Answer by Richard Lanham · Jan 03, 2014 at 01:05 AM
INFO server comment - # long: advanced gop settings: use adaptive B-frames placement or not
INFO server comment - mainconcept.adaptive_b_frames: 1
In Wowza Media Server® 3.5.0 and later, Wowza Transcoder AddOn supports bi-directional frames (B-frames) when using the default transcoder implementation and the Main Profile. B-frame generation is turned off by default. To enable B-frames for a given <Encode> block, add the following parameter definition to the Video/Parameters container in the <Encode> block in your transcoder template:
The Value property specifies the number of B-frames to generate between each P-frame. The number of B-frames generated is always one less than the specified value. So for example, a value of 2 instructs the encoder to generate a single B-frame between each P-frame, a value of 3 instructs the encoder to generate two B-frames between each P-frame, and so on. A value of 1 instructs the encoder to generate zero B-frames between each P-frame, which effectively disables the feature.
Note: B-frame support is only available when using the default encoder implementation and the Main Profile.
It's not supported when using Intel Quick Sync, NVIDIA CUDA, or NVIDIA NVENC accelerated encoding.
Answer by Richard Lanham · Jan 03, 2014 at 06:23 PM
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