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Converting QT mov to wmv problems

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Kaz Miley
Converting QT mov to wmv problems
on Oct 28, 2010 at 4:41:01 am

Hi there,

I am required to make wmv files on a daily basis for PC based clients, from a range of PAL source material - usually a standard def timeline using Apple Prores HQ codec, sometimes 1080i, sometimes other HD formats.

To convert I am using MPEG streamclip - setting fps to 25, using different output sizes and a range of bitrates, from 2500 to around 400 depending on the filesize output. Often I am required to crunch down the filesize to 5MB or under.

Most of the time this works out ok, however I am experiencing a sporadic problem on some shots - specifically the ones with fast motion - where the framerate drops right down during playback and the vision stutters.

A few times I have experimented with the framesize and making it smaller has helped... however on the latest vid no joy. The producer isn't happy sending the file in that state to client.

Any help is greatly appreciated, thanks!


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Chris Blair
Re: Converting QT mov to wmv problems
on Oct 29, 2010 at 1:41:49 am

Not sure I'm following. From my experience with MPEG Streamclip, and according to their website, it cannot export a file to windows media format.

The text below is copy/pasted directly from their site's description of the Mac version:

MPEG Streamclip can export formats to QuickTime, DV/DV50, AVI/DivX and MPEG-4 with high quality encoding and even uncompressed or HD video

It can import and play wmv files, but not export. I have a copy of the windows version on this PC and I just tried to it...no dice.

On the framerate issue, if you set a frame rate, your export shouldn't drop frames during sequences with motion. Are you sure that's what's happening? Bottom line, we need more specific and accurate information about your settings and what format you're exorting to.

Chris Blair
Magnetic Image, Inc.
Evansville, IN
http://www.videomi.com
Read our blog http://www.videomi.com/blog


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Craig Seeman
Re: Converting QT mov to wmv problems
on Oct 29, 2010 at 1:43:40 am

With Flip4Mac Studio series licensed, MPEGStreamclip can export to WMV so I'm guessing he's using that.



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Chris Blair
Re: Converting QT mov to wmv problems
on Oct 29, 2010 at 1:55:53 am

Yeah..I just read that on their site. Good call!

Chris Blair
Magnetic Image, Inc.
Evansville, IN
http://www.videomi.com
Read our blog http://www.videomi.com/blog


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