[mythtv-users] mplayer digital vs. mythtv digital

[Michael R. Hines]

These are great investigative suggestions. I just got back from a 
road-trip.

I'm going to try them now as soon as I get home and report back....

Thanks guys....

- Michael

Brian Wood wrote:
> On Saturday, July 24, 2010 08:59:35 am Michael R. Hines wrote:
>   
>> Hi,
>>
>> I'm trying to determine why mythtv's digital live TV capture has
>> different output than mplayer's live TV capture.
>>
>> So, I did the following:
>>
>> bash$ scan /usr/share/dvb/atsc/us-NTSC-center-frequencies-8VSB | tee
>> .mplayer/channels.conf # found several channels, great
>> bash$ mplayer dvb://NJN-1    # this is my local PBS station
>>
>> The output of mplayer is fantastic. Nice signal. Smooth audio/video
>> playback.
>>
>> But when I play it back in mythtv, it's choppy with lots of beeping
>> noises in the audio. The output on my external TV tuner is also very
>> good, but for some reason, myth just isn't playing it back as "nicely"
>> as mplayer.
>>
>> Any reason for this? How could I track this problem down?
>>     
>
> Remember that Myth is doing a lot more than just playing the file, thus comparing it to mplayer is not comparing apples and 
> apples. Among other things, Myth is checking the database for commercial flags, which means the overhead for MySQL et al.
>
> I'm not sure about the audio beeping, but this is the sort of thing that causes most people to recommend you have your OS 
> and database on a separate spindle from your video storage. Myth will make more demands on your system than just playing 
> the file. Are you running close to the edge of system performance?
>
> Some system details might help track things down.
>
> beww (former Secaucus resident, who has climbed NJN's Lawrenceville tower many times)
>
>
>
>   

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