Updating windows media player codecs
This problem does not exist when using the Direct Show framework for playback of real Media files. If you see "Direct Show", then click on it and change it to "Real Media".
The only way to re-activate the play button is to re-open the file. This is the default setting, so normally you don't need to change anything.
Enable Microsoft PCM in LAV Audio decoder or IMA ADPCM in ffdshow audio decoder.majortype: MEDIATYPE_Audio subtype: Unknown GUID Name formattype: FORMAT_Wave Format Ex The format above is Ogg Vorbis audio.
Enable Vorbis in LAV audio decoder or ffdshow audio decoder.majortype: MEDIATYPE_Video subtype: Unknown GUID Name formattype: FORMAT_Video Info2 You may get the above error when there is a problem with your graphics driver that prevents the use of DXVA.
See Options - Internal Filters.majortype: MEDIATYPE_Stream subtype: MEDIASUBTYPE_Avi formattype: TIME_FORMAT_NONE The types above usually mean that you are trying to play an incomplete AVI file or a non-standard compliant AVI file.
The default AVI splitter of Windows has difficulty to handle incomplete files.
If MPC loads slowly only when playing a file, then the problem might be related to your graphics driver. If that does not help, then select a different video renderer in MPC: Options -First check if you did not accidentally enabled the audio mute button or have set the volume to 0. Then click on the Windows speaker icon in your system tray (right-bottom corner of your screen). Then you should see volume sliders for all active multimedia programs.
Check if the volume of MPC is correct and not muted.
See Options - Internal Filters.majortype: MEDIATYPE_Audio subtype: Unknown GUID Name The format above is IMA4 audio.
The solution is to disable hardware acceleration in the video decoder settings.majortype: MEDIATYPE_Video subtype: Unknown GUID Name formattype: FORMAT_Video Info The format above is Indeo 5.
You can enable that codec with the Codec Tweak Tool (manage VFW codecs).
Another known cause for slow loading of MPC is related to certain old versions of the Realtek sound driver.
If your computer has a Realtek sound chip, then you should update your driver to the latest version.
Search for updating windows media player codecs:
Renderers that are not compatible are Overlay Mixer and mad VR.