[FFmpeg-user] Combining 24fps Video with 23.976fps Audio
Sam Logan
shapableline at gmail.com
Wed Oct 2 14:54:18 CEST 2013
On 9/24/13, Sam Logan <shapableline at gmail.com> wrote:
> On 9/20/13, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
>>> The atempo and the setpts filter should allow you to change
>>> the speed of the files:
>>> http://ffmpeg.org/ffmpeg-filters.html#setpts_002c-asetpts
>>> http://ffmpeg.org/ffmpeg-filters.html#atempo
>
> One more question on this topic: would it also be possible to also
> change audio speed with
>
> -filter:a aresample
>
> I ask because the documentation at
> http://ffmpeg.org/ffmpeg-filters.html#aresample-1 says "This filter is
> also able to stretch/squeeze the audio data", which seems like the
> same thing. But there are no examples either there or at
> http://ffmpeg.org/ffmpeg-resampler.html on what exact arguments must
> be used to do this. Basically, I'm asking, is it possible to duplicate
> the effect of...
>
> asetpts=1000/1001*PTS
>
> ...or...
>
> atempo=1001/1000
>
> ...using aresample, and if so, what exactly are the arguments to be used?
No one responded to this from a week ago... does anyone know? Thanks.
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