[mythtv] [PATCH] Video delay filter

[Geoffrey Kruse]

Could also be useful for sending audio over the network to remote  
speakers

Geoff

On May 7, 2005, at 6:17 AM, Endaf Jones wrote:

> I would also like something like this as I have a video scan  
> converted that adds delay too (perahps 1/4 second).
>
> # Endaf
>
> Kevin Kuphal wrote:
>
>
>> Ed Wildgoose wrote:
>>
>>
>>> Bryce Poole wrote:
>>>
>>>
>>>> When I first got my Dish Network satellite, I immediately  
>>>> noticed that
>>>> the video was leading the audio.  So when myth was up and running I
>>>> wrote this filter to fix the problem and slow down the video.
>>>>
>>>> The basic idea is that the filter gets passed a size from the TV
>>>> Playback screen along the lines of "delay=10" which translates  
>>>> into a
>>>> 10 frame delay.  The filter then creates a dynamic ring buffer  
>>>> to hold
>>>> 10 frames.  Each time the filter is called the oldest frame is
>>>> returned.
>>>>
>>>>
>>>
>>> Hi, I actually need something similar to this myself because I  
>>> have some serious DSP processing enabled which causes delays to  
>>> the audio signal
>>>
>>> However, I was going to implement this simply in the audio  
>>> routines by changing the audio timestamp which is returned  
>>> (forget the call name).  Just change this to be forwards or  
>>> backwards by the required amount and we should achieve the  
>>> desired result with very little code.
>>>
>>> I would recommend that we try this before putting in the filters  
>>> method?
>>>
>>>
>> I was thinking along the same lines (on my todo list) with an OSD  
>> option for increasing/decreasing the audio delay as every blue  
>> moon I get a recording that lags in audio for a second or so  
>> throughout the duration of the show.
>>
>> Kevin
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>>
>
>
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