[MEncoder-users] h264 (and help with encoding) or divx

[Alex Samad]

On Sat, Mar 15, 2008 at 11:39:24AM +1100, Alex Samad wrote:
> On Sat, Mar 08, 2008 at 11:34:18PM +1100, Alex Samad wrote:
> > On Sat, Mar 08, 2008 at 05:39:30AM -0600, Brian Penick wrote:
> [snip]
> 
> I have cut most of the thread, this is more of a round up to that
> 
> my aim was to look for some good options for encoding my home video
> (handy cam and a cannon video) using x264 and being able to play on an
> xbox (low processing power)
> 
> i used this list and also
> http://sourceforge.net/projects/h264enc
> http://www.mplayerhq.hu/DOCS/HTML/en/menc-feat-x264.html
> and the man pages for mencoder (from debian)
> 
> I have decided to go with 2 pass instead of 3/n pass, the man pages say
> there is no real benefit for normal source files.
> 
> this are the common options I am using 
> subq=6:frameref=15:partitions=all:me=umh:bframes=3:nob_pyramid:weight_b:threads=auto:qcomp=0.75:mixed_refs:nof
> ast_pskip:trellis=2:8x8dct:nocabac:nodct_decimate:nopsnr:brd
forgot to add

pass=1:turbo=2 on pass 1
pass=2 on pass 2
> 
> specifically I have turned off cabac and pyramids to help with decoding
> on the xbox (still in the process of testing, also looking at reducing
> the size of the encoding video and letting the xbox scale up ?)
> 
> I am trialling 700 1100 1400 and 2000 bitrate.
> 
> in my script I can easy change between mp3 and aac.  The mp3 seems to
> produce smaller files, but qt has problems playing the resultant files
> (but I have read that aac files take more cpu power - again the xbox.) I
> haven't done anything special with the audio encoding.
> 
> at the same time I have also done divx encoding using
> 
> mbd=2:mv0:trell:v4mv:cbp:last_pred=3:predia=2:dia=2:vmax_b_frames=2:vb_strategy=1:precmp=2:cmp=2:subcmp=2:prem
> e=2:qns=2:autoaspect
> 
> from http://www.mplayerhq.hu/DOCS/HTML/en/menc-feat-enc-libavcodec.html
> 
> the resultant files for divx are smaller (ignore <1500 for the tst-w*
> divx, it was unable to produce any video)
> 
> 
> but the quality at the lower bitrates is not there.
>   21M 2008-03-05 11:42 MOV023.mpg
>  2.9M 2008-03-05 11:42 tst-mov023-1100-divx-aac.avi
>  3.1M 2008-03-05 11:42 tst-mov023-1100-divx-mp3.avi
>  2.8M 2008-03-05 11:42 tst-mov023-1100-x264-aac.mp4
>  3.1M 2008-03-05 11:42 tst-mov023-1100-x264-mp3.mp4
>  3.7M 2008-03-05 11:42 tst-mov023-1500-divx-aac.avi
>  4.0M 2008-03-05 11:42 tst-mov023-1500-divx-mp3.avi
>  3.7M 2008-03-05 11:42 tst-mov023-1500-x264-aac.mp4
>  3.9M 2008-03-05 11:42 tst-mov023-1500-x264-mp3.mp4
>  4.8M 2008-03-05 11:42 tst-mov023-2000-divx-aac.avi
>  1.9M 2008-03-05 11:42 tst-mov023-700-divx-aac.avi
>  2.2M 2008-03-05 11:42 tst-mov023-700-divx-mp3.avi
>  1.9M 2008-03-05 11:42 tst-mov023-700-x264-aac.mp4
>  2.2M 2008-03-05 11:42 tst-mov023-700-x264-mp3.mp4
>   36k 2008-03-15 00:38 tst-wedding-1100-divx-aac.avi
>   59k 2008-03-15 00:38 tst-wedding-1100-divx-mp3.avi
>  296k 2008-03-15 00:38 tst-wedding-1100-x264-aac.mp4
>  325k 2008-03-15 00:38 tst-wedding-1100-x264-mp3.mp4
>  350k 2008-03-15 00:38 tst-wedding-1500-divx-aac.avi
>  380k 2008-03-15 00:38 tst-wedding-1500-divx-mp3.avi
>  392k 2008-03-15 00:38 tst-wedding-1500-x264-aac.mp4
>  424k 2008-03-15 00:38 tst-wedding-1500-x264-mp3.mp4
>  488k 2008-03-15 00:38 tst-wedding-2000-divx-aac.avi
>  513k 2008-03-15 00:38 tst-wedding-2000-x264-aac.mp4
>   36k 2008-03-15 00:38 tst-wedding-700-divx-aac.avi
>   59k 2008-03-15 00:38 tst-wedding-700-divx-mp3.avi
>  198k 2008-03-15 00:38 tst-wedding-700-x264-aac.mp4
>  227k 2008-03-15 00:38 tst-wedding-700-x264-mp3.mp4
>  7.3M 2008-03-15 00:38 wedding-2008.03.02_05-47-27.avi
> 
> 
> i also get these errors on play back with mplayer  for the divx + aac
> FAAD: error: Unable to find ADTS syncword, trying to resync!3% 0 0
> FAAD: Failed to decode frame: Unable to find ADTS syncword
> 
> 
> I am not too fussed on the encoding time, which might explain some of my
> x264 options.  These are based on the stuff I have read, I haven't made
> empirical test for each option (hoping for some feedback)
> 
> I am using -vf spp,hqdn3d=2:1:2,harddup for all the above encodings
> 
> 
> thanks
> alex
> 
> ps my xbox runs the media area in the house, easy for every one to use!
> 
> 
> -- 
> "There's an old saying in Tennessee--I know it's in Texas, probably in Tennessee--that says, fool me once, shame on--shame on you. Fool me--you can't get fooled again."
> 
> 	- George W. Bush
> 09/17/2002
> Nashville, TN
> Speaking at the East Literature Magnet School



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-- 
"But the God I know is not one that -- the God I know is one that promotes peace and freedom. But I get great sustenance from my personal relationship. That doesn't make me think I'm a better person than you are, by the way."

	- George W. Bush
06/24/2004
Washington, DC
in an Interview on Radio and Television Ireland
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