export to YoutubeHD preset resolution 'drops' when adding extarnal audio

[thijs van severen]

i have a screencast recording (done with recordmydesktop) in ogv format 1088x880 @15fps
when i import this clip into openshot, edit it and then export it using the 'Web - YoutubeHD - 720p 25fps - high quality' preset everything is OK
when i add a track in openshot, import a audio wav file (44kHz mono) and then export the video again the output resolution seems to drop. the video properties still show the correct res and framerate
i have played the output file using Movie player, VLC, fplay : all the same result

i'll try to add the ogv and wav file to this report
in the output you can easily see the 'lower resolution' in the grid (in the bottom part of the gui of Hydrogen)
seems like some pixels have been dropped ?

i'm using ubuntu 10.4 with openshot 1.4.0-1 for the PPA

[emptythevoid (emptythevoid)]

This affects me with Ubuntu 13.04 64bit, Openshot 1.4.3-1, Melt 0.8.8-1, FFMPEG 6:0.8.6-1ubuntu2

Whenever I add an audio track and try to export it in 720p or 1080p, regardless of the container, the video quality degrades. This isn't a problem if I'm exporting a plain DVD (non HD) file. It doesn't seem to be affected by what my input video or audio files are (I mainly work with .dv video, but it also affects me if I use something else like an FLV). 100% reproducible.