If you're unable to do this, then post a sample file for download by others here for further examination. If it isn't, then you need to examine the file further.īasically, you need to open the file in your media player (or a media utility) and check the "Inspector" or "Media Information" window to ensure an audio track actually exists and, if so, what kind of audio data it contains. I.e., all "normal" MP4 files should be audio playback compatible with any current (and most older) media players/devices. However, since you do not indicate how the the file was sourced/created or confirm what kind of data is actually stored in the file or which player/device/OS is being used for playback, it is impossible to know if the file actually contains an audio track or, if it does, say whether or not the audio is playback compatible. It is impossible to say for sure based on the information provided.Īn MP4 video file is normally expected to contain an MPEG4, AVC (H.264), or HEVC (H.265) video track along with an AAC audio track. There is sound with other types of videos. When playing MP4 videos there is no sound.
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