Bitrate drops

PROZAC

New Member
help please. For 3 days I can't understand what's the matter, I searched through all the OBS settings. The bitrate drops, I set 25k, and the bm lowers to a red value of 11k or 2k or 5k.
 

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FerretBomb

Active Member
If you are using adaptive bitrate, this is because your connection cannot maintain a constant minimum throughput to your destination server.
Speedtest sites test momentary PEAK speed, and ignore MINIMUM speed (which livestreaming relies on).
If the connection square turns red, your chosen bitrate is higher than what your connection can send to the remote server smoothly. Red means the local transmit buffer is completely full, and it cannot be sent fast enough because of your constant network speeds.
 

PROZAC

New Member
If you are using adaptive bitrate, this is because your connection cannot maintain a constant minimum throughput to your destination server.
Speedtest sites test momentary PEAK speed, and ignore MINIMUM speed (which livestreaming relies on).
If the connection square turns red, your chosen bitrate is higher than what your connection can send to the remote server smoothly. Red means the local transmit buffer is completely full, and it cannot be sent fast enough because of your constant network speeds.
I have excellent internet speed. 500 Mbps download and 500 Mbps upload
 

FerretBomb

Active Member
I have excellent internet speed. 500 Mbps download and 500 Mbps upload
Which does not guarantee a solid connection to any given server, or that it will deliver that speed at all times, or without packet loss. This IS a network connection issue between you and your chosen ingest server.
 

konsolenritter

Active Member
@PROZAC Please learn to read your own speed test. It shows clearly for each type of upload measurement a range of possible outcome. For large sized (10MB) ones it goes from roughly 22mbps up to 55mbps.

For small packets (100kB test) it shows even lower values, ranging from 8 till 20 mbps, with merely 13 to 20mbps.
So long for a 100mbps upstream (and no 500, as you told).

Hence a youtube upstream may be split into smaller packets the smaller test packets may reasonable represent your situation. And if your Youtubes ingestion server doesn't sit in Moscow it may be even worse.

So... My hint would be simple like this:

1. Disable adaptive bitrate (if enabled).
2. Start with 8mbps and make test streams over two till five minutes. Observe the quality.
3. If it works, step up to 10, 12, 15, 18, 22, 26 mbps.
4. If problems arise, step back one step (at least). And keep calm.

Be lucky about every step that works well. Be thankful for that, totally leaving aside the "proud" of how fast your locally connection seems to be. The internet is a huge thing, much bigger than the local link between you and your provider. What counts is how fast the complete chain of ip links between you and the ingestion server is.

Best regards to... Kasan Казан - interesting. :D
 
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