Hi Richard!

On 01/24/2012 05:15 PM, Richard Pickett wrote:
ffmpeg -y -f alsa -ac 2 -i pulse -f x11grab -r 25 -s 1354x768 -i
:0.0 -vcodec libx264 -vpre lossless_ultrafast -crf 22 -acodec
libmp3lame -ar 44100 -ab 126k -threads 3 output_file

I've found the resulting file imports into just about anything, that is
until I met Cinelerra. It just won't import.

In my experience Cinelerra doesn't like temporally compressed codecs. In fact it is pretty common for all NLE to prefer individually compressed frames.

I described problems and solutions in a dedicated page of "Cinelerra for Grandma":
http://www.g-raffa.eu/Cinelerra/HOWTO/get_media_ready.html

I hope it can help you understanding the quirks of Cinelerra.

Ciao!
Raffaella

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