How to Convert AC-3 Audio to AAC

[Aashik Alam]

i have a 4 g.b avi video file which have AC-3 audio .. which does not play on my smartphone


it says

(the audio ac-3 does not support in this device)

and i dont want to convert full video and audio


is there any way to Convert only audio and video should be passthrough....

[hello_hello]

Try Video To Video Converter. Download the portable version as it doesn't try to install adware.
Run the program and drag and drop the AVI onto it. Choose the appropriate conversion preset. On the right, select "copy" for the video. Use whichever codec you prefer for the audio (it'll probably need to be MP3). If you've picked an appropriate preset, the output container should already be AVI. Click Okay and then "Convert" after the job is added to the queue.

I suggested trying MP3 as while it's possible to put AAC audio in an AVI container it's not a standard combination and may not be supported. Mp3 is, however, limited to stereo. I think VTV Converter will down-mix multi-channel to stereo.
If you need AAC try picking a conversion preset that gives you an MP4 output container. You should still be able to copy the video but AAC audio is more likely to be supported in an MP4 container..... assuming the smatphone supports MP4.

[johns0]

You can install the ac3 video player for your smart phone,no need for any re-encoding,it will play the ac3 audio.

[pandy]

I agree with others, first try to make it work with ac3 - if no luck then you may give a chance to ffmpeg - only audio will be encoded, video copies so no video loss and IMHO marginal audio loss (from smartphone perspective insignificant).

@setlocal
@set ffmpeg=%cd%\ffmpeg.exe
@set outd=mkv_aac
@if not exist %cd%\%outd% (mkdir %outd%)
@for %%1 in (*.mkv *.mp4) do (@%ffmpeg% -stats -y -i "%%1" -c:v copy -c:a aac -q:a 2.0 -f matroska "%outd%\%%~n1.mkv")
@pause

[Aashik Alam]

Try Video To Video Converter. Download the portable version as it doesn't try to install adware.
Run the program and drag and drop the AVI onto it. Choose the appropriate conversion preset. On the right, select "copy" for the video. Use whichever codec you prefer for the audio (it'll probably need to be MP3). If you've picked an appropriate preset, the output container should already be AVI. Click Okay and then "Convert" after the job is added to the queue.

I suggested trying MP3 as while it's possible to put AAC audio in an AVI container it's not a standard combination and may not be supported. Mp3 is, however, limited to stereo. I think VTV Converter will down-mix multi-channel to stereo.
If you need AAC try picking a conversion preset that gives you an MP4 output container. You should still be able to copy the video but AAC audio is more likely to be supported in an MP4 container..... assuming the smatphone supports MP4.

when i select copy the converter does not convert the video ...

[Aashik Alam]

You can install the ac3 video player for your smart phone,no need for any re-encoding,it will play the ac3 audio.

plz give me a converter link that convert that types of video



last time i have download this types of converter .... but i don't know the name of converter .... converter setup has black theme ....

[Baldrick]

What is your smart phone? Android or iOS? Then try VLC Media player.


Or try another converter like avidemux, open avi, under video choose copy, under audio choose AAC(or mp3), under format choose AVI muxer or MP4 Muxer. Save as an avi or mp4.

[pandy]

plz give me a converter link that convert that types of video

Use ffmpeg - script is already provided.

[Baldrick]

plz give me a converter link that convert that types of video

Use ffmpeg - script is already provided.

That script wont work with .avi sources...

[pandy]

That script wont work with .avi sources...

Ah yes, indeed, my fault, sorry.

@setlocal
@set ffmpeg=%cd%\ffmpeg.exe
@set outd=mkv_aac
@if not exist %cd%\%outd% (mkdir %outd%)
@for %%1 in (*.avi) do (@%ffmpeg% -stats -y -i "%%1" -c:v copy -c:a aac -q:a 2.0 -f matroska "%outd%\%%~n1.mkv")
@pause