Hi,

seems to be a quite difficult topic.

I am looking for a best practice to do video editing on cinelerra. I am using 
a Panasonic X909 that gives me AVCHD files. According to mplayer the video 
codec is h264 and the audio codec is ac-3.

As cinelerra-cv does not read MTS files I tried to convert them by

avconv -i $SFN.MTS -vcodec copy -acodec copy $DFN.mov

cinelerra is reading the file but when I drag it into the timeline it starts 
rendering the preview frames in the timeline. During that there is a bunch of 
error messages on the terminal:

[h264 @ 0x7f104b6c4ae0]illegal short term buffer state detected

at some point cinelerra crashes:
[h264 @ 0x7f104b6c4ae0]Internal error, picture buffer overflow


The only workaround I found so far is using dnxhd as video codec, which is 
bloating up my video files and takes a lot of time to produce.


Also the ac-3 audio codec is causing problems if I convert the video to dnxhd:

I get error messages like:
new_acodec: couldn't find codec for "AC-3"

and cinelerra won't stop playback until I terminate it.


So what's the best video/audio codec for cinelerra and how do I get it.

I am using cinelerra-cv-2.2 from the cinelerra-ppa repos on ubuntu 12.10. The 
same behaviour I get using cinelerra-cv from the stable git repo from 
cinelerra,org


Any hints?

Thanks

Johannes

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