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MP4 No Sound/Audio Lost Problems Fixed! - MacX DVD
https://www.macxdvd.com/mac-dvd-video-converter-how-to/mp4-no-sound-fixed.htm#:~:text=MP4%20No%20Sound%20Troubleshooting%20Guide%201%20Try%20to,MP4%20file%20in%20any%20of%20the%20above%20players.
MP4 no audio on quicktime player & iMovie - Apple Community
https://discussions.apple.com/thread/8117403
I downloaded a video in MP4 format, but when I tried to open it in quicktime player, it has no audio. Unfortunately, the information given is incomplete and/or ambiguous at this point. I generally recommend posting either images containing a breakdown of data compression information detailing how the file was created or the uploading of a sample file for examination.
macbook pro - No audio for mp4 files in Quicktime and ...
https://apple.stackexchange.com/questions/342266/no-audio-for-mp4-files-in-quicktime-and-itunes-but-works-for-vlc
MP4 is a container format,the audio codec format could be aac mp3 ac3,etc. iTunes and QuickTime can’t support all those codecs.You can use mediainfo to check the exact audio codec format. You can see the link below QuickTime compatible and non-compatible formats Codecs supported by MP4 container. TL;DR according to my experience,probably AC3 DTS opus.
If an audio or video file doesn't play on Mac - Apple Support
https://support.apple.com/en-us/HT201290
Some apps prefer specific formats, but QuickTime movie files (.mov), most MPEG files (.mp4, .m4v, .m4a, .mp3, .mpg), some AVI and WAV files, and many other formats usually work in most apps without additional software. Older or specialized media formats might not work in your app, because the format requires software designed to support it. If that happens, …
QuickTime Screen Recording No Sound? Solutions Explained!
https://www.flexclip.com/learn/quicktime-screen-recording-no-sound.html
Follow the instructions below to fix the problem in minutes! How to Fix QuickTime Screen Recording No Sound Issue. Solution 1: Check Mac's Security & Privacy settings Solution 2: Check the sound input settings Solution 3: Download a third-party audio recorder - Soundflower Solution 4: Switch to a QuickTime Alternative.
Rendered MP4 Files - Video but no audio in Quicktime on ...
https://forum.videohelp.com/threads/340498-Rendered-MP4-Files-Video-but-no-audio-in-Quicktime-on-different-PC
When I load these MP4 files from the USB stick into PC2 in the house for upload to Vimeo they have no audio in Quicktime but the video is just fine (VLC is OK for video and audio – but strangely only plays audio when the audio device is set to mono!!??). MP4 files uploaded to Vimeo and Youtube have no sound on PC2 but the audio apparently plays OK on other PCs …
MP4 No Sound? How to Fix MP4 Files? Solved Here
https://repairit.wondershare.com/video-repair/mp4-no-sound.html
As the statement implies, an MP4 file that has refused to play audio when you play the video file is said to have "no sound." This means that the MP4 file has not been able to synchronize the video and audio so that both will play and at the same time. An MP4 video without sound is a video that goes mute when you open it, even though the video might be playing. 2. Causes of MP4 No …
MP4 No Sound/Audio Lost Problems Fixed! - MacX DVD
https://www.macxdvd.com/mac-dvd-video-converter-how-to/mp4-no-sound-fixed.htm
How to Fix MP4 No Sound Problem Effortlessly. Step 1: Free download the MP4 video converter or Mac version and launch it. Click "+" to load the MP4 file without sound. Step 2: Choose the output format from the automatically popped up window.
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