[Mplayer-cvslog] CVS: main/DOCS/tech libavc-rate-control.txt,1.5,1.6
Atmosfear
atmos4 at mplayerhq.hu
Fri Jun 7 03:19:07 CEST 2002
Update of /cvsroot/mplayer/main/DOCS/tech
In directory mail:/var/tmp.root/cvs-serv9937/DOCS/tech
Modified Files:
libavc-rate-control.txt
Log Message:
Reviewed for pre5.
Index: libavc-rate-control.txt
===================================================================
RCS file: /cvsroot/mplayer/main/DOCS/tech/libavc-rate-control.txt,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -r1.5 -r1.6
--- libavc-rate-control.txt 2 Jun 2002 18:38:01 -0000 1.5
+++ libavc-rate-control.txt 7 Jun 2002 01:19:04 -0000 1.6
@@ -116,7 +116,7 @@
vdpart data partitioning
adds 2 byte per video packet
improves error-resistance when transfering over unreliable channels (eg.
- streaming over the internet) -- CHECKME (atmos)
+ streaming over the internet)
vpsize (0-10000) video packet size
0 disabled (default)
@@ -128,7 +128,7 @@
ver error resilience
-1 needed for some very broken, encoders which completly ignore the
- standards -- FIXME: which are these? (atmos)
+ standards (one M4S2 asf sample know to need this)
0 (default)
1 more aggressive error detection, lavc might think that some correct
streams contain errors
@@ -146,7 +146,9 @@
A: Try to increase vqmin=2 or 1 (be carefull with 1, it could cause
strange things to happen).
Q: Can I use -pass 1 & -pass 2 with vmax_b_frames>0 ?
- A: Read DOCS/tech/patches.txt and send a patch ;) (XXX still not fixed?)
+ A: -pass x uses the divx4 twopass-encoding codem which is incompatible
+ with the libavcodec encode.
+ If you want to fix it read DOCS/tech/patches.txt and send a patch.
Q: What provides better error recovery while keeping the filesize low?
Should I increase data partitioning or the number of video packets?
A: Data partitioning is better in this case.
@@ -161,3 +163,8 @@
Examples:
mencoder foobar.avi -lavcopts vcodec=mpeg4:vhq:keyint=300:vqscale=2 -o new-foobar.avi
mplayer foobar.avi -lavdopts vbug=1
+
+--
+Written 2002 by Michael Niedermayer and reviewed by Felix Buenemann.
+Check the MPlayer documentation for contact-addresses.
+
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