On 4/7/07, Alan Chandler <[EMAIL PROTECTED]> wrote:
On Saturday 07 April 2007 18:07, Joe Friedrichsen wrote:
> There are a few hints in the docs:
> http://cvs.cinelerra.org/docs/split_manual_en/cinelerra_cv_manual_en_
>5.html#SEC63 ,
I had already read that quite carefully - but its quite confusing. For
instance it say audio formats are WAV, PCM, AIFF and AC3, but then it
talks about .mov format.
Yes, this is a fine distinction to make. mov/avi/asf/wmv are
containers not codecs. wav/pcm/aiff/ac3 are codecs not containers. An
avi can have any of a multitude of video/audio codecs. Some avis may
have DivX video with mp3 audio, others will have x264 video and ac3
audio, and there are heaps of other combinations. Filename extensions
typically don't tell you what kind of video and audio you actually
have.
It's like a lunch box: there's a container for your food (video) and
drink (audio). You can't really see what's for lunch until you open
it. And Cinelerra can be said to be a vegan -- she only likes some
kinds of foods and drinks, and only in certain kinds of lunch boxes
(you know, ones without animal byproducts :-).
mov and avi are good containers cinelerra. DV and pcm are good codecs.
These I know from experience.
Flash video and its container (flv) is not supported by Cinelerra,
afaik. You will need to transcode into some other container and
codecs.
ffmpeg -i youtube.flv -acodec ac3 -vcodec mpeg4 -y video.mov
or, failing that:
ffmpeg -i youtube.flv -acodec ac3 -vodec mpeg2video -y video.mpg
may help.
Joe
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