edl->rechannel();
edl->resample(old_samplerate, new_samplerate, TRACK_AUDIO);
edl->resample(old_framerate, new_framerate, TRACK_VIDEO);
edl->rechannel();
edl->resample(old_samplerate, new_samplerate, TRACK_AUDIO);
edl->resample(old_framerate, new_framerate, TRACK_VIDEO);