The VideoLAN Forums

Hello! It's been since version 3.0.10 since I last posted here because 3.0.11 was awesome, perhaps like then I've discovered a bug with 3.0.12? (I post because I care - not to complain) <3
I'll just start with saying I loved Win64 3.0.11 it has been bug free and everything just worked from the start.
3.0.12 right off the bat installation disregards my request to "keep my settings" not a big deal but annoying. It also deleted my custom conversion profiles again not a big deal, I can fix it but here's what I can't figure out:

Summary:
3.0.12 changes resolution during the stream on some videos. This has the effect of causing a brief stutter or lag in the video while watching, and if saving or converting causes incompatibility with other software due to the resolution changing.

To reproduce: open 3.0.11 and 3.0.12 side by side and ctrl J on both and keep an eye on the video resolution.
I noticed it watching the following PBS Nature stream as an example: https://ga.video.cdn.pbs.org/videos/nat ... 1080p.m3u8
(This link may expire at some point.)

notice that in version 3.0.12 the (approx 7 seconds) blue PBS logo segment is a lower resolution than the rest of the video whereas in 3.0.11 it is 1920x1080 (how it is supposed to be) - the settings pertaining to video are default in this example.

So, what is the problem here? Is it a setting I can change for 3.0.11 behavior or is it like last time and there's something weird going on in a demuxer or something?

Try to set Adaptive Logic: [Highest Bandwidth/Quality]
https://forum.videolan.org/viewtopic.ph ... 93#p513839

I played the video from start to finish and the lower resoluion is restricted to just the opening logo.


(click to enlarge)

The rest of the video retains its 1080p dimensions.



(click to enlarge)

I don't know how important it is to you that the logo matches the actual video, but considering that there's nothing special about it maybe it might be worth your while simply skipping the logo altogether.

Thanks for the replies!

mederi,
unless I'm mistaken both versions are set to "Preferred video resolution: best available" by default. So in my mind this should not be able to make a difference unless it is broken between versions?
You're certainly right this was the first thing I thought to check and I did try setting it to "Full HD 1080P" but it made no difference.

Hitchhiker,
You are correct that is what I experienced also: 3.0.12 changes resolution after the logo to 1920x1080 and 3.0.11 maintains 1920x1080 throughout - including the logo.
It is important that the entire video is displayed at the same resolution because as I said: "saving or converting causes incompatibility with other software due to the resolution changing."
If the resolution changes I have to either omit it (the logo in this case) or recompress the video which is time consuming and reduces quality.

It's not a big deal, I can keep using 3.0.11 but why is 3.0.12 it doing this? Seems like undesirable behavior.

Tools > Preferences > Show settings=All > Input/Codecs \ Demuxers \ Adaptive: Adaptive Logic [Highest Bandwidth/Quality]

mederi,
Thank you, yes that does seem to fix it in my first test, sorry I misunderstood your first post.
Will continue testing and make sure!
Thanks so much for your time!

reporting back with good results
3 different m3u8 videos have now played flawlessly without changing resolution after starting, so that fixes it for me thanks so much mederi!