I did also try the IOS client. that seems to use .m3u8 streams ?

Just did another test , put the iBook G4 on powersupply and used Ethernet only to get better network speeds than 802.11g.

Then YT.REXX asks me the quality.

if I pick 5. MP4 720P HLS, Mplayer 1.5 will start playing but the audio is out of sync with the video.

if I pick 14. WebM 720P VP9 HLS , I only get audio playing, there is not even a visible Mplayer window (although I can find it in the running Tasks)

Choosing Save or Save/Play instead of Play in the Settings, immediately gives me a notification that Test.AVI has been downloaded but when I click open folder nothing happens.

Also checked if it was saved on the T directory but no Test.AVI to be found.

Selecting 4. MP4 480P HLS, Mplayer 1.5 is capable of keeping audio+video in sync .

I am not complaining here but when I download the lowest 720P version of a Youtube video using yt-dlp on a modern machine, I am able to play that downloaded video back on the iBook G4 using Mplayer 1.5 without any audio/video sync issues.

So I guess my questions boil down to

can I get YT.cfg setup that it always uses IOS + select MP4 HLS either 480P/720P

how can I use the save function to download the MP4 HLS 720P version or these formats

-f 136+139

139 m4a audio only 2 │ 11.14MiB 49k https │ audio only mp4a.40.5 49k 22k low, m4a_dash

136 mp4 1280x720 25 │ 120.48MiB 528k https │ avc1.64001f 528k video only 720p, mp4_dash

[ Edited by Lastic 03.05.2026 - 15:05 ]