[FFmpeg-user] down sampling

[Reino Wijnsma]

On 29-12-2018 20:19, Michael Koch <astroelectronic at t-online.de> wrote:
> F:\Sound\Ultraschall_Konvertierung>c://ffmpeg/ffmpeg -i 699.mp4 -f nut - | c://f
> fmpeg/ffplay -

Have you actually tested this at all? Forward slashes don't work on Windows!

C:\ffmpeg\ffmpeg.exe -f lavfi -i aevalsrc="sin(864*2*PI*t):c=stereo:s=131072" -ar 44.1k -f wav - | C:\ffmpeg\ffplay.exe -i -
or
C:\ffmpeg\ffmpeg.exe -f lavfi -i aevalsrc="sin(864*2*PI*t):c=stereo:s=131072" -af "aresample=resampler=soxr:osr=48000:precision=28" -f wav - | C:\ffmpeg\ffplay.exe -i -

-- Reino