Question / Help OBS DynamicBitRate - Question/Understanding

Gohst

Gohst

New Member
Hello all,

I cant figure out what DBR mode in OBS does, i only know ADS (e.g Netflix --> Serversite/Download).

For my understanding (what I have read already in these forums) DBR should lower my Bitrate to enchant my Stream (Upload) that should not be laggy.

But I dont understand what happens here, will I only lose Video Quality?
E.G i stream with 720p will the Video Part in the container set e.g to 480p for a short time?

If we take as reference the VideoContainer what happens with the Video/Audio Stream and the MetaData, once i apply the DBR function in OBS.

Thank you.
 
koala

koala

Active Member
The dynamic bitrate functionality lowers the encoding bitrate, if it detects congestion in the network path. Congestion means data packets that should go out stack up in the outgoing buffer instead of being sent.

Of course lower bitrate reduces quality. The resolution and everything else stays the same, but the video is more blurry and more pixelated. This is considered still better quality than buffering, choppy or slideshow-like video.

The previous algorithm is to drop "unimportant" frames like B-frames if congestion is detected and only send keyframes, which makes the video choppy or slideshow-like.
 
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