Here is a screenshot of the rendered photo sequence

export settings are:
File Type: Microsoft DV AVI
Embedding Options: None
Video:
Compressor: DV PAL
Color Depth: Millions of colors
Framesize: 720 h 576 v 4:3 => this I cannot change (disabled input fields)
Frame Rate: 25.00 fps
Pixel Aspect Ratio: D1/DV Pal (1.067)
Quality: High
Data Rate: Recompress: Maintain Data Rate
If you need any additional information, please let me know.
Thank you very much for your help so far
Christian