recently I have lost the ability to capture the sound from a video sd card. There is sound there because i can access via ms film viewer....why has it disappeared form magix. I am uptodate with all patches etc.
Assuming you are referring to AVCHD file import and are running Windows 10 1803 (April 2018 update) see this comment for the fix.
Otherwise we need more information - please read this topic and put the following information in your profile signature so we do not have to ask for it:
Computer specification - processor make/model, graphics card or chipset make/model, audio card or chipset make/model, RAM, hard drive configuration and sizes?
Windows version and is it up to date? Press and hold down the Windows key and the R key - in the dialog that opens type in winver and press enter.
Software full name and version number - as found under Help, About . . .
Also include the following where applicable:
Audio and/or video file formats being imported
MediaInfo data on video - see below
If you have issues with importing audio or video please use MediaInfo to analyse a problem clip and post the results from the Text view in MediaInfo
Also add any other information you think may be relevant.