If you look at the code the enum in c# is:

public enum VideoFormat { FormatUndefined, RTSP, Embeddable, Mobile, }

(in c) typedef enum { GDATA_YOUTUBE_FORMAT_UNKNOWN = 0, GDATA_YOUTUBE_FORMAT_RTSP_H263_AMR = 1, GDATA_YOUTUBE_FORMAT_HTTP_SWF = 5, GDATA_YOUTUBE_FORMAT_RTSP_MPEG4_AAC = 6 } GDataYouTubeFormat;

so, when doing something like this:

int flv = (int)YouTubeQuery.VideoFormat.Embeddable;

flv gets set to 2 instead of 5.

Should the c# code be this?

public enum VideoFormat { FormatUndefined = 0, RTSP = 1, Embeddable = 5, Mobile = 6, }

The appropriate conversions to/from int are performed in the CalculateQuery and ParseUri methods.

However, I agree that the C# code you suggest will simplify that logic. Thanks for the suggestion, I'll have that included in one of the future releases.

This has been fixed in rev. 1141.