HDMI cable 1.3 HD1080 - unfortunately with picture jerkiness & error during synchronization

This is the second extension cable that a 5m HDMI 1080p to replace cable.
Unfortunately, the 7.5m long cable against the cable 5m Bildruckler and synchronization errors on (the right half of the screen
appear clearly later than the left half of the screen; 720p). I could in several scenes and 5 times Repeat
notice with the 5m and 7.5m cable. Since I only have the cable replaced, I assume that the not it on the player or
installed codecs may be.

Pro:
+ Very reasonable price
+ Optical perfectly processed
+ DVDs are cleanly

Con:
- Slight Bildruckler (720p, 1080p)
- Synchronization error (720p, 1080p)

Conclusion:
- For my purpose (images: 720p and 1080p) are not suitable.

Note:
The shipper (lets sells) was very friendly and offered me no exchange spare on.
I do not, however, took to complete. The amount paid was refunded.