It is possible to add additional codecs into TeamViewer for conversion. Click the link provided above by the TeamViewer Community Manager to the knowledge base article, and scroll down to the "Minimum File Size" section at the bottom. Here is the link again. Unfortunately, I don't know how to do it though - that is how I ended up here. I have ffdshow installed, but it doesn't show up in the converter Codec drop-down list. Check out this video of a guy who uses ffdshow, but doesn't explain how to make TeamViewer see the codec.
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