bought a new ipod nano today and went home and put music from a few of my cds onto itunes and then was able to put them onto my ipod and play them normally. then i decided that i wanted more songs, so i went to the music store and bought 5 son
-
IOS7 music album repeat not working however...
I noticed that in the new update iOS 7 the option to repeat album is gone, however there is a way to repeat your album. Just follow these simple steps: 1) Go to music player 2) In the bottom right it says more, Click It. 3) It says album, click it 4)
-
Hi ALL, When loading data from ECC 6.0 to BI 7.0, i remark that that ECC databse grow rapidely. Could you please explain me why the size of database was increased? Also., * could you please help to understand the technical concept and functionnalit