[Mick]

Just to add that rtmpsuck does not continue to record to the end of the video. At some point it drops the connection, reconnects and then overwrites the previously recorded file! So the first half of the video is erased. :-(

Here are my observations to date with this version of rtmpdump:

Using Chromium browser incognito mode, all adverts in the video are played normally. Every time the video arrives at at an advert break it drops the connection and restarts after the adverts, but does not rename the previous file. As a result the video is overwritten and the recording lost.
:-(

I have not tried all different browsers with and without Adblock Plus, to see if it makes a difference. However, trying Chromium in normal mode with AdBlock Plus, it does not play any adverts and initially over the first 2-3 advert breaks it records continuously. Great! I thought, but unfortunately this does not continue to the end. After say 200-300MB or even less, it drops the connection, reconnects and continues to record, overwriting the file.

This is a bit of a pain because I have to keep an eye on the download to see if it stops, quickly copy the file before it is overwritten and then stitch up all the different files into one recording.

Interested to hear if other browsers (with what settings) do not suffer from this problem.