setSwsOption method
set ffmpeg swscale option
value must be int or String
Implementation
void setSwsOption(String key, dynamic value) {
if (value is String || value is int) {
_swsOption[key] = value;
FLog.v("FOption.setSwsOption key:$key, value :$value");
} else {
FLog.e("FOption.setSwsOption with invalid value:$value");
throw ArgumentError.value(value, "value", "Must be int or String");
}
}