PDA

View Full Version : Recording in slow-mo.



XyZspineZyX
10-14-2003, 09:35 AM
I'm trying to record tracks when playing em in half the speed.

I dunno but think this ought to give a smoother movie but when a play the recording it plays in normal speed.

I use fraps to record.

Any ideas?

http://members.chello.se/ven/milton.jpg

XyZspineZyX
10-14-2003, 09:35 AM
I'm trying to record tracks when playing em in half the speed.

I dunno but think this ought to give a smoother movie but when a play the recording it plays in normal speed.

I use fraps to record.

Any ideas?

http://members.chello.se/ven/milton.jpg

XyZspineZyX
10-14-2003, 10:16 AM
The thing with fraps19D (the free version) is that unlike version 2 is doesn't pad out dropped frames. If you playback a capture done with fraps 2, you will get what you saw during the capture including the dropped frames.
Fraps19d however doesn't pad the dropped frames but puts the frames that it captures together missing out the dropped ones and then plays it back at the speed fraps was set to capture.
Basically if you set fraps to capture at 30fps, and then capture a track playing back at half speed. Physically fraps may only be capturing at 15 frames a second and dropping 15 frames a second. But when you play it back it will play it at 30fps skipping the dropped frames which will result in a video capture that appears to be normal speed and smooth.
This is confusing and it confuses me a little.
The half speed capture technique is to set fraps capture at 15fps and play back the track at half speed and then record it. Then with virtualdub or whatever video editor you choose, you set your video on the timeline to output at 30fps. This doubles the speed of your half speed capture that you did at 15fps and gives you a normal speed playback at 30fps that looks liquid smooth.
I myself set fraps19d to capture at 25fps and play my tracks back at half speed. Physically my system can only manage between 12-15fps capture with fraps, so my resulting capture file plays back at a silky smooth 25fps.
This is the way I captured my sequences in my 'Sacrifice' video.

If you want to capture a video sequence at half speed, you would have to set track playback to 1 quarter speed.
Either set fraps to capture at 25/30fps. Or 15fps and then double up in Virtualdub. The end capture should then be halfspeed.
Am I confusing you? I'm confusing myself /i/smilies/16x16_smiley-mad.gif

Hope you can get some sense out of it.

Regards
Scrag

<center>http://www.appy55.dsl.pipex.com/FB/squigsig.jpg

Message Edited on 10/14/0310:30AM by Scragbat

T_O_A_D
10-14-2003, 10:26 AM
Well I am /i/smilies/16x16_smiley-sad.gif confused job well done Scragbat /i/smilies/16x16_smiley-wink.gif I'll go home and read again with Fraps infront of me.

<Left>
131st_VFW_CO_Toad (http://www.geocities.com/vfw_131st/index.htm)

<Left>
/i/smilies/16x16_smiley-surprised.gif MY Track IR Fix (http://forums.ubi.com/messages/message_view-topic.asp?name=us_il2sturmovik_ts&id=zwqtg)


<Center>http://home.mchsi.com/~131st_vfw/Mad_toad.jpg </a>

XyZspineZyX
10-14-2003, 11:18 AM
Very usefull info. Thanks alot.

Now, see, we needed this forum.

I got tons of questions coming.

http://members.chello.se/ven/milton.jpg

XyZspineZyX
10-14-2003, 03:02 PM
When I read Scragbats post for the first time, my brain starts the negative-g effect, afterwards the opposit, so it
immediately blacked out. Still recovering...

Hope I'll clear that out in the evening...

But thanks, really!

XyZspineZyX
10-14-2003, 03:46 PM
Hey, Ven, are you trying to make movies following Lars von Trier's 'Dogma' rules? Trembling cameras, ugly faces and strange corporal noises are a must. Isn't that like FB v1.11 patch? /i/smilies/16x16_smiley-tongue.gif

- Dux Corvan -



http://www.theinformationminister.com/press.php?ID=612322300

</span></blockquote></font></td></tr>

XyZspineZyX
10-15-2003, 02:51 PM
Veng -

If your using premiere to do ur editing, right click on the clip, and choose speed from the pop up menu. Adjust your % and wahla, your have slowed down your clip.



"War is not fair and never claimed to be"

XyZspineZyX
10-15-2003, 05:35 PM
well what scag said makes good sense, he obviously knows what hes doing, thanks for the tip.

There is another way to capture slow motion. Its a basic crude way bot it works. It requires a animation compiling program that can read numbers frame stills.


Just setup FB to a okay resolution, 640x480 or 1024x768, but no higher.


Then run a track and when you are at the points you want to record slow it to the slowest possible speed. Then just start hitting the printscreen key as many times as possible. I know it sounds stupid but it works. Keep hitting the printscreen until you have captured the segment you want.

If you have premiere, import the stills as numbered stills.

In premiere you can right click the frames and set speed. Thats how I did all of my animations until I wised up to fraps

<center>http://www.blitzpigs.com/john/BP-johann-9-4-03.gif <center>