[mythtv-users] OT: HDTV artifacts/waviness

[John Sturgeon]

Doug Larrick wrote:

> John Sturgeon wrote:
>
>> Basically, I record the HDTV content to a .nuv file, use ProjectX to 
>> demux the video from the audio, and use transcode to convert the 
>> whole thing to xvid4.  I'm beginning to think that it might be a 3:2 
>> pulldown issue introduced by scaling 480i up to 1080i
>
>
> I'd suggest you deinterlace before transcoding, via whatever means you 
> can.  Since transcoding doesn't have to be real-time, you can use a 
> nice high-quality deinterlacer.  OTOH, since you're scaling down by 
> quite a bit, even just separating the fields and doubling the 
> framerate (or discarding the odd fields) would alleviate this problem.
>
> -Doug
>
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Thanks Doug,  I couldn't de-interlace prior to transcoding because the 
tool I use (ProjectX) doesn't provide that capability, so instead I 
tried to de-interlace during transcode, and it works great.  Thanks for 
the suggestion.

For those of you who are doing HDTV recording, and need to reliably 
transcode the files to a more manageable size, I will be doing a 
write-up when I get a chance.

Regards,

--
John Sturgeon <><