YouTube don't work anymore

[xstable]

QMPlay2: 26.06.27-git-b97dcf00 (x86_64, wayland)

1. I've started QMPlay2 in CLi to get more feedback about the issue.
2. If I go to YouTube Tab, I search for "after the fall kimo sounds" and got results
3. Click on any video do not start any video. In statusbar flaskes a message for a second like: "Couldn't be opend.... ffmpeg ... (some url)
4. In CLI you see:

[https @ 0x7fc3b4001fc0] HTTP error 403 Forbidden
[https @ 0x7fc3b4002180] HTTP error 403 Forbidden
[01 Jul 2026 11:47:07.033] Konnte nicht geöffnet werden: FFmpeg://{[https://rr2---sn-5hne6nsk.googlevideo.com/videoplayback?expire=1782920824&ei=GOJEarmqM5rR6dsP_KXo2AQ&ip=2a02%3A908%3Ae942%3Ac720%3A9b71%3A92f7%3Ae097%3Ac54c&id=o-AP8Y2-SSvlmOM4MTe7-6xdmdX5zW9hU6yjz0u3ZQWXjY&itag=251&source=youtube&requiressl=yes&xpc=EgVo2aDSNQ%3D%3D&cps=400&met=1782899224%2C&mh=Xz&mm=31%2C29&mn=sn-5hne6nsk%2Csn-oj5hn5-5t&ms=au%2Crdu&mv=m&mvi=2&pl=44&rms=au%2Cau&initcwndbps=3551250&siu=1&bui=ARmQxEU0wCVBzGylmQzgFiEC-od8k9tILQjmTugEYR-g0Zb30_z61mo0MgMpSJZFH5WE5kMLYg&spc=SQ-umqoKMK5OmZfuIqdVExmPmdc&vprv=1&svpuc=1&mime=audio%2Fwebm&ns=BhgJYeF25dkwNRHTfoLt3TkW&rqh=1&gir=yes&clen=3607850&dur=207.201&lmt=1781010922735317&mt=1782898871&fvip=1&keepalive=yes&lmw=1&fexp=51565115&c=TVHTML5&sefc=1&txp=5532534&n=UVdhIfzcLQENRQ&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cxpc%2Csiu%2Cbui%2Cspc%2Cvprv%2Csvpuc%2Cmime%2Cns%2Crqh%2Cgir%2Cclen%2Cdur%2Clmt&sig=AHEqNM4wRQIgOLwRsB_C3LuZ7DoC156UThHH9zteSM5bbO5dtSb98eACIQCV69xv5uiPrHP4bJazepFNbxXR1FrQDhlJAfSvseFejA%3D%3D&lsparams=cps%2Cmet%2Cmh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Crms%2Cinitcwndbps&lsig=APaTxxMwRQIhALHc_DelWbtdc0obTATg_L22aj8Bnhu38vnK5N_TkBFNAiAEM1RTScGxIIlTLlIuKgYar0Lo3UfmcVnILHL40rI3cA%3D%3D][https://rr2---sn-5hne6nsk.googlevideo.com/videoplayback?expire=1782920824&ei=GOJEarmqM5rR6dsP_KXo2AQ&ip=2a02%3A908%3Ae942%3Ac720%3A9b71%3A92f7%3Ae097%3Ac54c&id=o-AP8Y2-SSvlmOM4MTe7-6xdmdX5zW9hU6yjz0u3ZQWXjY&itag=308&aitags=133%2C134%2C135%2C136%2C160%2C242%2C243%2C244%2C247%2C278%2C298%2C299%2C302%2C303%2C308%2C315%2C394%2C395%2C396%2C397%2C398%2C399%2C400%2C401&source=youtube&requiressl=yes&xpc=EgVo2aDSNQ%3D%3D&cps=400&met=1782899224%2C&mh=Xz&mm=31%2C29&mn=sn-5hne6nsk%2Csn-oj5hn5-5t&ms=au%2Crdu&mv=m&mvi=2&pl=44&rms=au%2Cau&initcwndbps=3551250&siu=1&bui=ARmQxEU0wCVBzGylmQzgFiEC-od8k9tILQjmTugEYR-g0Zb30_z61mo0MgMpSJZFH5WE5kMLYg&spc=SQ-umqoKMK5OmZfuIqdVExmPmdc&vprv=1&svpuc=1&mime=video%2Fwebm&ns=BhgJYeF25dkwNRHTfoLt3TkW&rqh=1&gir=yes&clen=66493913&dur=207.166&lmt=1781017011848174&mt=1782898871&fvip=1&keepalive=yes&lmw=1&fexp=51565115&c=TVHTML5&sefc=1&txp=5532534&n=UVdhIfzcLQENRQ&sparams=expire%2Cei%2Cip%2Cid%2Caitags%2Csource%2Crequiressl%2Cxpc%2Csiu%2Cbui%2Cspc%2Cvprv%2Csvpuc%2Cmime%2Cns%2Crqh%2Cgir%2Cclen%2Cdur%2Clmt&sig=AHEqNM4wRAIgW7YQ1GiWHqyCU2Pow-8VHKgUOI962UHT4wS1cegmImMCIGS_S1KeTUGJVsuvB-X7I0HFqDv87hkNwNuIpOBiWlBg&lsparams=cps%2Cmet%2Cmh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Crms%2Cinitcwndbps&lsig=APaTxxMwRQIhALHc_DelWbtdc0obTATg_L22aj8Bnhu38vnK5N_TkBFNAiAEM1RTScGxIIlTLlIuKgYar0Lo3UfmcVnILHL40rI3cA%3D%3D]}

But if I copy the URL (https://rr2---sn-5hne6nsk.googlevideo.com/videoplayback?expire=1782920824&ei=GOJEarmqM5rR6dsP_KXo2AQ&ip=2a02%3A908%3Ae942%3Ac720%3A9b71%3A92f7%3Ae097%3Ac54c&id=o-AP8Y2-SSvlmOM4MTe7-6xdmdX5zW9hU6yjz0u3ZQWXjY&itag=251&source=youtube&requiressl=yes&xpc=EgVo2aDSNQ%3D%3D&cps=400&met=1782899224%2C&mh=Xz&mm=31%2C29&mn=sn-5hne6nsk%2Csn-oj5hn5-5t&ms=au%2Crdu&mv=m&mvi=2&pl=44&rms=au%2Cau&initcwndbps=3551250&siu=1&bui=ARmQxEU0wCVBzGylmQzgFiEC-od8k9tILQjmTugEYR-g0Zb30_z61mo0MgMpSJZFH5WE5kMLYg&spc=SQ-umqoKMK5OmZfuIqdVExmPmdc&vprv=1&svpuc=1&mime=audio%2Fwebm&ns=BhgJYeF25dkwNRHTfoLt3TkW&rqh=1&gir=yes&clen=3607850&dur=207.201&lmt=1781010922735317&mt=1782898871&fvip=1&keepalive=yes&lmw=1&fexp=51565115&c=TVHTML5&sefc=1&txp=5532534&n=UVdhIfzcLQENRQ&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cxpc%2Csiu%2Cbui%2Cspc%2Cvprv%2Csvpuc%2Cmime%2Cns%2Crqh%2Cgir%2Cclen%2Cdur%2Clmt&sig=AHEqNM4wRQIgOLwRsB_C3LuZ7DoC156UThHH9zteSM5bbO5dtSb98eACIQCV69xv5uiPrHP4bJazepFNbxXR1FrQDhlJAfSvseFejA%3D%3D&lsparams=cps%2Cmet%2Cmh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Crms%2Cinitcwndbps&lsig=APaTxxMwRQIhALHc_DelWbtdc0obTATg_L22aj8Bnhu38vnK5N_TkBFNAiAEM1RTScGxIIlTLlIuKgYar0Lo3UfmcVnILHL40rI3cA%3D%3D) and open it in browser, stream starts immediately

[zaps166]

no issues here

[xstable]

How can I figure out, why this happen out of the blue? Any way to debug this?

BTW: Found out something new. If I remove the checkbox from "Cookies from browser" it work again:

[zaps166]

You can't debug cookies in QMPlay2 without modifying the source code. Generally yt-dlp should read cookies from your browser and pass it to QMPlay2, and QMPlay2 should pass it to FFmpeg (which is the network engine of QMPlay2).

If you want to debug, look at code here auto cookies = formats["http_headers"]["Cookie"].toString(); and IIRC it should be passed here Functions::prepareFFmpegUrl and here if (av_opt_get(m_ctx, "cookies", AV_OPT_SEARCH_CHILDREN, (uint8_t **)&cookies) >= 0).