[FFMpeg] vidstabdetect with scale - problem

[rgr]

This:

for %%a in ("*.mp4") do ffmpeg -i "%%a" -vf "vidstabdetect=shakiness=10:accuracy=15:result='%%~na.trf':show=1" dummy.avi -y

But this:

for %%a in ("*.mp4") do ffmpeg -i "%%a" -vf "scale=in_range=full:out_range=full,curves=master='0.0625/0 1/1',vidstabdetect=shakiness=10:accuracy=15:result='%%~na.trf':show=1" dummy.avi -y

results with this with every frame.

[vidstabdetect @ 00000097695fedb8] too low contrast. (no translations are detected in frame 34)


Why this doesn't work?
There seems to be a problem with "curves=master='0.0625/0 1/1'" -- it works fine without it.

[poisondeathray]

[vidstabdetect @ 00000097695fedb8] too low contrast. (no translations are detected in frame 34)


Why this doesn't work?

The message says "too low contrast"

Try lowering the mincontrast

https://ffmpeg.org/ffmpeg-filters.html#vidstabdetect-1

mincontrast

Set minimum contrast. Below this value a local measurement field is discarded. Must be a floating point value in the range 0-1. Default value is 0.3.

[rgr]

Not working.

After

vidstabdetect=shakiness=10:mincontrast=0:accuracy=15:result='%%~na.trf':show=1

still every frame has "too low contrast".

[poisondeathray]

Do the 1st pass analysis on the "normal" video, write the .trf

Do the 2nd pass (assuming you want to stabilize it) with your scale/curves filter and vidstabtransform

[rgr]

Do the 1st pass analysis on the "normal" video, write the .trf

Do the 2nd pass (assuming you want to stabilize it) with your scale/curves filter and vidstabtransform

Pass 1 and pass 2 only work if "curves=" is removed. If I leave "curves=" on the second pass, ffmpeg aborts and I get a file of length 0.
It seems that the curves output is incompatible with vidstab.

But it works when I put "curves=" at the end (after vidstabtransform). However, I would prefer to put before.