Wrap docker in subshell so output can be captured on failre

Signed-off-by: James Ketrenos <jketreno@media.ketrenos.com>

video-convert

@@ -110,16 +110,14 @@ function convert {
   OUT=$(realpath "${OUT}")
   DIN=$(dirname "${IN}")
   DOUT=$(dirname "${OUT}")
-  if true; then
-    quiet="
-      -v quiet
-      -loglevel fatal
-    "
-  else
-    quiet=""
-  fi
+  quiet="
+    -v quiet
+    -loglevel fatal
+  "
+#  quiet=""
 
-  docker run \
+  {
+    docker run \
     --device=/dev/dri \
     --user=$(id -u) \
     --rm \
@@ -137,10 +135,12 @@ function convert {
     ${output_flags} \
       -movflags +faststart \
     "${OUT}" \
-      -y || fail "ffmpeg failed" 2>&1 |
-    while read line; do
+      -y || echo "ffmpeg failed"
+  } | while read line; do
       if [[ "${line}" == "ffmpeg failed" ]]; then
+        fail "FFMPEG failed"
         false
+        exit -1
         break
       fi
       POS=$(echo $line | sed -n 's/^frame=*\(.*\)/\1/p')