Video Player - Revision history

Jluis: spam Undo revision 83997 by Osmal116 (Talk)

2011-05-23T09:14:37Z

spam Undo revision 83997 by Osmal116 (Talk)

2011-05-23T07:13:49Z

‎Transcoding

2010-10-02T22:30:42Z

‎Playing

2010-10-02T22:28:49Z

‎Encoding: htcdream: buffer underrun fixed in mplayer.conf

2010-08-14T15:29:23Z

2010-08-14T15:25:33Z

‎Playing

2010-08-14T15:23:42Z

‎Playing

2010-08-14T15:22:14Z

‎htcdream

2010-08-14T15:18:52Z

‎htcdream

2010-08-14T15:12:30Z

‎Neo1973

@@ Line 241: / Line 241: @@
 * video bitrates up to 1000kbit (or more) may work, 400kbit seems to be safe (mencoder -lavcopts vbitrate=400)
 * 3.6M pixels per second are possible, 640*240*24=3,686,400 (at least, when video is pre-rotated)
 =Frontend=

@@ Line 241: / Line 241: @@
 * video bitrates up to 1000kbit (or more) may work, 400kbit seems to be safe (mencoder -lavcopts vbitrate=400)
 * 3.6M pixels per second are possible, 640*240*24=3,686,400 (at least, when video is pre-rotated)
 =Frontend=

@@ Line 196: / Line 196: @@
 If you have the screen in portrait mode do:
   mplayer -vo dga bbb.mkv
-Using DGA should be a lot faster.<br/>
+Using DGA should be a lot faster. but no benchmarks were made, -vo x11 also works<br/>
-If I understand it well,it bypass xorg(with the cooperation from xorg) and have direct access to the framebuffer,so there is no xorg overhead <br/>
+If I understand it well,dga bypasses xorg(with the cooperation from xorg) and have direct access to the framebuffer,so there is no xorg overhead <br/>
 (it works only in portrait mode)<br/>
 else do:

@@ Line 184: / Line 184: @@
 The htcdream is capable of playing a video like big buck bunny,full screen,with only the CPU(we didn't investigate video/audio decoding offload)
 To encode the video use that command:
-  mencoder ../big_buck_bunny_1080p_h264.mov -oac mp3lame -lameopts cbr:br=64 -ovc lavc -lavcopts vcodec=mpeg1video:vbitrate=300 -vf scale=480:320,rotate=1,format=fmt=yv12 -srate 8000 -o bbb.mkv
+  mencoder ../big_buck_bunny_1080p_h264.mov -oac mp3lame -lameopts cbr:br=64 -ovc lavc -lavcopts vcodec=mpeg1video:vbitrate=300 -vf scale=480:320,rotate=1,format=fmt=yv12 -srate 44100 -o bbb.mkv
 The important part are:
 * low bit rates,mpeg1video etc... :
 That lower the CPU usage....until less than 80% usage

@@ Line 2: / Line 2: @@
 {{Prioritybox|
-Problems with playing videos? - The kernel is now (July 2010) configured to use kernel-mode switching (kms) for glamo. The glamo video driver has no direct control over glamo anymore and cannot use accelerated video playing until a new driver is written.
+Problems with playing videos on the freerunner? - The kernel is now (July 2010) configured to use kernel-mode switching (kms) for glamo. The glamo video driver has no direct control over glamo anymore and cannot use accelerated video playing until a new driver is written.
 }}

@@ Line 198: / Line 198: @@
 If you have the screen rotated do:
   mplayer -vo dga bbb.mkv
 else do:
   mplayer -vo x11 bbb.mkv

← Older revision		Revision as of 15:18, 14 August 2010
Line 181:		Line 181:

	= htcdream =		= htcdream =
		+	The htcdream is capable of playing a video like big buck bunny,full screen,with only the CPU(we didn't investigate video/audio decoding offload)
		+	To encode the video use that command:
		+	mencoder ../big_buck_bunny_1080p_h264.mov -oac mp3lame -lameopts cbr:br=64 -ovc lavc -lavcopts vcodec=mpeg1video:vbitrate=300 -vf scale=480:320,rotate=1,format=fmt=yv12 -srate 8000 -o bbb.mkv
		+	The important part are:
		+	* -srate 8000 :
		+	That prevent most of the buffer underruns and make the sound nearly prefect
		+	* low bit rates,mpeg1video etc... :
		+	That lower the CPU usage....until less than 80% usage

	=Transcoding=		=Transcoding=

@@ Line 179: / Line 179: @@
 You may also want to use:
 -autosync 30 -vf scale -zoom -xy 640 -vf rotate=1
 =Transcoding=