how do i synch video movements with audio

[jugalo180]

i want to make a music video using materials from like four different music videos, but i want to synch there movements to the downbeat of my music. like if i had a clip of someone dancing i want to be able to make them dance on beat, and if they were waving their arms i would like to be able to put that on beat. i hope i am clear enough with my question. any tutorial links would be greatly apreciated. i looked in the manual, but i still can't figure out how to do this.

thanks in advance

 

[AlChuck]

Well, you could do this by careful speeding up and slowing down of the video, but it's bound to appear unnatural (like in all those car ads where the car whipping down the street suddenly is in slow-motion). Perhaps that's an effect you want. But if you want to make it look natural your best bet is to mess with the music's tempo. In either case the tempo of the dancing and of the music would probably need to be pretty close in the first place for this to succeed without either looking fake or sounding odd.

 

[jugalo180]

yeah

the effect of the car slowing down is the type of effect i'm looking for. i don't want the whole thing to be synched up, but i would like a movement synched with the downbeat, let's say every 10sec, and the slowing down or speeding up effect is what i'm looking for. can you shoot me to a tutorial on this? i can't really follow allong in the manual, i need instructions tailor made for this particular application.

 

[drstawl]

i want to make a music video using materials from like four different music videos, but i want to synch there movements to the downbeat of my music. like if i had a clip of someone dancing i want to be able to make them dance on beat, and if they were waving their arms i would like to be able to put that on beat.

thanks in advance

Vegas Video has a great facility for this.

You expand the audio and the video tracks until you find the peak that corresponds with the beat you are looking for. At this level of magnification each frame of the video is depicted in the video track window; slide one to match the other.

 

[drstawl]

Re: yeah

the effect of the car slowing down is the type of effect i'm looking for. i don't want the whole thing to be synched up, but i would like a movement synched with the downbeat, let's say every 10sec, and the slowing down or speeding up effect is what i'm looking for. can you shoot me to a tutorial on this? i can't really follow allong in the manual, i need instructions tailor made for this particular application.

Your best bet wouyld be to hack out frames that make the video late until it's on time- that would create a jumpy effect.

 

[jugalo180]

thanks

what i've done so far was duplicate the original video track. i muted the original. i hacked away some frames to to make it synch to the down beat of the music. it's giving me this cool jumping effect, like on horror movies when they blink their eyes and the creature appears closer. thanks for that advice. i'm going to read this manual and see if i can figure out how to synch to time, i wonder if it's possible where i can place a marker and put some frames inside of the marker and the frames have to adapt to the frame rate inside of the markers whether it's a slow or fast frame count.

 

[jugalo180]

ok

i think i found something, i'm reading about velocity. it's talking about setting keypoints and speed within those keypoints.

 

[jugalo180]

compression

i'm now trying to figure out how to compress but still maintain some decent quality.

i have compressed to
cinepak's codec
12 fps
0909 pixel aspect ratio
width 240 height 180
audio is mp3 56kb 2400hz stereo

i need to find out some better compression techniques. music videos that i download from online has a lot better quality and still has around a 35mb file size. i can't seem to have that quality unless i'm rendering it at an 80mb file size.

is there better software that will take the huge avi that was created from vegas and further compress with very little loss in quality?

do i have to convert the avi into an mpeg for better compression?