Audio encoder: MP3 AAC.
AAC is a digital audio file, and MP4 is a video format. However, it’s easy to create an MP4 from an AAC file using an online file conversion tool like Zamzar.
Our free online AAC audio extractor features a simple and intuitive interface that allows you to cut AAC files with ease.
$ ffmpeg -ss 00:05:20 -accurate_seek -i input.mp4 -t 00:10:00 -c:v libx264 -c:a aac output7.mp4. In the above command, we re-encode the audio and video when cutting the video and we also use the -accurate_seek flag which will result in a more accurate length for the output video.
ffmpeg -ss 5.32 -i input.mp4 -c:v libx264 -c:a aac out.mp4. Note that cutting on exact frames with bitstream copy (-c:v copy) is not possible, since not all frames are intra-coded ("keyframes").
MP3Cutter.app is an online mp3 cutter. This tool allows you to cut music to create ringtones for iPhone, Android and other phones quickly. Support cut and convert all audio formats such as: AAC, FLAC, M4A, MP3, OGG, WAV, WMA, etc...
Our AAC to MP4 Converter is free and works on any web browser.
>MP4 to AAC Converter - CloudConvert is a free & fast online file conversion service.
Cut audio file online for free. Use range slider to choose duration. Support audio format MP3, AAC, M4A, OGG, WAV, etc.
The second option -f mp3 tells ffmpeg that the ouput is in mp3 format.