Need Help re-encoding a .mov file

[pifemaster]

Hello,

I have a :13 second .mov video clip with a transparent background (alpha layer). This clip is going to be used as a lower third on my videos. However it was encoded at 30fps and I would like to re-encode it to 60fps. I am wanting to do this so I can drop it onto my 60 fps timeline without having to deal with it not matching the timeline.

What format can I re-encode this to in order to retain the alpha layer and loose no quality?

PS. it is supposedly a QT JPEG 2000 (whatever that means)

Thank you,
Robert Pfeifer
Pifemaster Productions
www.pifemaster.com

 

[PDR]

I have a :13 second .mov video clip with a transparent background (alpha layer). This clip is going to be used as a lower third on my videos. However it was encoded at 30fps and I would like to re-encode it to 60fps. I am wanting to do this so I can drop it onto my 60 fps timeline without having to deal with it not matching the timeline.

What format can I re-encode this to in order to retain the alpha layer and loose no quality?

PS. it is supposedly a QT JPEG 2000 (whatever that means)

You can use quicktime animation codec (MOV), or a png sequence, but it's probably unnecessary for what you are doing


"Converting" it to 60p doesn't make it a real 60p clip. Your animation will still be 30p, and only has half the frames necessary for a real 60p animation

If you drop the original clip on a 60p timeline, the duration will be the same, 13 seconds, but twice the number of original frames . Those extra frames are generated either by duplicating or blending frames. If you have frame blend on for the clip, every 2nd frame will be a duplicate. If you have frame blend on, every 2nd frame will be a blend . Eitherway the motion, will not be as smooth as a true 60p animation

There are other methods to convert to 60p, such as interpolation (e.g. twixtor, after effects pixel motion, timewarp, kronos) , which synthesize new "inbetween" frames, and the motion is smoother - but the new frames are often plagued with morphing artifacts (it's very source dependent)

Alternatively you can interpet the footage as 60p in the clip bin (right click the clip in the clip bin) . This means same number of original frames, but it will play faster at 60p or 2x , ie. 1/2 the duration , or 6.5 seconds long - it depends on what you're planning to do

 

[pifemaster]

You can use quicktime animation codec (MOV), or a png sequence, but it's probably unnecessary for what you are doing


"Converting" it to 60p doesn't make it a real 60p clip. Your animation will still be 30p, and only has half the frames necessary for a real 60p animation

If you drop the original clip on a 60p timeline, the duration will be the same, 13 seconds, but twice the number of original frames . Those extra frames are generated either by duplicating or blending frames. If you have frame blend on for the clip, every 2nd frame will be a duplicate. If you have frame blend on, every 2nd frame will be a blend . Eitherway the motion, will not be as smooth as a true 60p animation

There are other methods to convert to 60p, such as interpolation (e.g. twixtor, after effects pixel motion, timewarp, kronos) , which synthesize new "inbetween" frames, and the motion is smoother - but the new frames are often plagued with morphing artifacts (it's very source dependent)

Alternatively you can interpet the footage as 60p in the clip bin (right click the clip in the clip bin) . This means same number of original frames, but it will play faster at 60p or 2x , ie. 1/2 the duration , or 6.5 seconds long - it depends on what you're planning to do

PDR - Thank you very much for the information. That was exactly what I was looking for. I did encoded it using the quicktime animation codec you mention. I realize that although my clip is now a 60p clip, it is not a true 60p clip. The clip is just a lower third graphic that slides into position, so the motion is very limited and after the conversion it looks just as good as the original. Since I will be using this clip quite often, I can now just drop it on my timeline and keep working.

Thanks again!

Thank you,
Robert Pfeifer
Pifemaster Productions
www.pifemaster.com

 

[PDR]

ok - but did you understand the implications of converting it to "60p" ? It will be about twice the size if you use an intra frame codec like animation codec .

It would be easier to to keep it 30p and just use one of the methods described above (e.g. place the 30p clip on a 60p timeline with frame blend off) . It will produce exactly the same thing and you don't need 2x storage space

 

[pifemaster]

I actually saved both the original 30p version and the new 60p version. When I work on my next video, I plan on trying it using both options to see which way is going to work better and be the most efficient.

I appreciate you taking the time to explain everything. I think I understand everything now.

Thank you,
Robert Pfeifer
Pifemaster Productions
www.pifemaster.com