+ \hline
+ \end{tabular}
+\end{center}
+
+These same steps have been verified to work for creating Dailymotion videos -- however, the created files must be renamed before uploading to change the youtube extension to webm instead for Dailymotion.
+
+\subsection{VP9 parameters}%
+\label{sub:vp9_parameters}
+\index{rendering!VP9 parameters}
+
+\textsc{VP9}\protect\footnote{credit Frederic Roenitz} is a video codec licensed under the BSD license and is
+considered open source,
+% Sisvel Announces AV1 Patent Pool, March 10, 2020
+% https://www.streamingmedia.com/Articles/ReadArticle.aspx?ArticleID=139636
+% Webm / VP9 is a media file format which is free to use under the
+% BSD license and is open-source; thus there are no licensing
+% issues to be concerned about.
+the \textsc{Webm} container is based on \textsc{Matroska} for video
+and \textsc{Opus} for audio. There are some common \textsc{VP9} rendering
+options files that support creation of video for YouTube,
+Dailymotion, and other online video services.
+
+YouTube easy startup steps are documented above.
+
+Below is one of the \textsc{VP9} rendering options file with documentation for specifics:
+
+\textbf{webm libvpx-vp9}
+
+from {\small \url{https://developers.google.com/media/vp9/settings/vod/}}
+
+1280x720 (24, 25 or 30 frames per second)
+
+Bitrate (bit rate)
+
+\textsc{VP9} supports several different bitrate modes:
+
+\textit{mode:}
+
+\begin{tabular}{p{6cm}p{10cm}}
+ \hline
+ Constant Quantizer (Q) & Allows you to specify a fixed quantizer value; bitrate will vary \\
+ Constrained Quality (CQ) & Allows you to set a maximum quality level. Quality may vary within bitrate parameters\\
+ Variable Bitrate (VBR) & Balances quality and bitrate over time within constraints on bitrate\\
+ Constant Bitrate (CBR) & Attempts to keep the bitrate fairly constant while quality varies\\
+ \hline
+\end{tabular}
+
+CQ mode is recommended for file-based video (as opposed to streaming). The following FFMpeg command-line parameters are used for CQ mode:
+
+\textit{FFMpeg}:
+
+\begin{center}
+ \begin{tabular}{p{4cm}p{10cm}}
+ \hline
+ -b:v <arg> & Sets target bitrate (e.g. 500k)\\
+ -minrate <arg> & Sets minimum bitrate.\\
+ -maxrate <arg> & Sets maximum bitrate.\\
+ -crf <arg> & sets maximum quality level. Valid values are 0-63, lower numbers are higher quality.\\
+ \hline