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What is AC3 bitrate? – Easierwithpractice.com
https://easierwithpractice.com/what-is-ac3-bitrate/
AC3 file format is a 6-channel surround sound which provides a total bitrate of 384 kilobits per second and it supports audio sample rates up to 48 kHz. You must use an amplified theater system that supports Dolby Digital to reproduce the full effect of AC3 track.
AC-3 Compressed Audio (Dolby Digital), Revision A
https://www.loc.gov/preservation/digital/formats/fdd/fdd000209.shtml
The maximum bitrate in the ATSC AC-3 specification is 640 kb/s. In DVD applications and in digital cable television, however, player and distribution limitations keep the maximum to 448 kb/s.
Best AC3 bitrate ??? - VideoHelp Forum
https://forum.videohelp.com/threads/164208-Best-AC3-bitrate
In fact most commercial DVD releases use 192kbps for 2.0 AC-3 audio. However most stand alone DVD recorders use 256kbps for 2.0 AC-3 audio. I use 256kbps myself. The only time you would have to use a higher bitrate than 256kbps is if you had something more than a 2.0 source ... such as 5.1 AC-3 which should use 448kbps for best quality.
At which bitrate does Dolby Digital (AC3) achieve ...
https://www.avsforum.com/threads/at-which-bitrate-does-dolby-digital-ac3-achieve-transparency.1440740/
I have not seen any published data on AC-3 in *stereo* at 320 kbps. Here is a double blind study of it compared to other codecs at 192 kbps and lower (at 44.1Khz which is somewhat easier than 48 Khz): [You can see that at it does poorly at lower data rates but starts to improve a lot once you reach 192 kbps.
Four Things You Should Know About EAC3
https://www.videoconverterfactory.com/tips/eac3.html
AAC vs AC3: What’s the Difference and Which One to Choose?
https://www.videoconverterfactory.com/tips/aac-vs-ac3.html
AC3: 32, 44.1, 48 kHz . Tips: The higher the sample rate the greater the dynamic range, which means more detail will be captured and the quality of the audio will be better. 2.Bit rate. AAC: 8-529 kbit/s (stereo) AC3: 32-640 kbit/s . Tips: A higher bit rate normally guarantees a better quality. 3.VBR. AAC: Yes . AC3: No
Audio Codec bitrates : handbrake - reddit
https://www.reddit.com/r/handbrake/comments/eg3dip/audio_codec_bitrates/
This is where AC3 and DTS are useful because most home theater equipment support them and in 5.1. As for bitrate, I would recommend either 160kbps or 128kbps if …
Is eac3 quality decent? : PleX - reddit
https://www.reddit.com/r/PleX/comments/cmshzw/is_eac3_quality_decent/
I know AAC has better compression than AC3 so it’s possible EAC3 is bigger than it should be compared to TrueHD or Atmos. EAC3 maxes out at like 10x the bitrate of AC3. I guess I should compare the two and see what I actually notice. There’s diminishing returns but I’m guessing EAC3 at 2-3x the bitrate of AC3 is probably a sweet spot.
Minimum suitable bitrate for 5.1 AC3 audio? - Doom9's Forum
https://forum.doom9.org/showthread.php?t=176573
It's "good enough" but it's not fully transparent. 384 Kbps will still lowpass filter a lot of stuff out. If you're using AC3, I say spend the full 640 Kbps. If you must save some space, 448 is a good compromise, and was often used on DVD. 384 is the minimum to get decent quality.
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