[MEncoder-users] How to Change FPS on a Broken TS Stream?

[Nico Sabbi]

Bill Adams wrote:
>
> The reason that I want to encode the material to 1280x720 is that is 
> the native resolution of my projector. The scale=1280:720 is 
> unnecessary for the ABC material as it is already that resolution but 
> the OPB/PBS Secrets of the Dead stream is 1080i so I am down-sampling 
> it and deinterlacing it to the native resolution of my projector. This 
> is why I do not use the format=dvd option. I tried that option on the 
> bad stream and it did not help.

use :muxrate=36000 or higher (it's harmless and fixes the scr issues)

>
> > Do you know that you are getting good reception of ABC?
>
> My reception according to "dtvsignal 43" (ABC in my area Portland OR) 
> reports 94-98%.
>
> I have some NBC streams from Conan. They are 1920x1080 and transcode 
> fine with e.g.:
> mencoder -oac copy -ovc lavc -lavcopts 
> vcodec=mpeg2video:vqscale=4:dia=4:keyint=20 -vf pp=fp -of mpeg -o 
> Test.mpg Conan-OBrien-Tue.ts
>
>
> A question: How did you find these video packets full of zeros? Is 
> there an easy way I can filter them without breaking the video stream? 
> (Or RTFM link)? I have a strange feeling that if I get rid of those 
> packets/video frames (or fix getatsc to properly detect null packets) 
> the problem I see will go away.
>
> Thanks again everyone.
>
> b.
>

that sample if perfectly integer, but it has a framerate reported as 59.94.
Most likely it's 30000/1001 with soft telecining (using the progressive 
sequence flag).
I could encode it smoothly adding -fps 30000/1001 -ofps 30000/1001
(sometimes, due to rounding errors, you have to add :vstrict=-2 to 
-lavcopts)
 
 
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