What does "Same as source" mean?

Question

I thought it meant that the video one tries to encode will stay at the same video rate and resolution as the original video. However, this doesn't appear to be the case. Basically, I want the resulting .flv file to be the same as the original video I'm asking it to encode.
This is a screen shot of me trying to encode a video.
A few things to note:
The source clearly states that the video is at a 16:9 aspect with dimensions of 1280x720 (which is accurate). However, the output states 960x720 - which is not correct. Yet all the settings I can find are set to "same as source."
I have tried to "change" the resolution to 1280x720 but the encoder will still output a different resolution.
So, how exactly does one get what they ask for with this program?

Answer 1

Thanks for providing a sample clip, 998... Using your clip, I have reproduced the 960x720 results that you report, but only in the AME 4.2.0.006; CS4.0 and 5.0 do not manifest this problem. Also, in 4.2.0, I can repro _only_ with the clip you provided, not with any clips that I tried from our library of test content, including clips that I created to mimic yours as closely as possible.
In the course of attempting to mimic the properties of your clip, I noticed an anomaly, which may or may not pertain to this issue. According to MediaInfo (a utility that shows all the properties of a video clip), the Level = 3.0. By my understanding (which I hasten to add is less than rock-solid), Level 3.0 does not support dimensions of 1280x720 @ a frame rate of 24fps. If in fact the clip is not in compliance with the MPEG4/h.264 standards, that still doesn't explain why AME 4.2.0 gets the output dimensions wrong when 4.0 and 5.0 do not.
Bottom line: I suggest downloading the trial of PPRO 5.5 (http://www.adobe.com/cfusion/tdrc/index.cfm?product=premiere_pro) and using AME CS5.5 for this job.