Dik, Sorry, I made a mistake in the first example (untested code, you know). I tested this one, it works:
#!/bin/python import mpeg,sys in_filenames=sys.argv[1:-1] out_filename=sys.argv[-1] in_mpegs=map(mpeg.MpegFile,in_filenames) reduce(lambda a,b: a+b, in_mpegs).to_file(out_filename) On Mon, 13 Dec 2004 23:10:17 -0600, Mark Rages <[EMAIL PROTECTED]> wrote: > On Tue, 14 Dec 2004 00:26:36 +0100 (CET), Dik Takken > <[EMAIL PROTECTED]> wrote: > > On Mon, 13 Dec 2004, Mark Rages wrote: > > > > > It is also possible to do simple cut/paste editing on MPEG without > > > re-encoding. I have a Python library for doing so: > > > > > > http://mlug.missouri.edu/~markrages/software/python_mpeg/ > > > > Wow, that looks interesting. Too bad I don't know any Python. Can this > > thing join MPEG2 files in a way that does not confuse any set-top DVD > > players? DVDAuthor can also join MPEG2 files, but some DVD players choke > > on it because it's not done proper. I guess it's done proper once you > > can't distinguish an MPEG2 stream that has been split and re-joined > > from an MPEG2 stream that hasn't been touched. > > Limitations: > 1) The library only works with elementary stream files. That means > you'll need to demux. > 2) Audio must be in .wav format. I don't know how to split mp3 and > ac3 at arbitrary frame points. Audio should have the same name as the > MPEG file, but a .wav extension. > > > Could you tell a bit more about this python library? Would it be difficult > > to write a basic commandline front end that can join two MPEG2 files, or > > split a stream at a certain frame (or nearest GOP border)? > > Here's one that will join MPEG2 files: > > #!/bin/python > import mpeg,sys > in_filenames=sys.argv[1:-2] > out_filename=sys.argv[-1] > > in_mpegs=map(mpeg.MpegFile,in_filenames) > reduce(in_mpegs).to_file(out_filename) > > Here's one to split a stream at a frame: > > #!/bin/python > import mpeg,sys > in_filename, splitpoint, out_filename1, out_filename2=sys.argv[1:] > > m=mpeg.MpegFile(in_filename) > m[:splitpoint].to_file(out_filename1) > m[splitpoint:].to_file(out_filename2) > > There's an example on the web page I think. > > Regards, > Mark > [EMAIL PROTECTED] > ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
