Convert AAC to SRT

Yes! Upload your AAC file from any source - iTunes, streaming downloads, or recording apps. Sonix transcribes with word-level timestamps and exports to SRT format.

AAC's efficient encoding preserves audio quality for precise timestamp generation. Sonix creates word-level timestamps accurate to within a few hundred milliseconds.

AAC's superior compression at lower bitrates means cleaner audio even in smaller files, which helps transcription accuracy. For streaming content, AAC often provides better source quality.

Absolutely! SRT files generated from AAC audio work perfectly on YouTube, Vimeo, and all major platforms. Upload the .srt file to your video's caption settings.

Use Sonix's visual editor to adjust timing by dragging boundaries or entering specific timestamps. Play the audio while editing for perfect sync.

Yes! Enable speaker detection when exporting to SRT. AAC's quality preservation helps accurate speaker identification in multi-person content.

Both typically contain the same AAC-encoded audio; the difference is packaging. A .aac file is a raw ADTS stream, while a .m4a file wraps the audio in an MPEG-4 container that supports metadata such as tags, artwork, and chapters.

Raw .aac files are a bare audio stream without a standard container, so some players and editors that expect MP4/M4A files cannot read them. Renaming the extension does not fix this — remux or convert the file into an M4A or MP3 instead.