github.com/pion/webrtc/v3@v3.2.24/examples/bandwidth-estimation-from-disk/README.md (about)

     1  # bandwidth-estimation-from-disk
     2  bandwidth-estimation-from-disk demonstrates how to use Pion's Bandwidth Estimation APIs.
     3  
     4  Pion provides multiple Bandwidth Estimators, but they all satisfy one interface. This interface
     5  emits an int for how much bandwidth is available to send. It is then up to the sender to meet that number.
     6  
     7  ## Instructions
     8  ### Create IVF files named `high.ivf` `med.ivf` and `low.ivf`
     9  ```
    10  ffmpeg -i $INPUT_FILE -g 30 -b:v .3M  -s 320x240   low.ivf
    11  ffmpeg -i $INPUT_FILE -g 30 -b:v 1M   -s 858x480   med.ivf
    12  ffmpeg -i $INPUT_FILE -g 30 -b:v 2.5M -s 1280x720  high.ivf
    13  ```
    14  
    15  ### Download bandwidth-estimation-from-disk
    16  
    17  ```
    18  go get github.com/pion/webrtc/v3/examples/bandwidth-estimation-from-disk
    19  ```
    20  
    21  ### Open bandwidth-estimation-from-disk example page
    22  [jsfiddle.net](https://jsfiddle.net/a1cz42op/) you should see two text-areas, 'Start Session' button and 'Copy browser SessionDescription to clipboard'
    23  
    24  ### Run bandwidth-estimation-from-disk with your browsers Session Description as stdin
    25  The `output.ivf` you created should be in the same directory as `bandwidth-estimation-from-disk`. In the jsfiddle press 'Copy browser Session Description to clipboard' or copy the base64 string manually.
    26  
    27  Now use this value you just copied as the input to `bandwidth-estimation-from-disk`
    28  
    29  #### Linux/macOS
    30  Run `echo $BROWSER_SDP | bandwidth-estimation-from-disk`
    31  #### Windows
    32  1. Paste the SessionDescription into a file.
    33  1. Run `bandwidth-estimation-from-disk < my_file`
    34  
    35  ### Input bandwidth-estimation-from-disk's Session Description into your browser
    36  Copy the text that `bandwidth-estimation-from-disk` just emitted and copy into the second text area in the jsfiddle
    37  
    38  ### Hit 'Start Session' in jsfiddle, enjoy your video!
    39  A video should start playing in your browser above the input boxes. When `bandwidth-estimation-from-disk` switches quality levels it will print the old and new file like so.
    40  
    41  ```
    42  Switching from low.ivf to med.ivf
    43  Switching from med.ivf to high.ivf
    44  Switching from high.ivf to med.ivf
    45  ```
    46  
    47  
    48  Congrats, you have used Pion WebRTC! Now start building something cool