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-rw-r--r--Master/texmf-dist/source/latex/media9/media9.tex6
1 files changed, 4 insertions, 2 deletions
diff --git a/Master/texmf-dist/source/latex/media9/media9.tex b/Master/texmf-dist/source/latex/media9/media9.tex
index 9e4f88c82df..d2e30555825 100644
--- a/Master/texmf-dist/source/latex/media9/media9.tex
+++ b/Master/texmf-dist/source/latex/media9/media9.tex
@@ -106,13 +106,15 @@ Flash Player supports the efficient H.264 codec for video compression. MP4/H.264
\begin{center}
\begin{Verbatim}
ffmpeg -i video.avi -vf scale="trunc(iw/2)*2:trunc(ih/2)*2"
- -c:v libx264 -profile:v high -pix_fmt yuv420p -g 30 -r 30 video.mp4
+ -c:v libx264 -profile:v high -pix_fmt yuv420p
+ -g 30 -r 30 video.mp4
\end{Verbatim}
\end{center}
From a sequence \verb+frame-0.png+, \verb+frame-1.png+, ... of bitmap files, an MP4 video is produced by
\begin{Verbatim}
ffmpeg -i frame-%d.png -vf scale="trunc(iw/2)*2:trunc(ih/2)*2"
- -c:v libx264 -profile:v high -pix_fmt yuv420p -g 30 -r 30 video.mp4
+ -c:v libx264 -profile:v high -pix_fmt yuv420p
+ -g 30 -r 30 video.mp4
\end{Verbatim}
Both examples insert a key frame (option `\verb+-g+') at every second since the frame rate is set to 30 fps. The video encoder requires even pixel numbers in both dimensions which is ensured by adding `\verb+-vf scale="..."+' to the option list.