From 81d3fd522a26890f022a833dab3cadd1e1f0994d Mon Sep 17 00:00:00 2001
From: rfaelens <ruben.faelens@kuleuven.be>
Date: Wed, 11 Sep 2019 11:55:48 +0200
Subject: [PATCH] Use the specified ffmpeg path when detecting format

---
 R/renderers.R | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/R/renderers.R b/R/renderers.R
index ca4ee76..eef5b41 100644
--- a/R/renderers.R
+++ b/R/renderers.R
@@ -165,7 +165,7 @@ ffmpeg_renderer <- function(format = 'auto', ffmpeg = NULL, options = list(pix_f
   if (!has_ffmpeg(ffmpeg)) stop('The ffmpeg library is not available at the specified location', call. = FALSE)
   if (format == 'auto') {
     format <- if (.Platform$GUI == "RStudio" &&
-                  any(grepl('--enable-libvpx', system2('ffmpeg', '-version', stdout = TRUE)))) {
+                  any(grepl('--enable-libvpx', system2(ffmpeg, '-version', stdout = TRUE)))) {
       "webm"
     } else {
       "mp4"