Open touste opened 5 years ago
Ideally, three passes are correct in this case because I expect the stabilization can change the compression rate quite a bit. (Disclaimer: I don't know what the VP9 encoder is doing in its passes)
Thanks, that makes sense!
On Mon, Jul 22, 2019 at 6:16 PM Georg Martius notifications@github.com wrote:
Ideally, three passes are correct in this case because I expect the stabilization can change the compression rate quite a bit. (Disclaimer: I don't know what the VP9 encoder is doing in its passes)
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I would like to use this filter with 2-pass encoding with the VP9 encoder:
ffmpeg -i input.mp4 -c:v libvpx-vp9 -b:v 2M -pass 1 -an -f webm /dev/null
ffmpeg -i input.mp4 -c:v libvpx-vp9 -b:v 2M -pass 2 -c:a libopus output.webm
How am I supposed to use the filter in this case? Should I use
vidstabdetect
during the first pass andvidstabtransform
during the second? However in this case the first pass of the vp9 encoder will run on the shaky video, though it should be run on the stabilized video really.Should I do three passes then? First one for
vidstabdetect
, second one forvidstabtransform
and-pass 1
of vp9 and third one for-pass 2
of vp9?Thanks!