[FFmpeg-user] {Spam?} Re: crop and fade

RAPPAZ Francois francois.rappaz at unifr.ch
Fri Nov 20 08:27:54 EET 2020

Am 19.11.2020 um 16:37 schrieb RAPPAZ Francois via ffmpeg-user:
>> Hi
>> I tried the fading between pictures and cropping to there original 
>> size (5152 x 3864), so that they are not distorted
>> ffmpeg -y -i %%02d.JPG -i SligoAir_WhiteBlanket.mp3 ^ -vf 
>> zoompan=d=10:fps=1,framerate=fps=25:interp_start=0:interp_end=255:scen
>> e=100 ^ -pix_fmt yuv420p -s 5152x3864 out.mp4
>> It seems that -s 5152x3864 destroy the fading effect achieved with the 
>> second line
>> How can I correct this ?
>You must bring all pictures to the same size _before_ you read them with FFmpeg.
>Re-scaling one image with FFmpeg:
>ffmpeg -i input.jpg -s 5152x3864 output.jpg
>Re-scaling all images with FFmpeg:
>I think that's only possible with a loop in a script. Too complicated.
>Re-scaling one image with IrfanView:
>Open the image, Image --> Resize/Resample, Save as...

But my individual pictures are already at 5152x3864. The problem is that when I do the above command without -s ...x... they are stretched in the horizontal axis
What should be the size to use for my pictures to be displayed  without distortion ?


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