Resize video with ffmpeg...

[bla4free]

Hi. I'm trying to convert my avi videos to flv videos. I can convert them successfully from the command. Now, I want to be able to resize my videos to make them smaller. Is there a way to tell ffmpeg to resize my videos so they're no larger than 400 px wide? I couldn't find an option for this. Is there a better tool than ffmpeg that can accomplish this, that is also a command line tool? Thanks!

[brassplyer]

Is there a better tool than ffmpeg that can accomplish this, that is also a command line tool? Thanks!

Winff is as I understand a gui for ffmpeg that also gives you a command line option. However, I believe the size option command is -s

[bla4free]

Thanks for the response. I know the -s will let you set the size; however, I only wanted to set the maximum width. The -s option required ###x###. I only wanted to set a max width.

[45tripp]

no,
can't do that.

use mencoder,

for a ffmpeg gui look to Avanti

tripp

[bla4free]

I don't need a front-end for ffmpeg--I only needed a way to set a max width. We have a process that runs at night that will convert all of our interviews to flash. I looked at mencoder; however, I need something that will run on windows. Thanks!

[Midzuki]

But Mencoder DOES run under Win32.

[bla4free]

But Mencoder DOES run under Win32.

You're right. When I clicked the mencoder link in the post, it said it was for Linux in the description. So I only assumed.... I'll give this a try. Thanks!

[thymej]

add -s WWWxHHH where WWW is the width, HHH is the hight. If you wanted to make the size 320x200 then do the following

ffmpeg -Your_first _options -s 320x200 -More_of_your_other_options

ThymeJ

[bla4free]

Do you know of any examples to convert an avi to flv with mencoder? I looked at their site but the options overwhelm me! Thanks!

[45tripp]

i might
https://forum.videohelp.com/topic336882.html

[Megahurts]

for a ffmpeg gui look to Avanti

tripp

Is Avanti still available? Can't seem to find it.

[45tripp]

why don;t you click on it?

alive and thriving

[Megahurts]

Thanks tripp.... I was clicking on the right side of the page.

[Geremia]

Is there a way to tell ffmpeg to resize my videos so they're no larger than 400 px wide?

Yes:

ffmpeg -i input.avi -vf scale="'if(gt(iw,400),400,iw)':-1" output.flv

(sources: this & this)

iw = input width
-1 = whatever height preserves the aspect ratio