mux_data->subtitle = 1;
mux_data->sub_format = subtitle->format;
- mux_data->track = MP4AddSubpicTrack( m->file, 90000, title->width, title->height );
+ mux_data->track = MP4AddSubpicTrack( m->file, 90000, subtitle->width, subtitle->height );
MP4SetTrackLanguage(m->file, mux_data->track, subtitle->iso639_2);