![]() When we set a higher keyframe value, it will make the video clearer and reduce transmission artifacts. Keyframe is different from a delta frame. On the other hand, there is a delta frame, which is a “difference” frame that provides an incremental change from the previous frame. When a 60-frame-per-second video is recorded with a keyframe interval of 5, every 300 frames a keyframe is made. Keyframes are points in the video where the entire frame is sent instead of just the differences from the previous frame. A value above 4 will cause the stream to lag a lot as it will take higher bandwidth. For a 30-frame-per-second video, the keyframe interval value should not exceed 4. If a streamer is streaming a 1080p video in 25 or 30 fps then a keyframe interval value of 2 is optimal.Īs in this situation, a keyframe interval of 2 means that it takes at most 2 seconds for the viewers to catch up to a point where they can properly display the feed. ![]() This value is not good for streaming, for streaming a keyframe interval value should be set according to the frame rate and bitrate of the stream. The value of 0 or automatic is usually around 8 seconds. The keyframe interval value of 0 means that the stream is set to automatic instead of 0 seconds. The correct keyframe interval is set based on the streamer and their requirements from a stream. How to set the correct keyframe interval? But the optimal keyframe interval value can vary in different scenarios.įor streaming, a higher keyframe interval is not needed but while recording a higher keyframe interval should be selected. So, in the short term, a lower keyframe interval value will affect the video quality negatively and a higher keyframe value should affect the video quality positively. However, in return, it will take less processing power to finish the job. On the other hand, a lower keyframe interval value will cause more artifacts. A higher keyframe interval value will make the video more stable and essen the artifacts.īut a higher keyframe interval will need more bandwidth and more GPU power as it needs to compress more bits per second. ![]() Setting the right keyframe interval is very important. How does keyframe interval affect video quality? While streaming, a lower keyframe interval is usually recommended. It saves a lot of time and puts less pressure on the computer to decode a video. For a 30-frame-per-second video with the keyframe interval set to 2 seconds, every 60 frames a frame or an image will be rendered. If a 30-frame-per-second video file is given, 30 frames are being shown in a second. For example, a keyframe interval value of 2 means that a full video frame will be rendered every 2 seconds. Keyframes are points in a video where the entire frame is sent instead of just the differences from the previous frame. What is the importance of keyframe intervals in streaming?.How to set the correct keyframe interval?.How does keyframe interval affect video quality?.Note that ingestion errors can cause incorrect GOP (group of pictures) sizes. The current keyframe frequency is 8.3 seconds. Currently, keyframes are not being sent often enough, which will cause buffering. Please use a keyframe frequency of four seconds or less. The current keyframe frequency is 7.9 seconds. I found the keyframe setting in OBS studio and it was set to "auto" (which was 0) while I was getting this message, then I changed it to "2" and it made no difference. ![]() So I suppose I should just ignore it? The OCD in me is screaming that that can't be right. Interesting to note, the people that were on helping me test said that even when it was red, they could hear and see me fine. Windows 10 64bit, using a headset/mic.īasically, things start out good (green "stream health") but after a minute or two go bad (red "stream health"), and I get that bad keyframe message. I am using OBS studio streaming to youTube. If any of you know things, please teach me. So here is what is happening when I am streaming. ![]()
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