Can ffmpeg be used to grab cspan videos?

[Nomorecocktails]

I am truly amazed by the power of ffmpeg and its ability to grab online videos. Can ffmpeg be used to get cspan videos? I know RTMP dump works and that is what i use now but a lot of the time the first few seconds of cspan vids are pixelated. Also I have no real way of editing them - conversion to mp4 causes A/V to go out of sync and rewrapping it in mp4 make the video act like it is fast forward when i bring it into premiere. So i was looking for an alternate way of grabbing cspan videos without screen capping.