It seems that you are an experienced user. Hopefully you used the latest version of software.

HiDownload and MovRecorder are not very reliable RTSP QuickTime stream recorders. Besides I haven't received any reply from their support for a while.

HTTP protocol doesn't work here.

So you may try

• to play the recordings of HiDownload with QuickTime player 'coz it is more reliable than QT Alternative.
• to write to the support of MPlayer and VLC player.