May be too easy, but I don't know
I want to input an AAC file and re-encode it into another AAC or M4A.
I can do it by using M4A file, but not AAC.
qaac input.m4a -V73 -o out.m4a
qaac input.aac -V73 -o out.m4a
this not.. something missing. can someone put here the working code?
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This is the code i use for encoding to aac/m4a below you can see i've added qaac and neroaac this should help you out
ffmpeg -i my-music-file-input.aac -vn -ac 2 -ar 48000 -f wav - | qaac - --threading --normalize --vbr 192 -o my-music-file-output.m4aNERO AAC
ffmpeg -i my-music-file-input.aac -vn -ac 2 -ar 48000 -f wav - | neroaac -ignorelength -lc -br 192000 -if - -of my-music-file-output.m4a
But can't it be done without using FFMPEG and making a Wav?
I have no knowledge about stdin and stdout.
Can't we use --adts switch with stdin and stdout to do that?
What they say there abt --adts, AAC input or output?
In 2.55, AAC input tested, worked.
If it fails for you, you can follow stdin wav input method suggested by NiGHT-WiNG with the help of ffmpeg,
or since M4A worked for you, you can quickly mux AAC into M4A and use it. mp4box can be used.
mp4box -add input.aac#audio input.m4a qaac input.m4a -V 73 -o out.m4a
Example, here ffmpeg can be used.
ffmpeg -i input.mkv -vn -acodec copy input.m4a qaac input.m4a -V 73 -o out.m4a
But try to fix ur issue with AAC input.