[mythtv-users] Alternatives to lossless transcode

[Mark Perkins]

> Date: Mon, 25 Nov 2013 09:53:51 +0000
> From: lists at glidos.net
> To: mythtv-users at mythtv.org
> Subject: Re: [mythtv-users] Alternatives to lossless transcode
...
> The cleancut option doesn't alter the cuts. The same sections of audio
> and video will be missing from the fifo streams as without the option.
> It changes only the internal mechanism by which mythtranscode achieves
> the cuts. Without the cleancut option, mythtranscode gets mythplayer
> to perform a seek from the start of the cut to the end. That can lead
> to a moment of audio and video being slightly out of sync. Mythtranscode
> quickly corrects the sync, but there can be a noticeable hiccup. With
> the cleancut option, mythtranscode performs the cutting by seeking to a
> point a little before the end of the cut, and then dropping audio and
> video until the true end of the cut is reached.
> 
> Paul.
> _______________________________________________

Thanks Paul. Hope you don't mind me asking a few more questions - but I'm not hugely familiar with the workings of ffmpeg. In Handbrake I had presets set to default for deinterlacing and detelecine because as my recordings are OTA TV I don't really know if any particular recording will be interlaced / telecine or not or and apparently the defaults were pretty harmless in the cases that they weren't needed and did a good job in the cases where they were needed.

Do I need to be looking into deinterlacing / detelecine for ffmpeg or does this fifo method just take all of this into account and "sort it out"?

I think Handbrake and ffmpeg both use x264 for the actual processing but I couldn't find anywhere that would translate Handbrake settings into equivalent ffmpeg settings.
 		 	   		  
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