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How to Convert AC3 Audio to AAC in MP4/MKV Video
https://www.videosolo.com/tutorials/convert-ac3-to-aac.html#:~:text=AC3%20audio%20can%20be%20applied%20in%20many%20video,QuickTime%2C%20iTunes%2C%20as%20well%20as%20iPhone%2C%20iPad%2C%20etc.
MP4 to AC3 convert audio files — FREE online converter
https://online-audio-convert.com/en/mp4-to-ac3/
Created in 1988, it was intended for video files. A file of this format contains video and audio information, images and subtitles. When compressed, the files do not lose quality. The format includes various types of multimedia content: videos, animations, audio, 2D and 3D graphics. Files of this format can be used and viewed on the Internet.
MP4 video with AC3 multichanel – BrightSign Support
https://support.brightsign.biz/hc/en-us/community/posts/209960637-MP4-video-with-AC3-multichanel
To solve the MP4 AC3 issue, I know a quite nice solution. It can handle MP4 video with AAC stereo (2 channels), MP4 video with AAC 5.1(6 channels), MP4 video with AC3 stereo and MP4 video with AC3 5.1. Find it here: http://www.bigasoft.com/articles/how-to-convert-video-to-mp4-ac3-5.1.html
Adding AC3 Dolby Digital 5.1 multichannel audio to an MP4 ...
http://gigoblog.com/2013/06/30/adding-ac3-dolby-digital-multichannel-audio-to-an-mp4/
None of these “acquired” MP4s have AC3 5.1 6-channel audio! I could encode the file again, but that takes to much time. Is there a way I can just add or import AC3 multichannel audio to my existing video files? The short answer is yes. You need Handbrake to re-encode the audio, and QuickTime 7 to handle the remuxing. QuickTime X (like Apple’s other …
AC3 5.1 surround sound mux with MP4 - VideoHelp Forum
https://forum.videohelp.com/threads/371899-AC3-5-1-surround-sound-mux-with-MP4
AC3 became offically supported by MP4 container a few years ago . It's in the mp4ra and ISO base specs The problem is not all Apple programs like it. They made their own modified MP4 container - "M4V" to hold AC3. Videos/movies on Itunes come on this format , for example . (it's really a MP4 container)
How to Convert AC3 Audio to AAC in MP4/MKV Video
https://www.videosolo.com/tutorials/convert-ac3-to-aac.html
AC3 audio can be applied in many video containers including MP4 and MKV. But, the compatibility of AC3 audio is poor, which means you may can't hear the sound when playing MKV/MP4 videos, especially on QuickTime, iTunes, as well as iPhone, iPad, etc. So, people are searching for a way to convert audio in MP4/MKV from AC3 to AAC, as those media devices …
does MP4 contain 5.1 ch audio? - VideoHelp Forum
https://forum.videohelp.com/threads/311131-does-MP4-contain-5-1-ch-audio
MP4 is a container. It can contain 5.1AC3 or 5.1AAC or stereo or mp3 or other audio. But if it's 5.1 AC3, you need a splitter that can handle it in order to "hear" it . Use mediainfo if you don't know what is inside
H.264 in MP4 and ac3 sound track - Avidemux Forum
https://avidemux.org/smif/index.php?topic=17197.0
MP4 specs don't allow AC3 audio. I don't think that's the case. MP4 allows the inclusion of an AC3 stream, but its usage isn't common. A hardware media player that claims to play "MP4" files may not be able to handle it. But I can't see any reason why TCmullet can not use it in an MP4 for his own use.
FLAC within mp4 and/or mkv
https://hydrogenaud.io/index.php?topic=70637.0
The mp4-format is more restricted. From what I know, you can't just mux any track into it. Some players might support it though as it is just a container, but FLAC (and even AC3) are not officially supported by most applications. Still there's room for experiment.
AC3 to MP4 convert audio files — FREE online converter
https://online-audio-convert.com/en/ac3-to-mp4/
When compressed, the files do not lose quality. The format includes various types of multimedia content: videos, animations, audio, 2D and 3D graphics. Files of this format can be used and viewed on the Internet. In this case, a metadata transfer takes place. The full name of the format is MPEG-4 Part 14.
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