[FFmpeg-user] Multiple "tee"s in a single FFMPEG instance

Moritz Barsnick barsnick at gmx.net
Mon Sep 8 11:35:15 CEST 2014

On Sun, Sep 07, 2014 at 21:22:13 +0300, Soner CAN wrote:
> prevent FFMPEG encode the same file twice. But when I try to use two tee's
> it needs to transcode again.
> -filter_complex "[0:0]scale=640x480[large];[0:0]scale=240x50[small]"

You are requesting two different outputs: One in 640x480, one in
240x50. How do you expect ffmpeg _not_ to encode twice? You can't
re-use a 640x480 stream as 240x50.


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