Met opera brightcove video download

[mooseknuckle]

In the on-demand section of the NY Met opera's homepage, you can stream highdef videos.

They use brightcove to serve their content. If I create a firewall rule, and run rtmpsuck on a small single 5-minute file, things go fine, however for the longer 2.5 hour videos, they are broken into chapters, and as soon as a chapter changes, the saved mp4 file (growing) becomes corrupted.

I'm guessing the stream changes for the chapter, and rtmpsuck keeps writing to the same mp4 file and messes it up.

I'm running linux. Is there a known workaround for this?

If I run rtmpsrv, It properly dumps the rtmpdump command, but that command errors out due to an invalid token exception. I'm guessing that rtmpsuck might be my only option?

Any ideas would be greatly appreciated. I can't send a link to the downloads, because you need to be logged in as a member to view the videos.