Most times when I play a mp4 file with AAC sound I get an audio sync problem. I am able to fix this by setting the lip sync audio delay to 200ms via options on the media player.
The media player connects to the TV via HDMI with the HDMI audio passthrough selected. I then run an optical cable out from the TV to the amplifier and my speaker system for general video watching. Even if I were to listen to the audio via the TV Speakers and not from the sound system, it remains OOS. It improves slightly if I select “Stereo” on the media player.
I set the audio up this way as the TV has a Headphones jack which I use to connect to my analogue wireless headphones. The headphones audio is OOS as well. Adjusting the lip sync via options fixes both problems, headphones and speaker system audio.
I have a separate setup for the very few times when I want to play a file with a DTS soundtrack. This setup works directly from the media player to the amplifier via toslink connection. I need to reset the media player to ‘Optical passthrough’ when using this setup.
Is there a quick work around for my aac audio and mp4 files audio sync problem?