need good way to create screencast

I'm running Kubuntu 11.04 on Lenovo ThinkPad T510 and trying to make a video with audio of a LibreOffice Impress presentation I'm giving.

I've tried using istanbul, gtk-recordmydesktop, recorditnow, and recordmydesktop. In each case the video and audio get out of sync. I've tried every combination of settings I could find via Google in any forum post, YouTube video, bug report, etc., but nothing works.

The latest thing I've tried was to use the script posted in the bug report at https://bugs.launchpad.net/ubuntu/+source/recordmydesktop/+bug/339648 which records audio and video separately and then recombines them. Just in case anyone else tries that script, recordSoundAndDesktop.sh, I had to replace the single dashes in the recordmydesktop line with double dashes as in --fps and --v_quality. The result was a video that was still out of sync with the audio but also ran way too fast.

My sound hardware via hwinfo is:
20: PCI 1b.0: 0403 Audio device
[Created at pci.318]
Unique ID: u1Nb.WiEkMfkoYv9
SysFS ID: /devices/pci0000:00/0000:00:1b.0
SysFS BusID: 0000:00:1b.0
Hardware Class: sound
Model: "Intel Ibex Peak High Definition Audio"
Vendor: pci 0x8086 "Intel Corporation"
Device: pci 0x3b56 "Ibex Peak High Definition Audio"
SubVendor: pci 0x17aa "Lenovo"
SubDevice: pci 0x215e
Revision: 0x06
Driver: "HDA Intel"
Driver Modules: "snd_hda_intel"
Memory Range: 0xf2620000-0xf2623fff (rw,non-prefetchable)
IRQ: 41 (25351 events)
Module Alias: "pci:v00008086d00003B56sv000017AAsd0000215Ebc04sc03i00"
Driver Info #0:
Driver Status: snd_hda_intel is active
Driver Activation Cmd: "modprobe snd_hda_intel"
Config Status: cfg=new, avail=yes, need=no, active=unknown


Any ideas?


Jason
===========

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