progressive streaming dont work.
nginx with-http_flv_module

siteadmin player setting:
Streaming Details (if other than progressive)

Provider: http (eg. "http" or "rtmp")
Streamer: (eg. rtmp server location)
Param query name
for HTTP streaming: start (if other than "start")


in Nuevolabplayer 4 work

Do not offend our software without enough evidence and knowledge.

First I assume you mislead "progressive" with "pseudo-http" streaming.
Progressive is basic type of streaming and none streaming module is required for that.

Nuevoplayer works very well with any type of pseudo http streaming if only player is set correctly and streaming server works properly. Of course also if video file is ready for this type of streaming.
Our player was installed on hundreds servers with apache, lighttpd and nginx streaming modules, was also configured properly for Xmoov type of script.

realy?
http://test.clipiki.ru/video/178108/ nuevolabplayer 4, pseudostreaming work
http://clipiki.ru/video/178108/ nuevolabplayer 5, pseudostreaming dont work

wtf?

As I wrote above....
It's easy to offend, much harder to apologize...

Your player configuration is not configured for any type of custom streaming.
Pseudo-Http streaming is not script default option.
It can be different for each single server and this is webmaster's case to setup options for such type of streaming as we cannot know what server options every single webmaster may have.

For Nuevoplayer options - at least "<provider>" flashvar for playlist item must be set to "http"
But other thing is to know what video URL should be. If streaming webserver is set on other than default port - it must be set for video URL. If streaming server using some type of files download protection, like "mod_secdownload" for lighttpd - video URL must be also changed, generated according to server settings.
Those are things that we cannot know - those are things that webmaster must know and set himself.
Computer is not human, it cannot know what is your intention until you tell (write) it.

Update:
As you ordered other script installation (you have pretty many of it from Nuevolab ) and I could access your files - I set necessary options, so Nuevoplayer 5 streams well on your nginx now.