Exporting AAC 5.1 channel audio Help in windows

Help for Audacity 2.x.x on Windows.
Forum rules
ImageThis forum is for Audacity 2.x.x 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.
Post Reply
Posts: 1
Joined: Sat Sep 02, 2017 10:57 am
Operating System: Windows 8 or 8.1

Exporting AAC 5.1 channel audio Help in windows

Post by RocksBoy » Sun Sep 03, 2017 3:22 pm

I'm trying to export AAC 5.1 channel audio in Audacity but not able to export more than 19 minutes. My audio project is longer than 2 hours. I'm using this by external program by using these commands.
ffmpeg -i - -c:a aac -b:a 256k "%f"
ffmpeg -i - -c:a aac -q:a 5 "%f"
ffmpeg -i - -strict experimental -c:a aac -b:a 256k "%f"
ffmpeg -i - -strict experimental -c:a aac -q:a 8 "%f"

Basically I'm trying to replace third track of one AC3 5.1ch audio with one mp3 mono track. And after it, I'm exporting. I tried on many times taking different different samples and on different PC but not able to get AAC5.1 ch audio but, at the same time it is well in exporting AC3 5.1 channel sound. During AAC5.1 export It throws this error.

[pcm_s16le @ 00000000004c8620] Multiple frames in a packet.
[pcm_s16le @ 00000000004c8620] Invalid PCM packet, data has size 8 but at least a size of 12 was expected
Error while decoding stream #0:0: Invalid data found when processing input

These types of error do not arise when export shorter audio length less than 10 minutes. Plz help me.
It will help others too.

Post Reply