Playing audio playlist (multiple files sequentially) in a single SIP call

[RezaBagheri8]

Hello,

I am using SIP Sorcery in an ASP.NET Core application to establish SIP calls and stream audio using FFmpegFileSource and VoIPMediaSession.

Currently I have successfully implemented:

• SIP call establishment
• Streaming a single audio file into the call using FFmpegFileSource

This works correctly.

Now I have a use case for scheduled playback of an audio playlist (multiple audio files that should be played sequentially in the same call).

Before implementing any workaround, I wanted to ask:
Is there any built-in or officially supported way in SIP Sorcery to play multiple audio files sequentially (playlist) in a single call/session?
If not, what is the recommended approach for this scenario?

For example:
Replacing/swapping audio sources dynamically
Using FFmpeg playlist/concat internally
Recreating media sessions per file
Or delegating playback to a SIP media server

Also for context:
I am using Asterisk as the SIP server in my system.

My backend (ASP.NET Core) currently controls call setup using SIP Sorcery and streams audio.

I would appreciate any guidance on best practices or supported patterns for playlist playback.

Thank you!

[sipsorcery]

I suspect using the FFmpegFileSource is overkill in this case. Did you spot the AudioExtraSource class and the SendAudioFromStream method? It's pure C#, no FFmpeg binaries required. You will need to convert your audio files into an appropriate format but that's probably be easier than dealing with FFmpeg installs.

[RezaBagheri8]

Thanks for your advice, I'll check it out.