[FFmpeg-user] Time-lapse generation

[MailingLists - XYZ]

I followed your advice and recompiled ffmpeg with libx264 and, indeed, this version corresponding to the commit 155508c6e9 generated a correct file.

Thanks ! 


> On 25 Oct 2019, at 11:35, Moritz Barsnick <barsnick at gmx.net> wrote:
> 
> On Fri, Oct 25, 2019 at 10:59:27 +0200, MailingLists - XYZ via ffmpeg-user wrote:
>> 	ffmpeg -f image2 -r 5 -pattern_type glob -i '*[0-9].jpg' -vf "scale=1620:1080,format=yuv420p" -vcodec libx264 final.mp4
> 
> "-framerate" is preferred over "-r".
> 
>> Starting around the 8000th picture, ffmpeg started dropping frames and the behaviour continued up until the end of the file.
> 
> You should show us the complete, uncut console output of your command.
> 
>> My question is : how could I ask ffmpeg to not be bothered by the
>> pictures resolution changes and scale them according to the output
>> dimension, 1620:1080, even though input images might be smaller than
>> that ?
> 
> The command should be correct to achieve that.
> 
>> Following advice on Stack Overflow, I tried to modify the output
>> scale with "scale=1620:-2” instead of "scale=1620:1080” but nothing
>> changed, frames continued to be dropped…
> 
> Well, that's stupid advice, as 1080 is already divisible by 2.
> 
>> (I’m using ffmpeg 3.2.14 and I haven’t tried a newer version)
> 
> That's certainly not sufficient. What if this was fixed in the
> meantime? Kindly grab a newer version. E.g. for Linux, this site
> provides static builds:
> https://johnvansickle.com/ffmpeg/
> (Left column, "git master", please.)
> 
> Please do try that first, and come back with the results (including the
> console output).
> 
> Thanks,
> cheers,
> Moritz
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