-formats or -codecs depends on your version of ffmpeg. New versions now only show muxers and demuxers for -formats.

I see, Dan. So Ignazios and my versions seem to be a little older, still working fine for me.

I would like to come back to my question in post #6:
What does the "Maximum number of clients reached" message mean that I get when I try to work with too many (>200) AVCHD clips? And is there anything I can do to increase that number of clients?

Cheers,

Chamo

I do not know where that error message comes from. I searched the Kdenlive code base for "clients" and "Maximum number" and neither of them yielded any results. Also, searching MLT and FFmpeg code bases for "clients" yielded nothing either.

I have this issue too.

234 files in AVCHD 1080
Total: 11GB

I was trying to join them all and got the attached after 7 hours of encoding.

kdenlive-0.7.8-1pclos2010
ffmpeg-0.6-1pclos2010
mlt-0.5.10-1pclos2010

Seems to be a problem with Xlib:
http://www.google.com/search?sclient=psy&hl=en&site=&source=hp&q=maximum+number+of+clients+reached&btnG=Search
https://bugs.freedesktop.org/show_bug.cgi?id=2920
A part of the pipeline seems to start x.org clients without closing them.

In another thread,
http://www.kdenlive.org/forum/yet-another-crash-openening-project

I thought it might be related to VDPAU, but we disable VDPAU when rendering because only one process can access it at time and Kdenlive UI is first.

I used to get the same error "max number of clients reached". I believe the tmp file that is created must be massive. I moved my tmp and project folder over to a huge drive dedicated to video editing and have not had those errors again. I would have about 10 gig free on the other drive and it would still fail with the above error. I was also working with transcoded avchd files.