video transcoding doesn't work

Did you check the logs folder?

Please run the following:
sudo apt-get install htop
htop

When you run htop, do you see ffmpeg/mencoder or anything similar running?

I would go through the following checklist:

1. Check if conversion profile job created for the converting entry:
SELECT * FROM batch_job WHERE job_type = 10 AND entry_id = 'myEntryId';

2. Check if the flavor conversion jobs created:
SELECT * FROM batch_job WHERE job_type = 0 AND entry_id = 'myEntryId';

3. Check the job_sub_type of the previous step results, the subtype indicates the conversion engine you are using.
const CONVERSION_ENGINE_ON2 = 1;
const CONVERSION_ENGINE_FFMPEG = 2;
const CONVERSION_ENGINE_MENCODER = 3;
See alpha/apps/kaltura/lib/batch2/model/kConvertJobData.php for more.

4. Check the batch_config.ini file that the conversion worker (KAsyncConvert) is enabled:
enable = 1

That the engine you use is used:
params.useOn2 = true
params.useFFMpeg = true
params.MEncoder = true

That the executable is in $PATH or configured to full path:
params.ffmpegCmd = ffmpeg
params.mencderCmd = /path/to/my/bin/mencoder

5. Check the batch logs in @LOG_DIR@/batch/convert-*-2010-10-20.log for additional errors or exceptions.

Tan-Tan

i using kaltura ce on ubuntu server 10.04 (64 bit)
after finish install i can't sent email to user after add user on server
and setting postfix on server
see htop command process then CPU using 2 core form 16 core when upload and converting files video
can you help me please