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August 17, 2023 07:43
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PipeWire Screencast Info
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#!/bin/sh | |
pw-dump | jq -r '[.[] | select(.info.props."node.name" | IN("firefox","gnome-shell","kwin_wayland","obs","xdg-desktop-portal-wlr","xdp-screencast.py")) | .id] as $pw_node_ids | [ .[] | select(.info.props."node.id" | IN($pw_node_ids[])) | .id ] as $pw_port_ids | .[] | select(.id | IN(($pw_node_ids + $pw_port_ids)[]))' |
Ah, this is fixed in Firefox Beta 117.0b8, so it was clearly a problem on their side. I initially thought it was https://bugzilla.mozilla.org/show_bug.cgi?id=1841851, but updating regular firefox to 116.0.3 did not fix it. Either way, apologies for the noise, I was just frantically trying to debug the breakage :)
Nice. Glad you got it sorted.
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Finally found the culprit: an assertion is failing over on PipeWire:
I also found that OBS can screenshare just fine. It seems like jumping from the "preview" to the actual screenshare on firefox/chromium is what causes the error. I filed a pipewire issue to see if the failed assertion can get us anywhere: https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/3428