[libav-tools] Create mp from one single JPG file

Werner Detter werner at aloah-from-hell.de
Mon Aug 26 22:37:02 CEST 2013


Hi David,

loop was the trick :) Thank you :)



Am 26.08.13 21:41, schrieb David Fire:
> hi
> i think the trick is -loop 1
> i just tryed this and worked...
> avconv -y  -loop 1 -i snapshoot8.png -t 30 video.mp4
> the result is a 30 seconds long video with the same image... not very
> funny :P
> 
> 
> 
> 2013/8/26 Werner Detter <werner at aloah-from-hell.de
> <mailto:werner at aloah-from-hell.de>>
> 
>     Dear Libav-Community,
> 
>     I want to create a single MP4 video from just one JPG image. Well
>     that's working so far
>     _but_ I am not able to set the length of the mp4 video. For example
>     let's say I want
>     to create a video from image.jpg, the video shouls show this single
>     image for about,
>     let's say, one minute.
> 
>     I've tried so many stuff but just cant get this working, like
> 
>     avconv -y -r 1 -t 00:00:59 -f image2 -i image.png -vcodec libx264
>     -crf 18 -preset slower -vf scale=\"trunc(oh*a/2)*2:1024\" image.mp4
>     avconv -y -r 1/59 -t 00:00:59 -f image2 -i image.png -vcodec libx264
>     -crf 18 -preset slower -vf scale=\"trunc(oh*a/2)*2:1024\" image.mp4
>     ...
>     and so on
> 
>     The Video is created but it's onle 1 sec in duration. Please, can
>     you tell me what i
>     am doing wrong here? This drives me nuts :)
> 
>     Thanks,
>     Werner
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> 
> 
> 
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