Check if the given sample aspect ratio of an image is valid.
It is considered invalid if the denominator is 0 or if applying the ratio
to the image size would make the smaller dimension less than 1. If the
sar numerator is 0, it is considered unknown and will return as valid.
@param w width of the image
@param h height of the image
@param sar sample aspect ratio of the image
@return 0 if valid, a negative AVERROR code otherwise
Check if the given sample aspect ratio of an image is valid.
It is considered invalid if the denominator is 0 or if applying the ratio to the image size would make the smaller dimension less than 1. If the sar numerator is 0, it is considered unknown and will return as valid.
@param w width of the image @param h height of the image @param sar sample aspect ratio of the image @return 0 if valid, a negative AVERROR code otherwise