linuxgeek: Re: [LINUX_Newbies] more questions about videos thank You to Scott

Friday, January 22, 2016

Re: [LINUX_Newbies] more questions about videos thank You to Scott

good morning
thank You.

Am 16.01.2016 um 15:12 schrieb Scott scottro@nyc.rr.com [LINUX_Newbies]:
> On Sat, Jan 16, 2016 at 11:02:49AM +0100, 'highskywhy@yahoo.de'
> highskywhy@yahoo.de [LINUX_Newbies] wrote:
> >
> > Questions:
> > > Stream #0:0: Video: h264 (High) (H264 / 0x34363248), yuv420p, 720x576
> >
> > Is this the most important line for my problem?
>
> Yes, that is referring to the codec of the video. (In this case, x264)
*
OK
so
can I do those things:

Stream #0:0: Video: h264 (High) (H264 / 0x34363248), yuv420p, 720x576
Make the quality of every picture worse by reduce the size of picture?

Is it possible to split every ṕicture of a video.

Example

11111
22222
33333
44444

You can see this picture during 2 minutes video.

can ffmpeg do that?

11111
22222

and the other things are destroyed

or can
split ffmpeg

11
22
33
44
55

and can I make with ffmpeg out of a 2 minutes video an one hour video
by making copy paste 59 times like a time loop?

>
> > So
> > the picture of the movie is 720 to 576.
> >
> > Is this right?
> >
> > Can I convert
> >
> > sophie.wmv to sophie2.wmv with 360 to 288 and
> > then I have a smaller video mit worse qualitiy?
>
> Yes, you would use -s 360x288 for size. The quality would probably be
> poorer.
>

OK.

My questions:

I can convert a pic from 300 dpi to 100dpi
and can I convert a video to any size or are there some sizes only possible?

Question:
Here is a video a.avi with 1 GB
now I reduce the size of the picture to 25% and same avi-container.

Is now the space for the file 250 MB or less and the sound is the same?

Regards Sophie