AAC codec not working on PC ffdshow

[jack616]

Does anyone know how to get the AAC codec in ffdshow to work?

I've tried it with 2/3/6 channels and I read soemone else tried 7 channels
None of them seem to work.

I'm using MPC and have tried internal/external settings but dont fully understand them
so maybe I'm doing something wrong - but I know others have trouble with AAC

cheers

[poisondeathray]

what is the file? what container? use mediainfo if you don't know

If you enable aac in the ffdshow audio configuration, it should work, but you may need a splitter installed depending on the file type e.g. haali media splitter

[jack616]

Hi - thanks

The file container doesnt seem to matter - .ts MKV etc. But the reason I'm trying to do this
is to play my PVR files from a Humax TV box on my laptop via MPC and the box only creates AAC with various channels.
The problem apparently is the faad codec doesn't seem to work
I am using the haali splitter
all variations of enabled and not have been tried (I spent hours fiddling as I have a lot of new hardware I'm trying
to set up and make compatible.)

Various bitrates and channels have been seen to fail and I've never managed to get any AAC file to play.

Reading the ffdshow bug list similar reports have been made but nothing ever seems to be done or reported back.

[poisondeathray]

one variation of AAC that some boxes use is LATM/LOAS AAC. It's not supported by ffdshow. Use mediainfo to determine if this is what you have

You can try LAV splitter and audio decoder, but you would have to configure you directshow filters & set merits. I think newest versions of VLC should be able to play it

[Nologic]

Well here is my suggestion...use FFMpeg to convert the audio stream over to PCM\WAV then convert it over to AAC using NeroAAC...then build a new video container with the new audio stream and the old video stream.

FFMpeg.exe -y -i "C:\Video.avi" -c:a:0 pcm_s16le "C:\Audio.wav"
NeroAacEnc.exe" -ignorelength -lc -q 40 -if "C:\Audio.wav" -of "C:\Audio.mp4"
FFMpeg.exe -y -i "C:\Video.avi" -c:v:0 copy -i "C:\Audio.mp4" -c:a:0 copy "C:\Video.mkv"
Del "C:\Video.avi"
Del "C:\Audio.wav"
Del "C:\Audio.mp4"

The resulting file should be playable in MPC.

If you got several of these to convert you could probably put together a AutoIt\Batch\JavaScript\PowerShell script to automate this.

Example Batch Script

@Echo Off

If Not Exist ".\Temp\" MKDir ".\Temp\"
If Not Exist ".\Videos New\" MKDir ".\Videos New\"

CD ".\Videos Old\"
For %%i in (*.avi) Do (
Start /Wait ..\FFMpeg\Bin\ffmpeg.exe -i ".\%%~ni.avi" -c:a:0 pcm_s16le -f wav - | "..\Nero AAC\neroAacEnc.exe" -ignorelength -lc -q 40 -if - -of ..\Temp\Audio.mp4
Start /Wait ..\FFMpeg\Bin\ffmpeg.exe -y -i ".\%%~ni.avi" -c:v:0 copy -i ..\Temp\Audio.mp4 -c:a:0 copy "..\Videos New\%%~ni.mkv"
Del ..\Temp\*.*
)

Folder structure should be like so:
.\MyBatchScript.bat
.\FFMpeg\Bin\FFmpeg.exe
.\Nero AAC\neroAacEnc.exe
.\Temp\
.\Videos Old\
.\Videos New\

Original videos go in ".\Videos Old\" and the resulting ones will be placed in ".\Videos New\"

I haven't ran this script but it "should" work.

[Ai Haibara]

Stupid question, perhaps, but just to be safe - are you using the 32-bit version of ffdshow alongside Haali and MPC? (Unless you're using MPC-HC, in which case, you'd have to be using the 32-bit version of that as well...)