Friday, January 22, 2016

Re: [LINUX_Newbies] how to learn to convert a video HELP from Scott inside Videofiles

 

good morning

thank You for help

> >
> > I dont want to waste engery for upload or download.
>
> No problem. As long as you can tell from the file whether it's working or
> not, it is sufficient. (If we get it working, I'd love to see one of the
> stories though.)

I send later a longer video
but not as a file but as a url.

>
> >
> > Im sorry
> > We are using Linux now for 4 years
> > never a man could help
> > but
> > when we know a command like ls
> > then we read the man.
>
> That is frequently the case.

**
Thats it.
So does anybody know a workshop teaching ffprobe or ffmpeg

The documentation is getting better and
> better, but man pages can often be complex. There are various ffmpeg
> tutorials around. One problem is that the developers frequently change
> options, sometimes making it easier, sometimes harder. Generally, if I'm
> trying to do something with ffmpeg, I will google the topic and can usually
> find a tutorial that explains that particular part.
Thank You.

>
> > >
> > > ffmpeg -i myfile.mpg -vcodec libx264 -acodec wmav2 myfile.wmv
> > > >
> > *
> > I ll print that all and study it slowly.
>
> The most basic ffmpeg command is ffmpeg -i myfile.something
> myfile.somethingnew
*
OK

>
> The -i is for the input file. If you want to convert, for example, an mkv
> file to an mp4 file, you can just do ffmpeg -i myfile.mkv myfile.mp4. It
> will convert the format. Generally, one does specify things like codec as
> we've been doing with your files but if you don't specify, it will usually
> just copy it.
>
> > >
> > > To get bit rate and such, you can run the command
> > >
> > > ffmprobe -hide_banner myfile.wmv, which gives a lot of information
> >
> > This command can anylyse any video file like avi or mp4 or wmv?
>
> Yes (and audio files as well).
OK

The task is: ffmprobe.

(Every Linux does know that?)

>
> > > > > D.V.L. wmv3 Windows Media Video 9
> > > > >
> > > > > D meaning that it can decode, but as there is no E, it means it
> can't
> > > > > encode it.
> > > > >
> > > > > That is a deprecated video format, and I think there may have
> been an
> > > > > ffmpeg patch for it years ago, but I can't find it.
> > > > >
> > > > > --
> > > > YES
> > > > thats it.
> > > > Our wmv is deprecated.
> > >
> > > Even so, it seems that at least some versions of ffmpeg can encode it
> > > something else.
> >
> >
> > What is the meaning of
> >
> > "some" versions?
>
> It seems that each version of Linux has its own version of ffmpeg, and one
> can also just build ffmpeg from source. However, doing some more looking,
> it seems as if encoding to wmv3 would be difficult, so if the other format
> I mentioned in the later email works, use that.
>
But isnt there a general way to use it?

Regards Sophie

>

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