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Converting MPEG2 to MPEG4
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Nonus
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PostPosted: Fri May 13, 2005 4:18 pm    Post subject: Converting MPEG2 to MPEG4 Reply with quote

I have video taken from the input of my tv tuner card which is MPEG2, I want to convert that into a format that I can use in iMovie. The best format to convert too would be DV but I would settle for MPEG4.

I can use ffmpeg to extract the sound and convert the video but is it possible to keep the A/V together in the conversion?
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NeddySeagoon
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PostPosted: Fri May 13, 2005 4:19 pm    Post subject: Reply with quote

Nonus,

You probably want transcode.
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Nonus
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PostPosted: Fri May 13, 2005 5:03 pm    Post subject: Reply with quote

Okay, transcode is now installed and I cringed at the man pages.

Any suggestions for how to attack this task?

I just want it to convert the mpeg2 to mpeg4 with nothing really special unless there is a couple filters that will clean the picture up a bit, since the input will be from VHS.
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polle
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PostPosted: Fri May 13, 2005 5:10 pm    Post subject: Reply with quote

can't you do that with avidemux2?
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dee2
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PostPosted: Fri May 13, 2005 5:22 pm    Post subject: Reply with quote

Sorry I don't have any transcode magic for that particular task, but if you want to give mencoder a go try with

Code:
mencoder infile.mpeg -oac mp3lame -lameopts cbr:preset=128 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=5000 -o out.avi



I will also vote for avidemux2, lovely program.
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Nonus
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PostPosted: Fri May 13, 2005 6:53 pm    Post subject: Reply with quote

Well there are 3 programs mentioned what would be the best?

I dont need any compression of any kind just need to put the mpeg2 into a format that Quicktime can read. There is a mpeg codec pack for Quicktime but its 20US.
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lusken
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PostPosted: Fri May 13, 2005 7:23 pm    Post subject: Reply with quote

This might be a false clue, but I think projectx is made to convert tv-tuner signals to "something else". it's in portage so it should be easy to check out..

good luck
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dee2
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PostPosted: Fri May 13, 2005 8:05 pm    Post subject: Reply with quote

Nonus wrote:
Well there are 3 programs mentioned what would be the best?

I dont need any compression of any kind just need to put the mpeg2 into a format that Quicktime can read. There is a mpeg codec pack for Quicktime but its 20US.


I think you do need compression or you will end up with insane big files :-)
Did you try the mencoder line I gave you?, it should do a pretty good job, avidemux2 has a nice GUI that will make it easy for you, but I don't think it can export DV though.
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Nonus
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PostPosted: Fri May 13, 2005 8:37 pm    Post subject: Reply with quote

Ill be trying the mencoder line in a bit, just have to recompile mplayer with the encode flag.

For DV, iMovie converts it when you import a video into it, was just trying to kill 2 birds with one stone and go straight to DV but its not important. Also whats the point of having a large hard drive if you arnt going to be using it. Why would you want to compress a video from VHS, its crappy enough as it is.
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