frame by frame editing

[king_azza]

how can i do frame by frame editing as in add something every few frames in a 50 second clip, for a scientific study?

[redwudz]

What format and what codec are you using for the clips?

[king_azza]

divx avi... want to add a picture every say 12 frames, for one frame. sort of like subliminal messaging, but for a scientific test in house

[mats.hogberg]

In VirtualDub, you can output each frame as an image. Add/edit frames at will using any graphics editor, then rebuild it as AVI from the image series.

/Mats

[king_azza]

is there any way of doing it without 1st stripping it to images? as its a clip of a friends episode?

[mats.hogberg]

50 seconds Friends clip? Seriously, no, I think you'll have to take it apart into individual images.

/Mats

[wwaag]

king_azza

An alternative is to import your file into an editing program like Premiere or Vegas. In the timeline, you can add whatever info you want as a video overlay or title for whatever duration you want. In other words, you create a "title" or "overlay" that has a duration of a single frame. IMO, this would be easier than doing it frame by frame in an external graphic app such as Photoshop. Just a suggestion.

wwaag

[Cornucopia]

This certainly sounds like something an AVISynth script could do well. Some caveats:

Obviously, if you insert pictures into the timeline of the clip, the audio/video sync will be off unless you add a corresponding audio segment = 1 frame of video. Could be silent, duplicate, etc. If you're not worried about sync, or if you don't need the audio, ignore this.

You probably want to have an interim format file to work with, one that uses intra-frame compression only, like DV or a lossless codec. Otherwise, you might have runtime decoding problems. DivX, as you know, uses intra- and inter-frame compression, so many of those frames are actually only "partial modifications" of previous frames. Convert first before running the script.

BTW, what kind of "science" is this?

Scott

[king_azza]

how the hell do i do it in premier? i tryed its so confusing

please someone help?
anyone got msn?

could do me a kwik walkthrough?

[Cornucopia]

1. Open Premiere
2. Import Media File (divx.avi)
3. Import Media Files (pictures)
4. DragDrop avi onto the timeline
5. Zoom in to 1 or 2 or 4 frames- view (bottom L corner of timeline)
6. advance X# of frames
7. Do "Razor Edit"
8. Load picture/whatever in source monitor (dragdrop), "Insert" (not "Overwrite") edit onto spot where razor edit was last parked.

Repeat 6-7-8 until finished.
9. Export Timeline as file.

If you need more detailed tute than that, you probably need to learn Premiere basics 1st (or Vegas, Virtualdub, etc)

Scott

[king_azza]

orite. tryed it, but when i razor then place the pic, the video doesnt come bak after it how do i do it?

[nikkio3000]

how do you extract frames in virtualdub?

[redwudz]

Video>Copy source frame to clipboard. Then paste it into a graphics program. I use VD Mod and Video>Snapshot source frame. It has a save function, so you don't have to use a graphics program, just create a filename, select the filetype and save.

[mats.hogberg]

...or if you want to grab every 10th frame, use Frame rate under video, select Decimate by: and enter 10, then Save image sequence under File.

/Mats