[mythtv-users] Alternatives to lossless transcode
mark
perkins1724 at hotmail.com
Wed Nov 13 09:43:11 UTC 2013
On 12/11/13 20:42, Paul Gardiner wrote:
> Do you mean running my script or just running mythtranscode?
> Mythtranscode --fifodir run alone will stall eventually because the
> fifos will fill up. It will also stall if something reads from them
> unevenly. But, assuming you are running the script, you could easily
> be correct that whatever upsets --mpeg2 is also upsetting --fifodir.
>
> Cheers,
> Paul.
> _______________________________________________
Sorry my mistake. I assumed that if I ran just mythtranscode --fifodir
it would just output the two streams in their entirety to the nominated
files. Trying your script now, for some reason my ffmpeg did not like
the '-profile high' switch but have taken that out and it works.
The audio was much more in sync than previously, but it still just seems
a little off. I ran mythDVBcut over the same file (which uses ProjectX
and no mythtranscode) and the file generated by your script had a delay
of 80ms (from mediainfo) versus 112ms from the ProjectX version. I'm not
sure that -hand on heart- I could pick a difference in sync of 32ms but
it did seem just that little bit out whereas the ProjectX file just
seemed spot on.
Again the question probably is whether this is due to errors in the
original recording or something else.
I'm updating my ffmpeg now and will re-try your script and see if that
changes anything.
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