Am 14.09.2020 um 11:26 schrieb Gyan Doshi:
On 14-09-2020 02:47 pm, Michael Koch wrote:
ffmpeg -v verbose -f lavfi -i testsrc2=s=svga:d=5,format=yuv422p10le
-vf format=rgb48le,lut3d="VLog_to_V709.cube",format=yuv422p10le
-noauto_conversion_filters -pix_fmt yuv422p10le -c:v h264 -y out.mov
Format conversion is carried out by libswscale and auto conversion
inserts the scale filter.
So,
ffmpeg -v verbose -f lavfi -i
testsrc2=s=svga:d=5,format=yuv422p10le -vf
scale,format=rgb48le,lut3d="VLog_to_V709.cube",scale
-noauto_conversion_filters -pix_fmt yuv422p10le -c:v h264 -y out.mov
The final format filter is redundant with -pix_fmt, so I removed one
of them.
Thank you, with "scale" it works fine. Although it's hard to understand
what "scale" (without any options) is actually doing.
I have another question. Is this the correct and easiest way to make a
10-bit test video?
-f lavfi -i testsrc2=s=svga:d=5,format=yuv422p10le
In the documentation is written
"The |testsrc2|source is similar to testsrc, but supports more pixel
formats instead of just |rgb24|. This allows using it as an input for
other tests without requiring a format conversion."
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
But in my above command, I think "format=yuv422p10le" is a format
conversion.
Michael
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