Aborted transcode used HD space, how can I recover?

[Esquilax]

I was trying to transcode a TS file to MP4 (using the wizard), but the transcoding took far longer than it should have, so I stopped it. Unfortunately, the aborted transcoding process used over 500MB of disk space, and I can't find the file VLC was writing, nor where the temporary data is being stored. Restarting my computer did not help. Can anyone help me recover the HD space?

This was with VLC for OS X version 1.1.12.

Edited to add: It seems the transcoding never started. Console has a string of repeated messages:

access_output_file access out error: cannot open `######' (Permission denied)
stream_out_standard stream out error: no suitable sout access module for `file/mp4://######'
main stream output error: stream chain failed for `transcode{vcodec=h264,vb=1024,acodec=mp4a,ab=128}:standard{mux=mp4,dst=######,access=file}'
main input error: cannot start stream output instance, aborting

I deleted system.log, which was over 300MB thanks to the messages above, but I'm still missing ~200MB of HD space. Is there another log or other file that I should look for? I don't have any other outrageously large log file in /private/var/log.