Speed up clip TIP and questions

P

PJL

I wanted to speed up a clip in WMM2 more than the default 2X; so I doubled
the speed, saved the clip as an AVI then imported it back into Collections,
sped it up again (2X), saved it to an AVI, re-imported it again and then
finally applied a 2X Video Effect to give me a very speedy clip (without
apparent loss of frames or introducing very choppy video).

The question I have, is there any loss in AVI quality the more I apply this
technique to a set of clips?

Also, I have been reading on PapaJohn's website that WMM uses AVI-I versus
AVI-II, what do DV camcorders typically save to tape, AVI-I or AVI-II?

Is there any consumer way of editing AVI-II or is that left to the
professional equipment?

Any advantage to using AVI-II or is it lossy, the more you import and save
back to AVI-II (if you can)?


Thanks,

PJ
 
P

PapaJohn \(MVP\)

Hi PJ.

you can apply the same or different effects to a clip as many as 6 times...
so instead of re-rendering that many times, just apply the Speed-Up Double
effect to the clip a few or more times.

No, you shouldn't have any losses with the multiple renderings...

To the camcorder it's just Digital Video (DV), not type I or II.... it's in
taking the copy from the camcorder to the computer that the different types
get made.... MM1 does it to type II and MM2 to type I.

The only difference is in the audio... the DV file has the video and audio
info all together... the type II DV-AVI file makes an extra audio stream, so
there's the audio with the video plus the extra.. that's why the file is a
bit bigger than the type I that doesn't have that extra data stream.

Movie Maker 1 or 2 edits both types I and II DV-AVI files.... most apps
handle the type II and some handle both.
--
PapaJohn

Movie Maker 2 and Photo Story 3 website - http://www.papajohn.org
tips and tricks: http://www.simplydv.co.uk/simplyBB/viewtopic.php?t=4693
Online Newsletters: http://www.windowsmoviemakers.net/PapaJohn/Index.aspx
 
P

PJL

PapaJohn (MVP) said:
Hi PJ.

you can apply the same or different effects to a clip as many as 6 times...
so instead of re-rendering that many times, just apply the Speed-Up Double
effect to the clip a few or more times.
Click to expand...

Thanks PapaJohn!!

The problem I had with applying the Speed-Up more than once was that the
video got really choppy, maybe it's not supposed to happen that way but it
is the result that I got.

I am running P4 2.8GHZ 512MB RAM - 7200RPM hard drives so I don't think that
I am resource bound.

PJ
 
P

PJL

PapaJohn (MVP) said:
nope, you're not resource bound... but it could be a playback issue if you
looked only at the DV-AVI file.... using the final DV-AVI to render a small
wmv like a pocket PC one would show how smooth the final video is...
Click to expand...


I get the choppy video when I am playing from the storyboard - in the video
monitor window of WMM. I usually render my movies to play back on TV from a
DVD player. Never tried to render to WMV for a household DVD player (versus
one on a PC)
 
P

PJL

PapaJohn (MVP) said:
not a render to get to to TV,,,, just a cross check on the quality of the
rendered file... DV-AVI is difficult for a system to play smoothly, so a
small WMV made from it is a way to check it.

--
Click to expand...

I'll give it a shot... thanks. It would be nice to see the actual results
in the monitor window so you don't have to keep rendering (I'll have the
Stilton with that whine!!).

=;^))
 
R

Rehan

Also note that you could also make a custom speed effect to speed up or sown
the video to the desired value in one step. Less the number of effects,
better it is for the project complexity and quicker it would be to render
the final movie.

To make available custom speed effects with varying speeds; copy paste the
following xml code into notepad and then save the file as spped.xml in
"C:\Program Files\Movie Maker\Shared\AddOnTFX" folder. If AddOnTFX folder is
not already there create it manually. make sure the saved file has xml
extension (not txt).


<TransitionsAndEffects Version="1.0">
<Effects>
<EffectDLL guid="{00000000-0000-0000-0000-000000000000}">
<Effect name="Slow down, 25%" iconid="31" speed="0.8" comment="Slow down,
25%">
</Effect>
<Effect name="Slow down, 50%" iconid="31" speed="0.67" comment="Slow down,
50%">
</Effect>
<Effect name="Slow down, x3" iconid="31" speed="0.33" comment="Slow down,
x3">
</Effect>
<Effect name="Slow down, x4" iconid="31" speed="0.25" comment="Slow down,
x4">
</Effect>
<Effect name="Slow down, x6" iconid="31" speed="0.17" comment="Slow down,
x6">
</Effect>
<Effect name="Slow down, x8" iconid="31" speed="0.13" comment="Slow down,
x8">
</Effect>
<Effect name="Speed up, 25%" iconid="32" speed="1.25" comment="Speed up,
25%">
</Effect>
<Effect name="Speed up, 50%" iconid="32" speed="1.5" comment="Speed up,
50%">
</Effect>
<Effect name="Speed up, x3" iconid="32" speed="3.0" comment="Speed up, x3">
</Effect>
<Effect name="Speed up, x4" iconid="32" speed="4.0" comment="Speed up, x4">
</Effect>
<Effect name="Speed up, x6" iconid="32" speed="6.0" comment="Speed up, x6">
</Effect>
<Effect name="Speed up, x8" iconid="32" speed="8.0" comment="Speed up, x8">
</Effect>
</EffectDLL>
</Effects>
</TransitionsAndEffects>



For more info see the MSDN article on Custom Effects and Transitions:
http://msdn.microsoft.com/library/en-us/dnwmt/html/moviemakersfx.asp
 
P

PJL

Thank you Rehan!! I will give it a try. Have you found the frame loss
significant when using a "speed" parameter of "4" or higher?

Regards,

PJ
 
R

Rehan

The frame loss should be only in the preview. Are you seeing it in the saved
final video ?
 
P

PJL

PJL said:
I will let you know in about 6 minutes.....
Click to expand...

It looks good... no choppiness. As I mentioned to PapaJohn earlier, it
does tend to disrupt the edit process when you can't see the result properly
in the monitor. Do you experience video interruptions when you use "Speed
Up" 4X or higher?

In addition to my PC specs I mentioned in an earlier post I am using an ATI
RADEON 9800 PRO with 256MB, in case you were thinking it's a video card
issue.

Thanks for your help,

PJ

BTW, ANYone who has visited your website definitely has an "AddOnTFX"
folder. =;^))
 

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