Video No Sound on YouTube, MySpace and Flash Video on Mac OS X

When watching web pages with embedded Flash video or animation such as movie or video clip on YouTube and MySpace using Mac OS X, users may hear no sound. The no sound audio output problem happens despite video playback is fine, and the issue can happen on any web browser, i.e. Safari and Mozilla Firefox. Strange thing is that, when using other applications such as RealPlayer, QuickTime Player and VLC Player, the sound is played properly. And no audio output issue does not affect embedded QuickTime including HD contents on the web.

Apple Mac OS X support site explains that the no audio from certain multimedia content issue is caused by some audio applications that change the computer’s audio settings to a sample rate that is too high for other applications to use. The notorious programs include certain versions of Real Player, VLC Player and Audacity.

The solution to solve the Internet movie no sound or audio output is to reset the audio setting in Mac OS X to original configuration:

  1. Open “Audio MIDI Setup” (/Applications/Utilities/), then check the “Audio Output” setting.
  2. Change the “Audio Output” setting to 44100.0 Hz.
  3. Quit Audio MIDI Setup.

If the Audio Output setting is grayed out or disabled, go to “Properties For” tab in Audio MIDI Setup, and select “Built in Output”.

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12 Responses to “Video No Sound on YouTube, MySpace and Flash Video on Mac OS X”

  1. Alejandra
    February 16th, 2008 10:57
    1

    thay you so much! this is exactly what I was looking for!

  2. rog
    February 21st, 2008 23:02
    2

    still no joy for me (myspace in firefox on mac mini running mac os 10.4.11); animation but no sound. except once! i can’t make it work again though.

  3. Cassie
    May 28th, 2008 09:16
    3

    Thanks, works like a charm!

  4. LEWIS
    June 7th, 2008 11:41
    4

    AQUI LES TENGO LA SOLUCION PARA EL PROBLEMA DE NO TENER SONIDO EN YOUTUBE Y OTROS SITIOS AQUI LES VA ESPERO QUE LES SIRVA
    1. Click ‘Inicio’
    2. Click ‘Ejecutar’
    3. Tipear ‘regedit’
    4. Click ‘My Computer’
    5. Click ‘HKEY_LOCAL_MACHINE’
    6. Click ‘SOFTWARE’
    7. Click ‘Microsoft’
    8. Click ‘Windows NT’
    9. Click ‘CurrentVersion’
    10. Click derecho en el nodo ‘Drivers32′
    11. Click ‘nuevo’ y seleccione ‘valor alfanumérico’
    12. Escriba ‘wavemapper’ sin las comillas
    13. Click ‘Enter’
    14. Click derecho en ‘wavemapper’
    15. Click ‘Modificar’
    16. Escriba ‘msacm32.drv’
    17. Click ‘Enter’
    18. Click derecho en ‘Drivers32′
    19. Click ‘nuevo’ y seleccione ‘valor alfanumérico’
    20. Escriba ‘midimapper’
    21. Click ‘Enter’
    22. Click derecho en ‘midimapper’
    23. Click ‘Modificar’
    24. Escriba ‘midimap.dll’
    25. Click ‘OK’
    26. Cierre el editor del registro
    27. Disfrute sus videos con audio (No es necesario reiniciar)

  5. neeeo
    June 17th, 2008 17:08
    5

    you beauty !
    even adobe dont have this standard fix on their initial website support page

    thanks
    neeeo : )

  6. Elifrit
    July 4th, 2008 14:44
    6

    Gracias a LEWIS, su solucion me ha funcionado de maravilla.

  7. LAR
    August 18th, 2008 13:21
    7

    La solución está en tus narices, es el control de volumen de la ventana de video, esta en mínimo, por más que subs el volumen de tu PC no vas a escuchar nada.
    He visto ya varias veces que las personas no ven ese control.

  8. Andres
    August 25th, 2008 12:54
    8

    GRACIAS!!!! DE VERDAD!!!

  9. Nate
    September 10th, 2008 01:02
    9

    Thanks so much, that worked great and I couldn’t find support for the issue anywhere else.

  10. nana
    September 28th, 2008 22:50
    10

    I had the similar issue where there was no sound when i use flash on the internet (both firefox and IE). But the computer sounds worked fine. Tried upgrading the IE and uninstalled and reinstalled flash. Nothing worked. Then read your forum.
    Solution: In windows XP, change the sound settings to 44.1KHZ. Start -> control panel-> Sound,speech audio devices -> Sound Manager-> digial audio - set to 44.1Khz.
    That worked. Thank you guys, by changing the setting to 44.1KH on windows got it working.

  11. manuel
    October 1st, 2008 03:12
    11

    una vez me paso pero reinicie la maquina y funciono un dia pense que volvio a suceder pero resulta que el volumen estaba en silencio

  12. alexis
    October 6th, 2008 04:31
    12

    THANK YOU THANK YOU THANK YOU !!!
    the ‘audio output’ change solved my web sound problem!
    i’ve been looking for a simple answer like this for days now, and finally found it here. short, clear and to the point.

    a clue for other users: the application that must have changed my audio settings was a modular synthesizer demo version. it happened without any prior notice.

    @lexis

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