I've been trying a couple - Any Video Encoder and EasyFLV. AVC gives a
lot of control over audio - various variable bitrate profiles, has
batch encoding which is nice but it's buggy and undependable, change
some parameter - audio or video bitrate, frame rate, image dimension
you may get no image.

EasyFLV works more consistently but doesn't do batch encoding and
generally gives you less control over the audio.

Both of them have preset video bitrates that don't allow precise
control if you're trying to use the "add black" trick to nudge up
against the 350kbps tripwire to avoid YouTube re-encoding.

Is there an app that's non-buggy and gives more precise control? Free
is of course good.

Thanks for all input.