Hi people
I'm using Audacity 2.0.6 with the plugin FFmpeg 2.2.2 Binary for Windows (avformat-55.dll)
I have the following issue:
When i export an ac3 file and import again, i notice a difference of 5 or 6 miliseconds more.
Yes... i know that the difference is imperceptible but it hurts at sight
http://i.imgur.com/YUWqRnv.jpg
Let me explains with images:
http://i.imgur.com/xXg7C5Z.jpg
At simple view, is hard find the difference
http://i.imgur.com/n3DE8v8.jpg
but when i make a zoom, the difference is too obvious
http://i.imgur.com/Tg1b505.jpg
Are there any fix?
Best regards
Issue exporting ac3 file that adds 5 miliseconds
Forum rules
This forum is for Audacity on Windows.
Please state which version of Windows you are using,
and the exact three-section version number of Audacity from "Help menu > About Audacity".
Audacity 1.2.x and 1.3.x are obsolete and no longer supported. If you still have those versions, please upgrade at https://www.audacityteam.org/download/.
The old forums for those versions are now closed, but you can still read the archives of the 1.2.x and 1.3.x forums.
This forum is for Audacity on Windows.Please state which version of Windows you are using,
and the exact three-section version number of Audacity from "Help menu > About Audacity".
Audacity 1.2.x and 1.3.x are obsolete and no longer supported. If you still have those versions, please upgrade at https://www.audacityteam.org/download/.
The old forums for those versions are now closed, but you can still read the archives of the 1.2.x and 1.3.x forums.
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EloyFarina
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kozikowski
- Forum Staff
- Posts: 69384
- Joined: Thu Aug 02, 2007 5:57 pm
- Operating System: macOS 10.13 High Sierra
Re: Issue exporting ac3 file that adds 5 miliseconds
Production in MP3 has serious problems and this is one of them. It's nearly impossible to do precise timing. MP3 is part of a video format and has some baggage from that association.
Koz
Koz
Re: Issue exporting ac3 file that adds 5 miliseconds
I didn't know this was an issue with AC3, but like MP3 AC3 is lossy compression. That means when you compress then decompress you don't get the original data back.
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Gale Andrews
- Quality Assurance
- Posts: 41761
- Joined: Fri Jul 27, 2007 12:02 am
- Operating System: Windows 10
Re: Issue exporting ac3 file that adds 5 miliseconds
Use WAV or FLAC. If the audio is for a movie it may support WAV.
Gale
Gale
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