[plumi-discuss] memcoder video quality

[roland fasching]

hi andy!

sorry for late reply!
thanx a lot for the bitrate hint. increased it to 1500.
takes lots of space, but the quality is great now!

example:
http://www.screensessions.com/screensessions/Members/twofaces/videos/walking.mov/view

cheers,
roland

On 09.05.2009, at 05:23, andy nicholson wrote:

> Hi Roland
>
> Have a look at the latest version of indytube released for plumi 0.2.x
> http://plumi.org/browser/indytube/tags/plumi-0.2.3-rc3
> in particular the latest example conf
> http://plumi.org/browser/indytube/tags/plumi-0.2.3-rc3/indytube.conf
>
> the mencoder options in particular, are:
>
> # for newer versions of MEncoder, we dont need the "lavfopts" line
> above, plus we add in a higher bitrate, and a sync option
> MENCODER_OPTIONS=-really-quiet -of lavf -oac mp3lame -lameopts  
> abr:br=64
> -ovc lavc -lavcopts
> vcodec=flv:keyint=25:vbitrate=260:mbd=2:mv0:trell:v4mv:cbp:last_pred=3
> -vf harddup,expand=:::::4/3,scale=320:240  -srate 22050 -ofps 25 -mc
> 0/10
>
> ---
>
> Notice that in the example indytube conf, the vbitrate param to the
> vcodec param (sent to mencoder) got lifted to 260, from 150. You can
> make it what you like to adjust the size/quality trade-off, and also  
> for
> instance, you could change the "320:240" scaling if you like - you  
> would
> just need to make the same weight/height corresponding change in the
> flowplayer template.
>
> Also, as mentioned in the indytube.conf at the above link, at some
> version MEncoder stopped supporting the
> "i_certify_that_my_video_stream_does_not_use_b_frames" flag and wont
> transcode files if its used. Upgrading MEncoder to the latest version
> should work easily though.
>
>
> cheers
> andy
>
>
> On Fri, 2009-05-08 at 13:38 +0200, roland fasching wrote:
>> hi!
>>
>> i am running the www.screensessions.com website and the project runs
>> great for more than one year.
>> the only complaints we receive targets to video quality.
>> is there a way to improve it?
>>
>> thank you!
>>
>> roland
>> ---
>>
>> my indytube.conf:
>>
>> [encoder]
>> BE_HOW_NICE=18
>> CONVERT_THESE
>> =['.avi','.qt','.mov','.mpeg','.mp4','.mpg','.asf','.wmv','.3gp']
>> DO_ENCODING=True
>> NUMBER_OF_PARALLEL_ENCODERS=20
>> ENCODER_LOCKFILE_BASE=/var/lib/zope29/screensessions/Products/ 
>> indytube/
>> plumidemo-encoder.lock
>> POLLTIME=60
>>
>> [mencoder]
>> MENCODER_LOCATION=/usr/bin/mencoder
>> MENCODER_OPTIONS=-really-quiet -of lavf -lavfopts
>> i_certify_that_my_video_stream_does_not_use_b_frames -oac mp3lame -
>> lameopts abr:br=56 -ovc lavc -lavcopts
>> vcodec 
>> =flv:keyint=50:vbitrate=150:mbd=2:mv0:trell:v4mv:cbp:last_pred=3
>> -vf scale=425:344 -srate 22050
>>
>> [ffmpeg2theora]
>> CORTADO_LOCATION=http://demo.plumi.org/flowplayer/cortado-ovt-debug-0.2.2.jar
>> FFMPEG2THEORA_COMMAND=ffmpeg2theora
>>
>> [flvtool2]
>> FLVTOOL_LOCATION=/usr/bin/flvtool2
>>
>> [paths]
>> VIDEO_FILE_DIRECTORY=/var/lib/zope29/screensessions/var/files/Members
>> FLV_FILE_DIRECTORY=/var/lib/zope29/screensessions/static/flv-files
>> INCLUDE_FILE_DIRECTORY=/var/lib/zope29/screensessions/var/files/ 
>> Members
>> INCLUDE_FILE_SUFFIX=.flv.inc
>> INCLUDE_TEMPLATE=/var/lib/zope29/screensessions/Products/indytube/
>> screensessions.template
>>
>> [urls]
>> FLOWPLAYER_LOCATION=http://www.screensessions.com/static/FlowPlayerWhite.swf
>> VIDEO_SERVER_URL=http://flv.screensessions.com
>> SPLASH_IMAGE_BASE=http://www.screensessions.com/static
>> SPLASH_IMAGE_FILE=play-button-328x240.jpg
>>
>> [logging]
>> LOG_FILE=/var/lib/zope29/screensessions/Products/indytube/plumi-
>> wetube.log
>> LOG_LEVEL=logging.INFO
>>
>>
>> _______________________________________________
>> Discuss mailing list
>> Discuss at lists.plumi.org
>> http://lists.plumi.org/listinfo/discuss
> -- 
>
> _______________________________________________
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> Discuss at lists.plumi.org
> http://lists.plumi.org/listinfo/discuss

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