All Questions
3
questions with no upvoted or accepted answers
1
vote
0
answers
662
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What variant of Spline algorithm is used in "spline" parameter from "scale" filter?
FFmpeg has two filters to scale the video: scale and zscale - zscale has spline16 and spline36 parameters (they represent Spline16 and Spline36 variants of the algorithm), scale has spline parameter.
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1
vote
0
answers
480
views
ffmpeg scaling with precise edges?
i'd like to extract thumbnails from videos. the problem i'm running into is that the boundaries of the reduced images aren't clear due to edge effects in the scaling algorithm. here is a simple mire ...
- 141
1
vote
0
answers
2k
views
Scale (or center) watermark with ffmpeg to same resolution as output file
I want to have the watermark scaled to the same resolution as the output file. How do I do this?
Alternatively, how do I center the watermark in the middle of the output instead?
Here is what I have:
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