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

Tuesday, January 12, 2016

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

thank You for help.

More:

> > We play theatre.
> > So my file made here in Germany should run by www to our friends in
> > America and Asia and Africa.
> > So they not can use Linux or Win10
> > some use win 98 or older.
> > So the thing is
> > files should not be good by quality
> > because the file is a log not a vidoe.
> > Like a storyboard.
>
> Ok, that can make things easier.

Thank You.

>
> > >
> > > However, I tried encoding it with libx264.
> > >
> > > You can download it at http://srobb.net/sophie.wmv.
> > I ll send that to Lima
> > and then I ll ask Sarah,
> > she can read the video
> > and then I ll tell You.
> >
> > Can You see
> > our origin is much bigger than the aim.
> > quality is worse but good enough for us.
>
> It was hard to tell quality, as it was a three second file of a background.

Im sorry.

I dont want to waste engery for upload or download.

> :) Your origin file is 2.2M. Your aim file is 56K. The file I created
> was 876K, bigger.
>
OK

> >
> > We dont need wmv but
> > a codec for also old computers.
> >
> >
> > >
> > > If that works for you, then you can encode any of these with
> > >
> > > ffmpeg -i myfile.mpg -c:v libx264 a:wmav2 myfile.wmv
> > THANK YOU!!!!
> >
> > I am sure
> > reading the manual of ffmpeg I ll can find the meaning of the -i or c:v.
> >
> The ffmpeg man pages aren't that good, often leaving things out or giving
> explanations that aren't that clear.

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.
But new commands like ffmpeg are to complicated to study them by man.

ffmpeg -i (the -i is for input file,
> meaning the file you are re-encoding. I also made a typo in the command
> above. The -c:v means video codec, you can also use -vcodec and the a that
> I have afterwards is my typing mistake. It should either be -c:a wmav2 or
> -acodec wmav2, either one should work.
**
Thank You.

>
> So, where I wrote:
>
> > > ffmpeg -i myfile.mpg -c:v libx264 a:wmav2 myfile.wmv
>
> It should be
> ffmpeg -i myfile.mpg -c:v libx264 -c:a wmav2 myfile.wmv
>
> Or to make it easier to understand
>
> ffmpeg -i myfile.mpg -vcodec libx264 -acodec wmav2 myfile.wmv
> >
*
I ll print that all and study it slowly.

>
> > Please dont hurry.
>
> No problem, it's pretty easy, as I used to work with it a lot.
>
> 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?

>
> ffprobe -hide_banner sophie.wmv
> Input #0, asf, from 'sophie.wmv':
> Metadata:
> encoder : Lavf57.20.100
> Duration: 00:00:03.92, start: 0.037000, bitrate: 1823 kb/s
> Stream #0:0: Video: h264 (High) (H264 / 0x34363248), yuv420p, 720x576
> [SAR 16:15 DAR 4:3], 25 fps, 25 tbr, 1k tbn, 50 tbc
> Stream #0:1: Audio: wmav2 (a[1][0][0] / 0x0161), 48000 Hz, 2 channels,
> fltp, 128 kb/s

**
This was the thing I was looking for.
Thank You.

I ll send You more details now about our files.

>
> > >
> > > 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?

regards
Sophie