Muxing halts when no audio stream

[Nirbheek Chauhan]

On Sat, Mar 19, 2022 at 9:15 PM Peter Biro via gstreamer-devel
<gstreamer-devel at lists.freedesktop.org> wrote:
> I want to improve the reliability by making the file writing continuous regardless if I have the audio or not (by making the audio is optional). I already tried to add an audio mixer which would mix a muted audio stream (audiotestsrc wave=silence) but that adds extra resource usage and I feel that its more like a workaround since the root cause is that the muxer is waiting for the audio stream.
>

This is actually the correct solution. You can eliminate most of the
overhead by muting the audiomixer sinkpad on which silence is
arriving.

I don't know if the matroska format supports GAP-like instructions for
audio or video, but I would imagine it's unlikely.

Cheers,
Nirbheek