#6524: Video filter with relative scaling produces invalid resolutions (not
divisible by 2)
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Reporter: monty | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: unspecified | undetermined
Keywords: | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
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Comment (by tbucher):
-1 simply preserves source aspect ratio, it doesn't care whether output
dimensions will be odd or even. If you need them divisible by 2, use -2.
FFmpeg documentation for the scale filter states:
If one and only one of the values is -n with n >= 1, the scale filter will
use a value that maintains the aspect ratio of the input image, calculated
from the other specified dimension. After that it will, however, make sure
that the calculated dimension is divisible by n and adjust the value if
necessary.
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Ticket URL: <https://trac.ffmpeg.org/ticket/6524#comment:1>
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