One dub order, with download links once status is complete. Links expire after 8 hours; call again for fresh ones. The callback POSTs this same body. An unknown id is 404.

Download types: audio_wav_vocals, audio_wav_mixed, audio_mp3_vocals, audio_mp3_mixed, video_mp4_vocals, video_mp4_mixed, audio_wav_ducked_voice; for 5.1 sources also audio_wav_mixed_5pt1, video_mp4_mixed_5pt1, audio_wav_bed_5pt1.