[mythtv-users] Alternatives to lossless transcode

[Paul Gardiner]

On 14/11/2013 08:57, Paul Gardiner wrote:
> On 14/11/2013 05:57, mark wrote:
>> I've gone back and re-looked at a few segments to try and see if there
>> is audio out of sync (using --fifodir) - to be honest if there is it is
>> very very slight. The ProjectX cut file audio probably leads the video
>> by as much as the --fifodir audio lags the video, it is very very
>> slight. Probably less of a difference than what is introduced by the
>> transmission path and electronic processing circuits of the various
>> connected sound system devices.
>
> mythtranscode in --fifodir mode performs cutting carefully dropping or
> inserting frames to ensure the sync between the data in the two fifos
> is continuously maintained, so I believe that any lack of sync you are
> seeing has to be either a problem with the source or with
> mythtranscode's interpretation of the source. The outputting algorithms
> should in theory produce perfect results (to within a frame period).

Oh, another thought: what are you using to play back the transcoded
files and seeing them slightly out of sync?

P.