On 3/24/08 10:20 AM, Andrew Johnson wrote:
> Does anybody know if it's possible to transcode RealVideo files into any
> widely used non-proprietary formats, and if so what tools I need to do
> that?
>
> Thanks,
>
> - Andrew
Hi, Andrew.
I think the software FFmpeg <http://ffmpeg.mplayerhq.hu/> would be able
to transcode RealVideo to a format of your choice (I haven't actually
tried doing this though). Of course, you would almost certainly be
making a lossy copy of a lossy copy at that point, so if you have higher
quality source video, it would be better to use that as your source when
transcoding to a new format.
As far as formats go, Flash Video may be a good choice from the
standpoint of being a widely used and supported format. For example,
YouTube uses this format. It would require a Flash Video player (e.g.
Adobe Flash Player plug-in for a web browser). A large percentage of
existing web browsers already have an Adobe Flash plug-in. However, I
believe Flash Video normally uses a proprietary codec, so if you truly
want a non-proprietary format, Flash Video won't work.
One non-proprietary video codec is Theora <http://www.theora.org/>. It
is usually used inside an Ogg container format. Wikipedia uses Ogg
Theora for their video content:
<http://en.wikipedia.org/wiki/Wikipedia:
Creation_and_usage_of_media_files#Video>
Unfortunately, this format is not supported by default on many
platforms. Wikipedia's Media help page talks about this and provides
instructions for installing software to play this format:
<http://en.wikipedia.org/wiki/Wikipedia:Media_help>
Lewis
--
J. Lewis Muir
Software Engineer
CARS/IMCA-CAT
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