Title Clip Problems

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LordICE
Posts: 5
Joined: Wed Dec 21, 2005 10:35 pm

Title Clip Problems

Post by LordICE »

hope someone can halp me whit this problem...

I use MSP 8 and my titles don't lock so good... in program I align the titles perfect in the center, but when saveing the file the title is not aligned as in the program... it is in center, but is more to the right... i have to calibrate the titles manualy and this is VERY annoing. calibrate, save, view file - calibratem, save, view... this is tacking hours.
don't know what to do... i'v tried all... i m going nuts!
Terry Stetler
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Location: Westland, Michigan USA

Post by Terry Stetler »

Is the title offcenter when you view the exported file in MediaPlayer or just on the TV? If just the latter then it could be that the horizontal/vertical position adjustments of the TV are out of calibration, which is not too unusual.

Using a 720x480 bitmap (NTSC DV video frame) with a cross drawn centered to it as a background clip and a single line 50 point Ariel title then exporting to an NTSC DV file mine are dead center in the exported file, which is all MSPro has control over.
Terry Stetler
Devil
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Location: Cyprus

Post by Devil »

As a complement to what Terry said, this is closely related to overscan.

The reason for overscan is that different TVs trigger the line time base from the synch pulse at different times. Theoretically, the synch pulse is 0.075H long (where H is the time interval between two lines) but it has also front and back porches plus the colour burst, giving a total minimum of 0.165H, all of which has to be hidden from view. The time base would normally be triggered, at the earliest, at 0.021H and, at the latest, 0.100H. Obviously, when it does trigger will affect the horizontal position of the pic by several per cent of the picture width.

What can influence the triggering time and the display time? There are several factors, amongst them:

- the shape of the incoming synch pulse waveform
- the amplitude of the synch pulse, ie of the incoming signal
- the noise level of the incoming signal
- the pass-band of the TV
- the synch-separator design
- the time constant of the time-base input coupling
- the time-base reaction time
- the time-constant of the horizontal deflecting coil circuit (CRT receiver only)
- the VHT voltage multiplier circuit (this uses the flyback time including the synch pulse time to generate the high voltage for the CRT and can affect the deflection transformer and its circuitry)
- etc.

This is one reason why I always use a TV monitor from the computer when checking out titles, as I make them, although I rarely need to make any adjustments. I've never had complaints when I have centred titles (although I dislike perfectly centred titles, preferring them to start about 1/3 of the way from the left, left-justified, as being much easier to read, when I can).


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LordICE
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Joined: Wed Dec 21, 2005 10:35 pm

Post by LordICE »

the title is offcenter in mediaplayer... the dimensions of video clips i use is 640x480 uncompressed sorces... and the final saveing format is 500x290 PAL avi (xvid codec)...

I think that something is not right... maby the video configuration in the program is the problem... or the saveing configuration... but i don't know what to do enymore...i click and switch evry single buttons in the config panel...

this is the complete configuration in program:
NTSC drop frame (29.97 fps)
Video tracks: 7
Microsoft AVI files
24 bits, 720 x 480, 16:9, 29.97 fps
Lower Field First
DV Video Encoder -- type 1
DV Audio -- NTSC, 48,000 kHz; 16 Bit; Stereo

iff I save the clip whit the same config, it look's good... the title is aligned... but i dont need a frame size this big... and I cant setup the frame size to 500x290 and compres to a decent quality and file size... this is a biger problem then the title calibration 4 me.

the diference in the final clip is that is PAL not NTSC... the frame size, and the audio format (mpeg layer-3)...

if i dont finde a solution... this is going to be a long night... i have 36 title lines to center :(.

thx for help
Devil
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Location: Cyprus

Post by Devil »

Why didn't you say you were trying to set up a non-standard frame size? That is your problem. If you wish to change the frame size, make it so each axis is divisible by 16; neither of yours is. Neither should you change the aspect ratio. Furthermore, make sure, if you are writing DVDs, that you use a standard format. I believe these are:
NTSC, 23.97p, 24p, 29.97p, 30p, 59.94p, 60p, 29.97i, 30i
720 x 480, 704 x 480, 640 x 480, 544 x 480, 352 x 480, 352 x 240, 320 x 240

PAL, 24p, 25p, 50p, 25i
720 x 576. 704 x 576, 544 x 576, 352 x 576, 352 x 288
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LordICE
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Joined: Wed Dec 21, 2005 10:35 pm

Post by LordICE »

it seems that the probem is the xvid codec...
saveing the file whit divx codec solved this nasty problem... and the frame size is the same... problem solved. now it seems that i have anotherone. the complex tranzitions don't show so well as when i saved with xvid codec... but for this problem i allready know the solution.

many thx for help and a happy christmas!

arigatou
Devil
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Post by Devil »

[RANT]Nor did you mention that you were trying DivX/Xvid

Don't the people on these forums realise that if they want help, they should tell us EVERYTHING, FROM THE START?

Not only have Terry and I had to drag data from you like drawing a wisdom tooth, but we waste time second-guessing, wrongly as it happens, what is going adrift. If you had given us all the details from the start, we would have been able to put you right 1½ days ago.

I've said it before and I say it again, we are not clairvoyant :( [/RANT]
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LordICE
Posts: 5
Joined: Wed Dec 21, 2005 10:35 pm

Post by LordICE »

LordICE wrote:the title is offcenter in mediaplayer... the dimensions of video clips i use is 640x480 uncompressed sorces... and the final saveing format is 500x290 PAL avi (xvid codec)...

thx for help
i mention that :P... anywai thx for help and again, happy christmas.
tcarbo

Post by tcarbo »

I have the same problem. Project template is setup as 720x480... created a title clip (centered)... rendered a video file in MPEG format 4:3... and all the titles are cut off on the right. This problem does NOT exist with MSP7.0 Pro (which I've used for 2 years). Just upgraded to MSP8 and low and behold (as if I should be surprised) there's bugs with the new release.

I've tried rendering the video in AVI format and the same thing happens. Designing centered title clips... but they're cut off on the right after rendering.

Any one else having this problem?
Devil
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Location: Cyprus

Post by Devil »

I have not seen it. All titles I've done have rendered exactly as I've set them up.
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