5/27/2023 0 Comments Blackmagic web presenter 4kYou will notice that the horizontal lines at the bottom of the image are all visible in the OBS encodings, and barely defined or completely absent in the Web Presenter HD encodings 1,2,3,4, and 7. The only difference is that with Encoding 5 the downscaling to 720p was done at the Streaming encoder stage, where Encoder 6 the scaling was done at the Output (Scaled) output. In the image above, Encodings 5 and 6 were done within OBS. Web Presenter HD vs OBS Scaling - Side-by-Side.png (676.9 KiB) Viewed 5301 times The resulting stream image can be seen in the stream captures 1 and 7. In the image below Ecoding 1 and 7 are identical.įrom the image below you can see that, Encoding 1 (and 7) was originated from a 1080p OBS Base (Canvas) then Output (Scaled) out of OBS as a 1080p image fed to the DeckLink card which fed a 1080p50 SDI signal to the Web Presenter HD which downscaled this input streamed it as 720p30. I recommend downloading the images below. > Downwards vertical shifting of downscaled image The scaling issues when down converting 1080p to 720p with the Web Presenter HD are as follows: To further reduce the workload on the computer, I would prefer the Web Presenter HD to do the downscaling. The computer has a Decklink Mini Monitor 4K. Everything is done in 1080p and, depending on the available internet upload speed at the venue, downscaled to 720p. I recently purchased a Web Presenter HD to reduce the workload on our OBS-based live broadcast computer.
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