[GTALUG] ffmpeg question

[John Moniz]

On 11/19/2014 11:37 AM, Zbigniew Koziol wrote:
> Hello,
>
> For some here the answer will probably be know right away. That is why 
> I am writing, after long googling.
>
> I would like to create a sort of video presentation from images. 
> However, I would like that every slide (image) is displayed for a 
> different time duration. This is just the first step; next i would 
> like to combine voice with that, but it is probably another problem, 
> for later.
>
> Hence, I have a sequence of images y-%2d.png
>
> The following works for me:
>
> ffmpeg -framerate 1/10 -i y-%2d.png -c:v mpeg4 -vf 
> "fps=2,format=yuv420p" out.mp4
>
> And the following works, too:
>
> ffmpeg -r 1/2 -start_number 7 -i y-%2d.png -c:v mpeg4 -vf 
> "fps=2,format=yuv420p" out.mp4
>
> However, how to control the time of displaying individual images? Is 
> that possible at all?
>
> I thought that something like this may work:
>
> ffmpeg -r 1/5 -i y-01.png -r 1 -i y-02.png -c:v mpeg4 -vf 
> "fps=2,format=yuv420p" out.mp4
>
> It does not. The first image is displayed, only.
>
> Kind regards from Poland,
> zb.
>
I have used PhotoFilmStrip and also Imagination. One of them does the 
individual time duration, can't remember which.

John.