The VideoLAN Forums

Posted: **23 Oct 2020 15:19**

Hello,

Is there a faster way to extract the audio from a video than playing the video and intercepting the PCM data in the audio play callback?
Basically, if I have a video which is 30 minutes long, how do I get the audio track without having to wait for 30 minutes?
For example, can I force the lib to send me the next audio buffer, then the next etc... or change the sample rate to be higher so I get more data per buffer?

(I am using libVLCSharp.WinForms in case it matters...)

Thank you!

Posted: **26 Oct 2020 08:41**

Basically, if I have a video which is 30 minutes long, how do I get the audio track without having to wait for 30 minutes?

Good question.. guess we need some specific docs on that.

Code: Select all

--sout-smem-time-sync, --no-sout-smem-time-sync 
                                 Time Synchronized output
                                 (default enabled)
          Time Synchronisation option for output. If true, stream will render
          as usual, else it will be rendered as fast as possible.

from https://wiki.videolan.org/VLC_command-line_help

I've never tried this though.

(I am using libVLCSharp.WinForms in case it matters...)

It doesn't matter at all, libvlc is the underneath library used.

The VideoLAN Forums

Extracting the audio track from a video faster

Extracting the audio track from a video faster

Re: Extracting the audio track from a video faster