Fixing video recording so it works in all browsers. Fixes #263 (#282)

Author: diemol

Dockerfile

@@ -932,7 +932,7 @@ ENV FIREFOX_VERSION="${FF_VER}" \
   FIREFOX="true" \
   MULTINODE="false" \
   FFMPEG_FRAME_RATE=10 \
-  FFMPEG_CODEC_ARGS="-crf 0 -preset ultrafast -qp 0 -pix_fmt yuv420p" \
+  FFMPEG_CODEC_ARGS="-vcodec libx264 -preset ultrafast -pix_fmt yuv420p" \
   FFMPEG_FINAL_CRF=0 \
   FFMPEG_DRAW_MOUSE=1 \
   VIDEO_TMP_FILE_EXTENSION="mkv" \

video-rec/bin/start-video-rec.sh

@@ -48,13 +48,13 @@ fi
 
 # avconv or ffmpeg
 ffmpeg -f x11grab \
-  -framerate ${FFMPEG_FRAME_RATE} \
-  -video_size ${FFMPEG_FRAME_SIZE} \
-  -i "${DISPLAY}.0+0,0" \
+  -s ${FFMPEG_FRAME_SIZE} \
+  -i "${DISPLAY}.0" \
   -draw_mouse ${FFMPEG_DRAW_MOUSE} \
   ${FFMPEG_CODEC_ARGS} \
-  -segment_format_options movflags=+faststart \
+  -r ${FFMPEG_FRAME_RATE} \
   -y -an "${tmp_video_path}" 2>&1 &
+
 VID_TOOL_PID=$!
 
 # Exit all child processes properly