Q: DVD created with iDVD won't play on DVD players.

I have found that iDVD is not reliable in any OS version past Mountain lion (Mavericks or Yosemite); it has not been supported by Apple since Lion although, their Engineering dept. did work with me after I sent in bug reports through Mountain lion. After that, the support stopped. All I can suggest is to try again or, as I do, use a different burn app (I use Roxio Toast) - I still give my movies the "finish" with iDVD with menus/transitions, etc. and then burn to a disc image or Video TS folder; I then drag that into the Toast window to burn to DVD.

How old are the DVD players that won't play the disk?  DVD+R disks are not compatible with DVD players built before 2003.  If you used the same disk with Mavericks then this premise is not valid.

Follow this workflow to help assure the best qualty video DVD:

Once you have the project as you want it save it as a disk image via the File ➙ Save as Disk Image  menu option. This will separate the encoding process from the burn process.

 

To check the encoding mount the disk image, launch DVD Player and play it.  If it plays OK with DVD Player the encoding is good.

 

Then burn to disk with Disk Utility or Toast at the slowest speed available (2x-4x) to assure the best burn quality.  Always use top quality media:  Verbatim, Maxell or Taiyo Yuden DVD-R are the most recommended in these forums.

Burning the disk image with Disk Utility or Roxio Toast as babowa suggested at the slowest speed available will produce a more reliable video DVD than directly from iDVD.

I have found that iDVD is not reliable in any OS version past Mountain lion (Mavericks or Yosemite)

Our organization is using iDVD almost daily with Mavericks and Yosemite, using with Mac Pros, Mac Minis, and MacBook Pros.   ZERO problems.

If we were unable to use iDVD, we would probably have to say goodbye to Macintosh.

I'm glad to hear it although on my machine it does not work reliably. I maintain a Mountain Lion partition for movie work as iMovie HD 06 does not even launch in Yosemite and is not reliable in Mavericks.

as iMovie HD 06 does not even launch in Yosemite and is not reliable in Mavericks.

Wow, we certainly are having different experiences.   We are using iMovie HD 06 with Mavericks on a daily basis.  No problems.

Yosemite has a bug that incorrectly identifies iMovie 6 (a.k.a. iMovie HD) as not compatible.  iMovie HD works fine with Yosemite.  Below is a workaround that many use until this bug is fixed.

Find iMovie HD in your applications folder.

Right click on it, and select “Show Package Contents”.

You will then find a folder named "Contents”.  Open it.  Then open the folder named "MacOS”.

There you will find "iMovie HD".  Double-click on this, and iMovie HD will launch.

Then create an alias. iMovie HD starts directly from the alias.

Yes, thanks, I tried that method and, on my machine, it's not reliable, so I gave up on it.

Hi

Any one mentioned - BURN SPEED?

In iDVD or Toast I never let this go faster than x2-x4 and I use Verbatim DVD-R with good results !

Yours Bengt W

I've always used the slowest available. The newer Verbatim DVD+R's  and external DVD burners usually show up with a minimum speed of 8x in Toast - my old burner allowed 1x and 2x - the new one I just got starts out showing those speeds and, as soon as it reads the blank DVD, it changes to a minimum of 8x.

Did You try to use Disk Util tool ?

Save as a DiskImage !

Then use Disk Util tool to burn this img file. Here I can set speed of choise.

Yours Bengt W