time re-maping

Post by **Ron P.** » Fri Mar 30, 2007 11:44 am

It probably is a nice feature (in both programs) if you recorded sports car race, or fast moving boats. The effect kinda spices up what can otherwise be a boring thing to re-watch.

I did however use the variable speed on a clip of my granddaughter sliding down the slide on her swingset, landing in a mudpuddle. The slow-mo showing the muddy water splashing...

heinz-oz · Post by **heinz-oz** » Sat Mar 31, 2007 12:51 am

You misunderstood me Ron. I have used slow mo also on many an occasion as I have used a speed up. Would it really matter to you, if the resultant clip was a little longer in duration or shorter in case of a speed up?

That¡¦s what I meant with my comment. I don¡¦t need to buy an expensive program for that ¡§feature¡¨, surely

Post by **Ron P.** » Sat Mar 31, 2007 12:56 am

No, I also would not buy it for that feature alone. To get into that program I'd have to have a pile of money to throw away, just like my friend that uses it. He spent over $10K (US) just on the machine, and had a company set it up, making sure the software matched and worked well with it, AND he's just a hobbiest, and may occassionally tinker with video.

But he seems to be sold on it, and has tried a couple of other programs too..

johnsweet · Post by **johnsweet** » Sun Apr 01, 2007 6:53 am

hi guys,

sorry for the late entry....

I have tried the variable speed in MSP but after encoding I could not see any speed difference at all....can anybody explain in detail..

I don¡¦t mind about clip length (even if will short or long) at all after re-map as I am not going to use the same audio at all. I preferred to put different music score along with clips...

Thanks

Devil · Post by **Devil** » Sun Apr 01, 2007 8:15 am

Put a trial clip on your timeline, select it, and start up the variable speed on it. You will see a small keyframe controller appear. Pull the cursor along to, say, about 1/3 the distance and hit the tiny + icon and you will see a new keyframe appear at that point. Adjust the speed to, say, 500%. Do the same to about half way and adjust to the same %. Then go to 3/4 of the way, add another keyframe and adjust to, say, 25%.

When you play the clip, it will start at real speed, accelerating rapidly to 5x real speed, stay there until halfway, then slow down and finally end up at real speed.

neonbob · Post by **neonbob** » Sun Apr 01, 2007 2:25 pm

heinz-oz wrote: Any movement is bound to be blocky because intermediate frames only repeat the previous one. There is no data contained in your video to generate these frames with a partially advanced move for moving objects. Similarly, when discarding frames, the incremental movement data of the discarded frames is lost. More expensive programs may have better algorithms to generate intermediate frames when slowing down a clip.

This is not true. I have several more expensive NLE's and they do a beautiful job at fast/slo mo. It comes out looking the same as analogue with no increase/decrease in length. You can even go from FORWARD fast to slow, to REVERSE slow to fast (or which ever way you want) with silky smooth playback. You can go from fast to slow by EITHER splitting the video, or using keyframes to change the speed in a single clip without splitting. Canopus can do this, vegas, Liquid (these are the ones I have) but I also believe adobe's premiere pro can do it.

johnsweet · Post by **johnsweet** » Tue Apr 03, 2007 6:58 am

first up all I thank you mr.devil.. I tried variable speeds. that work fine.
secondly I agreed with Mr.neonbob, that there are many software
that can produce fast or slow motion with smooth play back.( off course most of them are very expensive software).

Devil · Post by **Devil** » Tue Apr 03, 2007 7:13 am

Fixed speed slow motion with multiplication/division by integers is OK in MSP but there is no interpolation. There are expensive interpolating softwares available; these generate intermediate frames, instead of duplicating them.

johnsweet · Post by **johnsweet** » Wed Apr 04, 2007 7:00 am

if forum permit ,can you advice the software's names which will do interpolating in better way?

Gorf · Post by **Gorf** » Wed Apr 04, 2007 10:28 am

I don't think there's any problem mentioning other software on the forum, if it's not software that competes directly. You need something like Dynapel's "MotionPerfect" or similar.

johnsweet · Post by **johnsweet** » Wed Apr 04, 2007 1:19 pm

I had bad experience with MotionPerfect. it take ages to convert little clip...means its rendering time is too long ..if we have lot of patience then only can go for that. any other software can you suggest?

Thanks

MrA · Post by **MrA** » Thu Apr 05, 2007 4:04 am

Just curious, anyone know how MSP handles speed changes in the clips?

As far as I know, correct me me if I am wrong, to slow down a clip, MSP generates MORE frames of that clip, hence, a longer clip.

In speeding up a clip, it will delete frames... Is this correct?

Is the explation in the book, 'Getting the most out of Media Stuidio Pro" wrong?

johnsweet · Post by **johnsweet** » Thu Apr 05, 2007 7:01 am

I had same question and got solved the problem with MSP8, you can check mr.devil posting same page..MSP8 doing that job very well..
if you cannot find check the below link.

http://phpbb.ulead.com.tw/EN/viewtopic. ... 816#109816

Gorf · Post by **Gorf** » Thu Apr 05, 2007 11:18 am

johnsweet wrote:I had bad experience with MotionPerfect. it take ages to convert little clip...means its rendering time is too long ..if we have lot of patience then only can go for that. any other software can you suggest?

No. MotionPerfect tracks features in the clip frames and uses those to attempt to accurately interpolate the inbetweens. The easiest shots for it to tween would be a panning shot with no other movement, or a static shot with a single moving object. As the shot gets more complicated, the time taken to change its speed will increase. Obviously this is further affected by the duration of the clip, the factor by which you're changing the speed, and the CPU and memory speed/size.

There may be faster or better solutions out there - but their speed and effectiveness will be reflected in their price. Give us an idea of how much you are willing to pay for fast interpolation, and someone might be able to come up with a speedy solution that fits your budget.

MrAmigo2121 wrote:...As far as I know, correct me me if I am wrong, to slow down a clip, MSP generates MORE frames of that clip, hence, a longer clip.

In speeding up a clip, it will delete frames... Is this correct?...

If you specify that the clip is frame-based, MSP will work with complete frames, otherwise it works with fields, using the specified field order. To avoid jitter, you need to think about the frame type when you work out the best rate to use.
Slowing frame based, - any speed with a numerator of 1, e.g. 1/2x, 1/3x, 1/5x etc
Slowing field based, - any speed with a numerator of 1 and an even denominator, e.g. 1/2x, 1/6x, 1/8x etc
Speeding up either type, - any integer speed, 2x, 3x etc. Deinterlace field based.

Devil · Post by **Devil** » Thu Apr 05, 2007 12:04 pm

johnsweet wrote:I had bad experience with MotionPerfect. it take ages to convert little clip...means its rendering time is too long ..if we have lot of patience then only can go for that. any other software can you suggest?

Of course interpolation takes a long time to work. Just think about it. You have a clip of a fast-moving object with frames ABCDE and you wish to slow it down to, say, 13 frames AFGHIJKLMNOPE. Frame F has to be mathematically calculated to interpolate A with 5/13th of B; frame G with F +10/13th of B; H with G + 2/13th of C and so on, and this with about 400,000 pixels for each frame.

Yes, it can be done faster, possibly in real time, but you need a hardware converter. Let's see, do you have a spare $180,000 to buy one?