updated a bit

ffmpeg_x11grab_screencast.txt

@@ -1,9 +1,15 @@
-#-------- FFMPEG Screencasting
-# compile ffmpeg:       http://ubuntuforums.org/showthread.php?t=786095
-# proper screencast:    http://ubuntuforums.org/showthread.php?t=1392026
+#-------- FFMPEG X11GRAB Screencasting
+#------------------------------------------------------
+# compile ffmpeg:	http://ubuntuforums.org/showthread.php?t=786095
+# proper screencast: 	http://ubuntuforums.org/showthread.php?t=1392026
+# http://nowardev.wordpress.com/2011/05/23/how-to-screencast/
+# press q to quit
 
-# Original Code:
-ffmpeg -f alsa -ac 2 -i hw:0,0 -f x11grab -r 30 -s $(xwininfo -root | grep 'geometry' | awk '{print $2;}') -i :0.0 -acodec pcm_s16le -vcodec libx264 -preset ultrafast -crf 0 -threads 0 -y screencast_out.mkv
+# orginal one line code for fullscreen
+ffmpeg -f alsa -ac 2 -i hw:0,0 -f x11grab -r 30 -s $(xwininfo -root | grep 'geometry' | awk '{print $2;}') -i :0.0 -acodec pcm_s16le -vcodec libx264 -preset ultrafast -crf 0 -threads 0 -y screencast_out.avi
+
+# record single window, use mouse to click on the window to start recording
+ffmpeg -f alsa -ac 2 -i hw:0,0 -f x11grab -r 30 -s $(xwininfo -frame | grep -oEe 'geometry [0-9]+x[0-9]+' | grep -oEe '[0-9]+x[0-9]+') -i :0.0+$(xwininfo -frame | grep -oEe 'Corners:\s+\+[0-9]+\+[0-9]+' | grep -oEe '[0-9]+\+[0-9]+' | sed -e 's/\+/,/' ) -acodec pcm_s16le -vcodec libx264 -preset ultrafast -crf 0 -threads 0 -y screencast_out.avi
 
 # -y = will overwrite output file
 
@@ -15,37 +21,74 @@ ffmpeg -f alsa -ac 2 -i hw:0,0 -f x11grab -r 30 -s $(xwininfo -root | grep 'geom
 #Note 2: If you like to scale down your videos at the same time when recording
 # add in for example
 # -vf "scale=1280:720"
+# The reason this is useful is becuase I have a 16:10 resolution but youtube only supports 16:9
+# So I can avoid the black bars on left/right side of the videos with this option
+
+
+
 
 
 
-#============================================
-# This is What i Use
+#==============================================
+# This is what I use, added to bashrc/zshrc
 
-# Using FFmpeg, fullscreen capture scaled down to 16:9(1280:720) for youtube upload
-ffx-fullscreen-hw() { ffmpeg -f alsa -ac 2 -i hw:0,0 -f x11grab -r 30 \
-        -s $(xwininfo -root | grep 'geometry' | awk '{print $2;}') -i :0.0 \
-        -acodec pcm_s16le -vcodec libx264 -preset ultrafast -crf 0 -threads 0 \
-        -vf "scale=1280:720" \
-        -y ~/Public/screencast/aa_screencast_baking.mkv ;}
+FFX_MONO="1"		# mono
+FFX_DUAL="2"		# dual channel
+FFX_HW="hw:1,0" 	# alsa; run 'cat /proc/asound/pcm' to change to the correct numbers
+FFX_PULSE="pulse" 	# pulseaudio; might have to install pavucontrol to change volume
+FFX_FPS="30"		# frame per seconds
+FFX_WIN_FULL=$(xwininfo -root | grep 'geometry' |awk '{print $2;}')	# record fullscreen
+FFX_AUDIO="pcm_s16le"	# audio codec
+FFX_VIDEO="libx264"	# video codec
+FFX_PRESET="ultrafast"	# preset error? run 'x264 -h' replace with fast,superfast, slow ..etc
+FFX_CRF="0"
+FFX_THREADS="0"
+FFX_SCALE="scale=1280:720"	# scale resolution, no black bars on sides of video on youtube
+FFX_OUTPUT=~/Public/screencast/aa_screencast_baking.avi
+# Note: -vf is optional delete if you want, -y is to overwrite existing file
 
-ffx-fullscreen-pulse() { ffmpeg -f alsa -ac 2 -i pulse -f x11grab -r 30 \
-        -s $(xwininfo -root | grep 'geometry' | awk '{print $2;}') -i :0.0 \
-        -acodec pcm_s16le -vcodec libx264 -preset ultrafast -crf 0 -threads 0 \
-        -vf "scale=1280:720" \
-        -y ~/Public/screencast/aa_screencast_baking.mkv ;}
+# capture fullscreen using alsa or pulseaudio
+ffx-full-hw() { ffmpeg -f alsa -ac $FFX_MONO \
+	-i $FFX_HW -f x11grab -r $FFX_FPS -s $FFX_WIN_FULL -i :0.0 \
+	-acodec $FFX_AUDIO -vcodec $FFX_VIDEO \
+       	-preset $FFX_PRESET -crf $FFX_CRF -threads $FFX_THREADS \
+	-vf $FFX_SCALE \
+	-y $FFX_OUTPUT
+}
+ffx-full-pa() { ffmpeg -f alsa -ac $FFX_MONO \
+	-i $FFX_PULSE -f x11grab -r $FFX_FPS -s $FFX_WIN_FULL -i :0.0 \
+	-acodec $FFX_AUDIO -vcodec $FFX_VIDEO \
+       	-preset $FFX_PRESET -crf $FFX_CRF -threads $FFX_THREADS \
+	-vf $FFX_SCALE \
+	-y $FFX_OUTPUT
+}
 
+# capture single window, use mouse cursor to select window you want to record
+ffx-winselect-hw() { 
+	FFX_INFO=$(xwininfo -frame)
 
-# Using FFmpeg, select specific single window with mouse to capture
-ffx-windowspecific-hw() { ffmpeg -f alsa -ac 2 -i hw:0,0 -f x11grab -r 30 \
-        -s $(xwininfo -frame | grep -oEe 'geometry [0-9]+x[0-9]+' | grep -oEe '[0-9]+x[0-9]+') \
-        -i :0.0+$(xwininfo -frame | grep -oEe 'Corners:\s+\+[0-9]+\+[0-9]+' \
-        | grep -oEe '[0-9]+\+[0-9]+' | sed -e 's/\+/,/' ) \
-        -acodec pcm_s16le -vcodec libx264 -preset ultrafast -crf 0 -threads 0 \
-        -y ~/Public/screencast/aa_screencast_baking.mkv ;}
+	ffmpeg -f alsa -ac $FFX_MONO \
+	-i $FFX_HW -f x11grab -r $FFX_FPS \
+	-s $(echo $FFX_INFO | grep -oEe 'geometry [0-9]+x[0-9]+'\
+	| grep -oEe '[0-9]+x[0-9]+') \
+	-i :0.0+$(echo $FFX_INFO | grep -oEe 'Corners:\s+\+[0-9]+\+[0-9]+' \
+	| grep -oEe '[0-9]+\+[0-9]+' | sed -e 's/\+/,/' ) \
+	-acodec $FFX_AUDIO -vcodec $FFX_VIDEO \
+       	-preset $FFX_PRESET -crf $FFX_CRF -threads $FFX_THREADS \
+	-vf $FFX_SCALE \
+	-y $FFX_OUTPUT
+}
+ffx-winselect-pa() { 
+	FFX_INFO=$(xwininfo -frame)
 
-ffx-windowspecific-pulse() { ffmpeg -f alsa -ac 2 -i pulse -f x11grab -r 30 \
-        -s $(xwininfo -frame | grep -oEe 'geometry [0-9]+x[0-9]+' | grep -oEe '[0-9]+x[0-9]+') \
-        -i :0.0+$(xwininfo -frame | grep -oEe 'Corners:\s+\+[0-9]+\+[0-9]+' \
-        | grep -oEe '[0-9]+\+[0-9]+' | sed -e 's/\+/,/' ) \
-        -acodec pcm_s16le -vcodec libx264 -preset ultrafast -crf 0 -threads 0 \
-        -y ~/Public/screencast/aa_screencast_baking.mkv ;}
+	ffmpeg -f alsa -ac $FFX_MONO \
+	-i $FFX_PULSE -f x11grab -r $FFX_FPS \
+	-s $(echo $FFX_INFO | grep -oEe 'geometry [0-9]+x[0-9]+'\
+	| grep -oEe '[0-9]+x[0-9]+') \
+	-i :0.0+$(echo $FFX_INFO | grep -oEe 'Corners:\s+\+[0-9]+\+[0-9]+' \
+	| grep -oEe '[0-9]+\+[0-9]+' | sed -e 's/\+/,/' ) \
+	-acodec $FFX_AUDIO -vcodec $FFX_VIDEO \
+       	-preset $FFX_PRESET -crf $FFX_CRF -threads $FFX_THREADS \
+	-vf $FFX_SCALE \
+	-y $FFX_OUTPUT
+}