Hi
There can be may things that do this. Most common are:
• Use of old Mac - e.g. PowerMac G3 - a DVD was most often a weekend project
• HARD DISK SPACE - are running LOW.
- For SD-Video Materiaal (as on old CRT-TVs) - my minimum is 25Gb free space
- For HD-Material - 4 - 5 times more are a safe low (100 - 150Gb free spave)
This space iDVD can not use on other external hard disks - it must be on the Boot (Macintosh HD) Hard Disk.
• Use of Video-Codecs, Photo and Audio file formats that iDVD (and iMovie) has hard to or even can not use.
I use:
- Video-Codec: streamingDV, AIC or HDV
- Photo - only .jpg (no .bmp or other formats - all converted to .jpg - and a reasonable size)
- Audio - only .aiff 16 bit 48kHz or 44.1kHz (as on Audio-CDs) - NO .mp3 or directly from iTunes - all converted to this
• Material used stored so that iDVD (iMovie) has hard to get it - there are no copy in the project all must be easy to find (e.g. slow net-work storage - can give this problem)
Yours Bengt W