Once you hit play on your test download, listen carefully:
: Provides official MP4 test signals for Dolby Digital Plus and Atmos, ideal for technical calibration. dolby digital 51 surround sound test video download hot
You can find many 5.1 test videos on YouTube, but streaming via YouTube compresses audio to horrible 128kbps AAC stereo. To get the true Dolby Digital 5.1 experience, you must use a third-party downloader (like y2mate or 4K Video Downloader) to pull the original uploaded file 鈥攁ssuming the uploader kept the 5.1 track intact. The Ultimate Guide to Dolby Digital 5