Help with transcoding h264 encoded TS on raspberry pi

[Stefan Simon]

Guys,

I'd like to sincerely thank you for your great support, I was able to make
the 1.2 work, no more issues with ghosting (unless I use videoscale),
pipelines work as expected. I was wondering if openmax videoscale and
deinterlace are planned, because this would help a lot. One more question
if I may. How does one handle multiple audio tracks correctly in my use
case?


On Fri, Dec 13, 2013 at 9:04 PM, Sebastian Dröge
<sebastian at centricular.com>wrote:

> On Fr, 2013-12-13 at 20:40 +0100, Markus Fritsche wrote:
> > On 12/13/2013 08:12 PM, Sebastian Dröge wrote:
> > > Which caps are configured on videocrop here, and is videoconvert
> > > converting between different video formats? Do you also get these
> > > red/green problems if you don't encode after videocrop but display the
> > > video directly? Does the pattern change somehow if you use different
> > > cropping values, e.g. does it disappear if you only crop at the top or
> > > bottom?
> >
> > videoconvert was just a safety measure - the pipeline also works fine
> > without those.
> >
> > More samples:
> > http://reauktion.de/cropbottomout.mkv 8 px cropped at the bottom
> > http://reauktion.de/croptopout.mkv 8 px cropped at the top
> > http://reauktion.de/cropb16out.mkv 16 px cropped, 8 each side
> >
> > The one with 16 px cropped looks fine. Hmm, was there a h264 rule that
> > width and height have to be dividable by 16? Or maybe that's a hardware
> > limitation (I do keep mentioning that my davinci based board doesn't
> > like dimensions not being dividable by 32 px ;-))
>
> Well, it's not a strict requirement and many codecs can handle other
> widths/heights too :) But that might indeed be related here.
>
> So, does it work if you don't encode the video and just display it?
> I.e., is the problem on the decoding or the encoding side of things?
>
> Maybe there's a configuration problem in gst-omx with the encoder or
> decoder, maybe something with the stride but for that the visible
> problems look wrong.
>
> --
> Sebastian Dröge, Centricular Ltd - http://www.centricular.com
> Expertise, Straight from the Source
>
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