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Bitrate difference

Open CristianGrecu opened this issue 1 year ago • 11 comments

Hello, I am not 100% sure this is a real problem, so I apologise if this is a waste of time. I've recently noticed that the bitrate that the top right stats panel shows is way lower than normal. Streams that used to show 9 Mbps now show 4-5. A lot of streams seem to be at even lower values like 3 Mbps. Only a few IRL streams show normal values like 7 Mbps. I checked on a PC using Chrome and the bitrates are much higher as expected. I'm not sure if there is an actual difference in image quality because the displays that I use are so different vs a large TV.

I am not a software developer so I have no idea if Twitch started messing with some codecs implementing the AV1 support, or if there's anything wrong to begin with.

Thank you in advance!!

CristianGrecu avatar Feb 21 '24 00:02 CristianGrecu

Is a Twitch bug, they are providing the wrong bitrate for lives

If you go to the VOD of the same Live you can see the proper value

I expect them to fix this but technically they may not, so I will have to come up with a workaround as this messes up the auto playback that is bitrate base as it depends on analysing the internet available bandwidth vs bitrate to determinate what quality to pick.

fgl27 avatar Feb 21 '24 13:02 fgl27

The above fixes it for now, I will let this open so I can improve in the future

the above was pushed to the app just close and reopen it so the app update it self

fgl27 avatar Feb 21 '24 15:02 fgl27

if any other related issue is found let me know here

fgl27 avatar Feb 21 '24 15:02 fgl27

Thank you!

CristianGrecu avatar Feb 21 '24 23:02 CristianGrecu

Just to clarify: the bitrate is still displayed incorrectly, just the choice of quality logic has been fixed, correct?

RikuXan avatar Mar 03 '24 22:03 RikuXan

Just to clarify: the bitrate is still displayed incorrectly, just the choice of quality logic has been fixed, correct?

the bitrate of affected streams for the source stream is approximated but that isn't incorrect.

fgl27 avatar Mar 04 '24 13:03 fgl27

Ah sorry. I had a few streams where the displayed bitrate was still surprisingly low. But if there is no accurate information given out by Twitch anymore an approximation is all you can do.

RikuXan avatar Mar 04 '24 20:03 RikuXan

For now yes, from the streams that I checked the diff is around 0.5 to 1 Mbps

To check is simple you just open the vod if there one and compare.

For some wild reason the vod values are fine.

also this seems a issue only from a few country's, for example some us stream are affected but eu of the same type resolution fps aren't.

fgl27 avatar Mar 04 '24 21:03 fgl27

Hello again, it seems that the problem is back, but only for specific channels this time. I've found quite a few examples that show 3.59 Mbps while live, but 8.76 while watching the VOD. I only watch at source quality, but I guess it could affect the people using "auto".

CristianGrecu avatar Mar 08 '24 22:03 CristianGrecu

That isn't a problem

As long the source bitrate is bigger then the rest auto playback will just work.

Nothing I can do if all bitrates not just the source one are fucked

fgl27 avatar Mar 08 '24 23:03 fgl27

Oh, I see, I've never used anything lower than source or "auto", so I didn't even think about checking the values. Thank you!

CristianGrecu avatar Mar 08 '24 23:03 CristianGrecu