No Sound

[paweldurga]

The browser opened by chromedp does not play the video with sound, but the browser opened by double-clicking has sound.

What versions are you running?

$ go list -m github.com/chromedp/chromedp
github.com/chromedp/chromedp v0.9.1
$ google-chrome --version
115.0.5790.102
$ go version
go version go1.20.2 darwin/arm64

What did you do? Include clear steps.

package main

import (
	"context"
	"log"

	"github.com/chromedp/chromedp"
)

func main() {
	options := []chromedp.ExecAllocatorOption{
		chromedp.Flag("headless", false),
		chromedp.UserAgent("Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36"), // 设置User-Agent
	}
	options = append(chromedp.DefaultExecAllocatorOptions[:], options...)
	ctx, cancel := chromedp.NewExecAllocator(
		context.Background(),
		options...,
	)
	ctx, cancel = chromedp.NewContext(
		ctx,
		chromedp.WithLogf(log.Printf),
	)
	defer cancel()

	// 导航到指定的 URL
	err := chromedp.Run(ctx, chromedp.Navigate("https://www.youtube.com/watch?v=oNTZ63xrc60"))
	if err != nil {
		log.Fatal(err)
	}
	select {}
}

What did you expect to see?

This video has sound.

What did you see instead?

This video has no sound.

[paweldurga]

@ZekeLu i need your help :)

[ZekeLu]

Hi. Try adding the following option:

chromedp.Flag("mute-audio", false)

See #845.

[aohanhongzhi]

you will know why from the source code

// DefaultExecAllocatorOptions are the ExecAllocator options used by NewContext
// if the given parent context doesn't have an allocator set up. Do not modify
// this global; instead, use NewExecAllocator. See [ExampleExecAllocator].
//
// [ExampleExecAllocator]: https://pkg.go.dev/github.com/chromedp/chromedp#example-ExecAllocator
var DefaultExecAllocatorOptions = [...]ExecAllocatorOption{
	NoFirstRun,
	NoDefaultBrowserCheck,
	Headless,

	// After Puppeteer's default behavior.
	Flag("disable-background-networking", true),
	Flag("enable-features", "NetworkService,NetworkServiceInProcess"),
	Flag("disable-background-timer-throttling", true),
	Flag("disable-backgrounding-occluded-windows", true),
	Flag("disable-breakpad", true),
	Flag("disable-client-side-phishing-detection", true),
	Flag("disable-default-apps", true),
	Flag("disable-dev-shm-usage", true),
	Flag("disable-extensions", true),
	Flag("disable-features", "site-per-process,Translate,BlinkGenPropertyTrees"),
	Flag("disable-hang-monitor", true),
	Flag("disable-ipc-flooding-protection", true),
	Flag("disable-popup-blocking", true),
	Flag("disable-prompt-on-repost", true),
	Flag("disable-renderer-backgrounding", true),
	Flag("disable-sync", true),
	Flag("force-color-profile", "srgb"),
	Flag("metrics-recording-only", true),
	Flag("safebrowsing-disable-auto-update", true),
	Flag("enable-automation", true),
	Flag("password-store", "basic"),
	Flag("use-mock-keychain", true),
}


// Headless is the command line option to run in headless mode. On top of
// setting the headless flag, it also hides scrollbars and mutes audio.
func Headless(a *ExecAllocator) {
	Flag("headless", true)(a)
	// Like in Puppeteer.
	Flag("hide-scrollbars", true)(a)
	Flag("mute-audio", true)(a)
}

point

	Flag("mute-audio", true)(a)

[mi1wei]

thank you

[mi1wei]

please close the issue