Dvd format conversion

Sir/Madam,
I have been recording home vedios on a sony DVD camcorder on Sony RW DVDs
. However I happened to record a video on Imation RW DVD a few days back. On completion of recording, I realised the DVD is read only on the camcorder and the fikle on cd is not detected on any other DVD player. Request advise on recovery of video.
thank you
Bipin