Prevent alsa buffer underrun x11grab ffmpeg, and some shell script stuff you might like ...
date='date +%Y-%m-%d-%H:%M:%S'
INC_COUNT_FILE="/home/shorty/capture/videocount"
OLD_INC_COUNTER=$(cat "$INC_COUNT_FILE")
NEW_INC_COUNTER=$(expr "$OLD_INC_COUNTER" + 1)
echo $NEW_INC_COUNTER > /home/shorty/capture/videocount
CUR=$(cat "$INC_COUNT_FILE")
textmsg="$( kdialog --title "Input dialog" --inputbox "Message" "Neverwinter - Ranger - Gameplay - $CUR")"
kdialog --msgbox "Press OK to start grabbing ;) .\n File=hd1080-capture_$CUR.mkv \n\n Further converting to 720p"
#-thread_queue_size 1024 # QHD+ (32001800)
ffmpeg -f alsa -thread_queue_size 1024 -ac 1 -i default -async 1 -f x11grab -s hd1080 -strict 2 -r 25 -i :0.0 -ar 44100 -ab 164k -acodec libvo_aacenc -vcodec libx264 -b:v 65k -bufsize 64k -pix_fmt yuv420p -preset ultrafast -crf 0 -maxrate 65k -threads 4 -vsync 1 -qp 0 -vf "movie=/home/shorty/LAYOUT/pfadlogoborder.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:main_h-overlay_h-10 [out]" -y /home/shorty/capture/hd1080-capture_$CUR.mkv
#-filter_complex "unsharp=luma_msize_x=7:luma_msize_y=7:luma_amount=2.5,scale=1280:-1,format=gray,format=yuv422p"
# -preset ultrafast -nocache
ffmpeg -i /home/shorty/capture/hd1080-capture_$CUR.mkv -s hd720 -aspect 16:9 -vcodec libx264 -pix_fmt yuv420p -b:v 6500k -acodec libmp3lame -ar 44100 -ab 128k -af volume=1.953125 -vf "unsharp=luma_msize_x=7:luma_msize_y=7:luma_amount=2.5,scale=1280:-1,drawtext=fontcolor=purple: enable='between(t,01,15)': fontsize=64:\
fontfile=/home/shorty/TTF/Neverwinter.ttf: \
box=1:boxcolor=black@0.0:x=50:y=20: \
text=$textmsg" \
/home/shorty/capture/hd720-final_$CUR.mkv
DUR=$(ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 /home/shorty/capture/hd720-final_$CUR.mkv)
kdialog --msgbox "Duration: $DUR";
mplayer -fs -loop 0 /home/shorty/capture/hd720-final_$CUR.mkv
