If the original file is being sent to the TV for playback then you may not see anything on the server as the TV will get the start of the file and begin decoding it then find the headers of the avc and reject the file. You will need to recode the file using handbrake or transcode in Mezzmo and force a full transcode. Mezzmo does not currently differentiate between avc1 and avc3 so there is no way to trigger transcoding of avc3 streams.