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audio - Convert mp3 to AAC with mpeg-2 container …

https://stackoverflow.com/questions/21741058/convert-mp3-to-aac-with-mpeg-2-container-ffmpeg

I'm trying to convert an mp3 audio file to an AAC file with FFMPEG, and I need the audio to be wrapped in an MPEG-2 container. The resulting AAC file needs to be AAC-LC (Low Complexity), 1-channel, CBR mode, 44100 sample rate, and 48kb/s bitrate, so I use this command: ffmpeg -y -i input.mp3 -ar 44100 -ab 48k -acodec libfdk_aac -ac 1 output.aac

c++ - Decoding AAC audio with ffmpeg - Stack Overflow

https://stackoverflow.com/questions/65744845/decoding-aac-audio-with-ffmpeg

I'm trying to decode an AAC audio stream in an ADTS container, which is streamed from an external hardware H264 encoder. I've parsed out the ADTS and it tells me I've got a 2 channel, 44100 AAC Main profile frame. I setup the extra data bytes for the ffmpeg decoder and decode the frame successfully? as follows: (pseudo c++ code) setup the decoder:

FFmpeg Codecs Documentation

https://ffmpeg.org/ffmpeg-codecs.html

Use ffmpeg to convert an audio file to VBR AAC in an M4A (MP4) container: ffmpeg -i input.wav -codec:a libfdk_aac -vbr 3 output.m4a Use ffmpeg to convert an audio file to CBR 64k kbps AAC, using the High-Efficiency AAC profile:

FFmpeg Formats Documentation

https://ffmpeg.org/ffmpeg-formats.html

Enable to set MPEG version bit in the ADTS frame header to 1 which indicates MPEG-2. Default is 0, which indicates MPEG-4. 4.3 aiff. Audio Interchange File Format muxer. 4.3.1 Options. It accepts the following options: write_id3v2. Enable ID3v2 tags writing when set to 1. Default is 0 (disabled). id3v2_version. Select ID3v2 version to write.

video - ffmpeg transcoding audio to MPEG-4 HE AAC instead ...

https://apple.stackexchange.com/questions/130807/ffmpeg-transcoding-audio-to-mpeg-4-he-aac-instead-of-aac

The problem is your ffmpeg. If telling ffmpeg to use aac causes it to encode in he aac, if that is true, then there is something wrong with your ffmpeg, because specifying aac should never result in he aac. Only telling ffmpeg to encode using libaacplus or libfdk_aac should result in …

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