Stereo audio test in mp4 format - read description

598 views · Published 29 September 2008 · 2:31 · Indexed 8 November 2026

Channel: cplai · 2008 · Music

Watch on YouTube

For stereo sound, add &fmt=18 to the end of the URL.

I heard about the HiDef playback on YouTube that now support stereo sound starting just recently.  For my curiosity, I just uploaded a TV commercial that has a stereo sound track.  It is a commercial, so if it sold you, lucky them.

The "Watch in High Quality" option does not appear under the video frame and the stereo sound is missing.  However, if I append &fmt=18 to the end of the URL, then YouTube play back in stereo.  So this is not yet a standard feature, you have to do something special to turn it on.

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