Is there any way to introduce audio delay into the transcoding pipeline / scenario?

Is there any way to introduce audio delay into the transcoding pipeline / scenario?

Multi language streaming Scenario:
1 FMLE sending video only rtmp
more than 1 audio only streams
ABR to serve video with multiple language / audio channels
The source translation and video are fully in sync.

There’s always a small noticeable lip sync. How can I compensate this?

I have tried to sync video to audio and vice versa.

Try to add adelay filter: http://ffmpeg.org/ffmpeg-filters.html#adelay
To do this, add custom audio filter and set filter name to "adelay" and desired delay in milliseconds as Filter params, e.g. "250|250"