How should I set the ffmpeg parameters to avoid delay?

To reduce delays in FFmpeg, you can try the following methods:

1. Just Down原。

ffmpeg -re -i input.mp4 output.mp4

1. Adjust the bitrate and frame rate of the output file to match those of the input file. For example, if the input file has a frame rate of 30fps, you can use the following command to set the frame rate of the output file to 30fps:

ffmpeg -i input.mp4 -r 30 output.mp4

One option could be:
You can set the video bitrate of the output file using the -b:v parameter, for example:

ffmpeg -i input.mp4 -b:v 2M output.mp4

1. synchronization of vertical refresh率
2. zero, one, two

ffmpeg -i input.mp4 -vsync 0 output.mp4

1. -size of the buffer

ffmpeg -i input.mp4 -bufsize 10M output.mp4

These methods may need to be adjusted and tried according to specific situations in order to find the best setting that suits your needs.