On 11:25 Sun 06 Jul, Duncan Webb wrote:
>Steven Blatchford wrote:
>> On 22:28 Sun 22 Jun, Omry Yadan wrote:
>>> Hi all,
>>> I recently started to watch full HD H264 videos (1920x1080).
>>> It's really heavy on the CPU, and I had to get coreavc for linux, which 
>>> is an adaptation of coreavc - a windows multi-core decoder for h264 to 
>>> linux.
>>> my problem is that even with that codec, my system is right on the edge 
>>> of properly decoding the video at real time.
>>> I found that if I start mplayer from Freevo (1.8) it doesn't play fast 
>>> enough, but when if I kill freevo and start it from the command line it 
>>> plays fast enough (only if I kill freevo!).
>>>
>>> I noticed freevo uses a small amount of CPU even when mplayer is 
>>> running, which is probably what causing my problem.
>>>
>>> any plans to make freevo consume less cpu when playing a video? 
>>> (suspending threads, stoping timers etc).
>>>
>>>     Omry.
>> 
>> Hi Om,
>> Did setting 'POLL_TIME = 0.05' in your local_conf.py fix this for you?
>> I too am using the coreavc video codec on a 1920x1080 display.  My
>> processor is 2.0Ghz duo core.  My video chipset is the Intel Corporation
>> Mobile 945GM/GMS -- in case you were wondering about my setup.
>> 
>> When I play a mkv file with freevo I notice slight video tearing and
>> slight blocky video.  Using 'ps ax |grep mplayer' to find the command
>> freevo is using, I play this from the cli and the video is fine.
>> 
>> I added the 'POLL_TIME = 0.05' to my local_conf.py, restarted freevo and
>> saw no noticable change.  I also use ffmpeg codec on a 720p x264 with
>> the same result.
>
>You can use DEBUG_CHILDAPP=1 in local_conf.py and this does two things, 
>first, you should see the command line that freevo executes in the 
>main-X.log and, secondly, it captures the output of mplayer, etc to a 
>separate log.
>
>When freevo runs a command, as root, it sets the nice level to, by 
>default, -10 and this will give mplayer a higher priority. This only 
>works as root as normal users cannot set a nice level below 0.
>
>May be you can play with this a bit more and see what top is saying 
>about the CPU.
>
>My test environment is a P3 700MHz machine with a Matrox G400DH and 
>framebuffer and it runs and plays videos just fine. I cannot see how on 
>dual core machine you should be having problems with freevo playing videos.
>
>I wonder if X is causing part of the problem?
>
>Duncan

Setting 'MPLAYER_NICE        = 0' solved my issue.  Thanks Duncan for
the hint.

-steve





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