| ffmpeg -f video4linux2 -thread_queue_size 512 -input_format mjpeg -video_size hd720 -i /dev/video0 \ | |
| -f alsa -thread_queue_size 512 -i hw:1,0,0 \ | |
| -acodec mp3 -async 1 -vcodec libx264 -preset veryfast output.mp4 \ | |
| -acodec mp3 -ar 44100 -vcodec libx264 -preset ultrafast -maxrate 1984k -bufsize 3968k -g 60 -f flv rtmp://x.rtmp.youtube.com/live2/yourid |
Streaming your Linux desktop to Youtube and Twitch via Nvidia's NVENC and VAAPI:
Considerations to take when live streaming:
The following best practice observations apply when using a hardware-based encoder for live streaming to any platform:
Set the buffer size (-bufsize:v) equal to the target bitrate (-b:v). You want to ensure that you're encoding in CBR mode.
Set up the encoders as shown:
| #!/bin/bash | |
| # ================================================================== | |
| # This script will compile and install a static ffmpeg build with | |
| # support for NVENC in Ubuntu. Developed in Ubuntu 22.04 LTS, | |
| # with NVIDIA Drivers v510.73 and CUDA v11.6 | |
| # It assumes NVIDA drivers are installed and that you have a | |
| # CUDA-compatible GPU. You can check installed drivers with: | |
| # $ apt list *nvidia-driver-* | grep installed | |
| # $ nvidia-smi | |
| # ================================================================== |
| <?php | |
| /** | |
| * Compare two arrays and return a list of items only in array1 (deletions) and only in array2 (insertions) | |
| * | |
| * @param array $array1 The 'original' array, for comparison. Items that exist here only are considered to be deleted (deletions). | |
| * @param array $array2 The 'new' array. Items that exist here only are considered to be new items (insertions). | |
| * @param array $keysToCompare A list of array key names that should be used for comparison of arrays (ignore all other keys) | |
| * @return array[] array with keys 'insertions' and 'deletions' | |
| */ | |
| public static function arrayDifference(array $array1, array $array2, array $keysToCompare = null) { |