UDP streams lagging after transcoding

[Aleksandar_Stojcevsk]

Hi,

I have 20 smooth incoming UDP streams. I use transcoder with 3 bitrates (720p, 480p and 240p)

My configuration is:

-Ubuntu Server 18.04

• NVIDIA Quadro K5000

• Intel® Core™ i7-8700K CPU @ 3.70GHz

• RAM 16GB

After transcoding, output streams are lagging.

-CPU usage (70%)

-GPU usage (1800MB/16000MB)

I tried to disable 2 bitrate from transcoder (480p and 240p), so i transcode just one bitrate (720p) but also streams are lagging.

[Karel_Boek]

Lagging is most likely because of resource issues.

What’s the CPU usage? It could be the de-coding process that takes much CPU if your transcoding template hasn’t been set up corrrectly. You can set the de-coding to either CUDA or QuickSync.

Also, make sure you use CUDA or QuickSync for the scaling. I haven’t seen the scaling parameter in the Streaming Engine panel, so you must edit the template XML manually. The scaling property is at the bottom of the XML.