An egui video widget over moq-media, plus a debug overlay.

moq_video::render::Renderer hands back a wgpu::Texture per frame. This crate registers that texture with egui and draws it.

VideoTrackView wraps a decoded VideoTrack and polls it. Call render in the draw loop and it takes the newest frame, uploads it, requests a repaint if one arrived, and returns an egui::Image plus the frame's timestamp.

use moq_media_egui::VideoTrackView;

let mut view = VideoTrackView::new_wgpu(&ctx, "remote", track, Some(render_state));

let (image, timestamp) = view.render(&ctx, available_size);
ui.add(image);

FrameView is the same upload machinery without a track, for frames that come from somewhere else. irl publish --preview uses it to draw raw camera frames.

Both need a wgpu render state. A view built without one logs a warning and draws a placeholder, because upstream exposes pixels only through the wgpu pipeline.

create_egui_wgpu_config() builds the egui_wgpu::WgpuConfiguration to pass eframe. On Linux it selects the Vulkan backend and requests VULKAN_EXTERNAL_MEMORY_DMA_BUF when the adapter advertises it, which turns on zero-copy DMA-BUF import for PipeWire screen capture. eframe would not otherwise ask for it. Elsewhere it returns the default.

overlay::DebugOverlay draws a translucent bar along the bottom of a video tile with one clickable section per StatCategory: Net, Capture, Render, and Time. Clicking opens a detail panel with values, threshold colours, and sparklines. The Time category also draws a ten-second timeline of frame arrivals, A/V offset, buffer depth, and round-trip time.

wgpu-render is the only one, and it is on by default. wgpu is deliberately not a direct dependency: every wgpu type this crate names comes from moq_media::video::render::wgpu, the exact build the renderer links, so a texture it hands back can never be a different wgpu major than the one this crate draws with.