Re: generate mov/mpg from mpg

Subject: Re: generate mov/mpg from mpg

From: "Thomas Loder" <email@hidden>

Date: Mon, 17 Oct 2005 17:59:46 +0200

Delivered-to: email@hidden

This is a follow-up to my initial mail. For further scrutiny this is the code in question.

It works fine with QT movs but not with mpg neither as source nor as destination. It would be cool to at least have an mpg as input file, mov as output is ok.

// one piece of the source movie is extracted and inserted into the destination copiedMovie

    public void doCopy(String srcFile, int start, int duration) throws QTException {
        copiedMovie = new Movie();
        OpenMovieFile omf = OpenMovieFile.asRead (new QTFile(new File(path + srcFile) ) );
        movie = Movie.fromFile (omf);

        movie.insertSegment (copiedMovie,
                             start, //startTime
                             duration, //duration in ms
                             0); //startTime in other movie
    }

// dest copiedMovie is saved

    public void doFlatten(String dstFile) throws QTException{
        file = new QTFile(new File(path + dstFile) );

      copiedMovie.flatten(StdQTConstants.flattenAddMovieToDataFork |
                          StdQTConstants.flattenForceMovieResourceBeforeMovieData,
                          file,
                          StdQTConstants.kMoviePlayer,
                          IOConstants.smSystemScript,
                          StdQTConstants.createMovieFileDeleteCurFile,
                          StdQTConstants.movieInDataForkResID,
                          null
      );
    }

Hope somebody can help me out

Thomas

----- Original Message -----

From: Alex Shaykevich

To: Thomas Loder ; email@hidden

Sent: Monday, October 17, 2005 2:55 PM

Subject: Re: generate mov/mpg from mpg

That's right Thomas. QT's support for mpeg is limited to mpeg1 and is limited in general, though I'm not sure why the scenario you describe shouldn't work, in theory at least. Hard to say what's going on without seeing your code. Why don't you post the relevant snippet to the list.

Good luck.

--Alex

Thomas Loder <email@hidden> wrote:

Hello Everyone,

I am new to this list and new to QTJ.
I hope someone can help me with this problem.
I'd like to copy a piece of a movie and generate a new movie (rather mpg
than mov) from it using insertSegment() and flatten(). This part works fine
as long as I'm dealing with qt movs. As soon as I take an mpg movie as
source it screws up. I only get the first frame in my destination movie.
Maybe it's got something to do with the StdQTConstants. Or is it a general
shortcoming that QTJ doesn't support MPEG?

Many thanks in advance
Thomas

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References:

>Re: generate mov/mpg from mpg (From: Alex Shaykevich <email@hidden>)