cutting movies within gbpvr

[dottore]

i think the code for getting still pictures from a mpeg2-movie would be quite interesting for all of us including reven. i was searching around and found some directx code for .net including grabbing and playing of mediafiles. i am now trying to load a mpeg2-movie and make a thumbnail at a given position.
but if collin has some code for this, it would be nice, if we could have a look at it...

that would be the best, so no other software is used. the mplayer-way is too complicated and slow.

[jorm]

My idea was we would send in a bunch of points the mpeg would be loaded once and would extract lets say the 10 frame pictures. We would then show them to the user and they can zoom in on any one of the 10, lets say in 1 minute intervals. Narrowing down if they want or move x frames per click. Marking the commercials.

I agree about the mpeg2 extraction code. If we can use it we can do things like in xrecord have scene selection for a given show. (sub would have to add a play from frame offset).

It is one of the features gbpvr should have.

[jorm]

I just tried the mplayer call that was posted here, it generates an image, however if I delete the image and change the seconds it returns the same image.

[jorm]

I got really bored last night and figured out how to extract images from movies (avi, divx, mpeg) in C#.

So lets figure out what kind of interface we need for the extraction tool and the plugin.

Extraction tool
extract single frame
extract list of frames from file one frame number per line
extract the total number of frames.
extract the video formatting information (not really needed)

[reven]

I got really bored last night and figured out how to extract images from movies (avi, divx, mpeg) in C#.

So lets figure out what kind of interface we need for the extraction tool and the plugin.

Extraction tool
extract single frame
extract list of frames from file one frame number per line
extract the total number of frames.
extract the video formatting information (not really needed)

you want to throw this into a helper dll so every plugin can access this? im still unable to capture a frame from an mpeg2 file. all i would need from this helper dll would be something like

Code:

public Image GetFrame(string videofile, float frame)

would be handy to have.

[jorm]

I dont think I can easily make a dll for it. Since it is in a form and I have to add form components to it. I was going to do it as an executable that plugins could call.

getframe -single c:\xx.mpg frameNumber outputname

or

getframe -file c:\xx.mpg c:\filelist.txt outputname (to export multiple frames)

[dottore]

I dont think I can easily make a dll for it. Since it is in a form and I have to add form components to it. I was going to do it as an executable that plugins could call.

getframe -single c:\xx.mpg frameNumber outputname

or

getframe -file c:\xx.mpg c:\filelist.txt outputname (to export multiple frames)

how is that going? is there something, we could try out?

[jorm]

The reason I did not publish it is I ran into a problem and did not have time to figure it out. I can post the code. It does extract the frame and if you say

getframe x.mpg 1 (first frame) it is really quick. But takes considerably longer as the frame number grows. I will post the code and see if another pair of eyes can reveal the problem. Anyone know directx?

[dottore]

yes, please post the code. i would like to have a look at it.

[jorm]

I havent found my attempt at it yet but this is where I stole the code from

http://www.codeproject.com/cs/media/pict...mmovie.asp