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NextLevel / NextLevelSessionExporter

🔄 Export and transcode media in Swift
http://nextlevel.engineering
MIT License
262 stars 49 forks source link

Can I export audio only from a mp4 #3

Closed cybercent closed 7 years ago

cybercent commented 7 years ago

Hi @piemonte ,

Can NextLevelSessionExporter be used to export only the audio from a video asset ? Specifically, I'm looking to export the audio tracks of a mp4 file to CoreAudio format.

Thanks

piemonte commented 7 years ago

hey @slash7 i haven't experimented with audio-only use cases to give you the exact steps or answer. i'm sure it could work after setting the appropriate output filetype.

cybercent commented 7 years ago

Hi @piemonte,

Thanks for answering, after testing I saw that once the .mp4 is recorded it can only be exported to audio in the format .m4a. The core audio format (.caf) is not available, so I'm forced to capture the video and audio separately.