[GStreamer][WebRTC] increase size of apps max-bytes for video tracks #1595
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The default 200'000 is not enough and leads to frame drops during pipeline buildup.
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eocanha
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Jan 15, 2026
| { | ||
| m_src = makeElement("appsrc"); | ||
| g_object_set(m_src, "is-live", TRUE, "do-timestamp", TRUE, "max-buffers", 2, "max-bytes", 0, nullptr); | ||
| g_object_set(m_src, "is-live", TRUE, "do-timestamp", TRUE, "max-buffers", static_cast<gint64>(2), "max-bytes", static_cast<guint64>(0), nullptr); |
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Note that this isn't actually increasing anything, just tidying up the argument types. Is this intended?
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Also, both casts should be done to guint64, since that's the type used both for max-buffers and for max-bytes in appsrc.
I'm already correcting this in the version that I'm submitting for review upstream.
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https://bugs.webkit.org/show_bug.cgi?id=305576 Reviewed by NOBODY (OOPS!). The default value for max-bytes in 200000 is not enough and leads to frame drops during pipeline buildup. See: WebPlatformForEmbedded/WPEWebKit#1595 This patch increases the buffering size of the appsrc element used for video tracks in GStreamerMediaStreamSource so that it can handle enough buffering to allow for the rest of the pipeline to be built before buffers start to be lost. Types fo max-buffer/max-bytes args in GStreamerVideoDecoderFactory are also enforced as guint64. This seems to be the recommended way to do it according to the GObject documentation[1], [1] https://docs.gtk.org/gobject/method.Object.set.html#description Original author: Eugene Mutavchi <Ievgen_Mutavchi@comcast.com> * Source/WebCore/platform/mediastream/gstreamer/GStreamerMediaStreamSource.cpp: Increase buffering size for video tracks. * Source/WebCore/platform/mediastream/libwebrtc/gstreamer/GStreamerVideoDecoderFactory.cpp: Properly type guint64 parameters.
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Submitted for review upstream as https://bugs.webkit.org/show_bug.cgi?id=305576 |
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The default 200'000 is not enough and leads to frame drops during pipeline buildup.
Also, this PR adds an explicit type cast for max-buffers/max-bytes arguments set in GStreamerVideoDecoderFactory.cpp