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Recording AC3 sound - VideoHelp Forum
https://forum.videohelp.com/threads/55061-Recording-AC3-sound#:~:text=you%20can%20simply%20record%20the%20ac3%20file%20as,you%20can%20do%20this%20with%20DTS%20signal%20also
How do I record AC3? - AVS Forum
https://www.avsforum.com/threads/how-do-i-record-ac3.228180/
I have also been successful in capturing AC3 audio plus video with VirtualDub. With the 410 SPDIF IN defined as the default Sound Recording Device in the Control Panel's "Sound and Audio Devices" (I'm using WinXP Home), I set the audio in VirtualDub's capture mode to PCM - 44,100 kHz, 16 bits. The audio is then captured as a 5.1DD WAV file.
How to capture AC3? - VideoHelp Forum
https://forum.videohelp.com/threads/286151-How-to-capture-AC3
Audio MUST be captured as 24-bit, 48khz stereo WAV. No processing or filtering of any kind. If the recording is not "bit-accurate", it will not produce an AC-3 file. Most audio cards with SPDIF-in apparently can NOT do this. You end up with a WAV file, technically a "DDWAV", or streaming AC-3 file.
Recording AC3 sound - VideoHelp Forum
https://forum.videohelp.com/threads/55061-Recording-AC3-sound
you can simply record the ac3 file as a wav file set to 48khz sample 16bit mono ... it will sound like crap (loud) but record it at -6dBA level .. this file can be renamed xx.ac3 and is usable .. it will be minus some information in the headers of the origanal but you should be able to still remultiplex it ... you can do this with DTS signal also ...
How to capture AC3 Audio from TOSLINK input | MacRumors …
https://forums.macrumors.com/threads/how-to-capture-ac3-audio-from-toslink-input.471081/
I am sure now. I can use Audio Hijack to hijack digital in. So, AC3 source -> TOSLINK INPUT of Mac -> TOSLINK output of Mac -? A/V receiver DOES play DD. But, alas, Audio Hijack cannot capture the audio into a suitable container, such as AC3. So, what tool will allow me to do this? Clearly, this proves it is possible.
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