Max Svideo cable length

[Retro2001]

What is the max cable length of an Svideo run? Also, if the max length is over 4 meters, where can you buy longer cable?

Thanks
will

 

[wedi42]

i bought a 50' cable from trianglecables.com
it was $10 + 7 s/h

50' is beyond spec for svideo but it works ok.
i get some artifacts, but i don't know if it is from divx or the cable.