[vdr] How to convert a JPEG image to an I-frame?

Reinhard Nissl rnissl at gmx.de
Sun Nov 11 15:45:44 CET 2007


Klaus Schmidinger schrieb:

>>> How does the attached PES file look like? In vdr-xine, I send it just
>>> once and it looks OK in xine.
>>> When it looks ok, I'll have to search for the commands which created it ;-)
>>> I think, I had specified an option to create progressive frames.
>> After running your file through
>>   mplex -f 7 -o test.mpg noSignal.mpg

You're right. That's why it nolonger has the extension .pes ;-)

>> and displaying test.mpg trough cPlayer::PlayPes() I get a pefectly
>> smooth display.
>> Would be great if you could find the commands that created this one.

See attachment. This is what file says about my input file:

noSignal.png: PNG image data, 720 x 576, 8-bit/color RGB, non-interlaced

> One more thing: the 'file' command reports
>   MPEG sequence, v2, MP at ML interlaced Y'CbCr 4:2:0 video, 4CIF PAL, 4:3, 25 fps
> on a file created with the posted script (before the mplex call),
> while for your noSignal.mpg it reports
>   MPEG sequence, v2, MP at ML interlaced Y'CbCr 4:2:0 video, CCIR/ITU PAL 625, 4:3, 25 fps
> Maybe this indicates where the problem might be?

Don't think so.

Dipl.-Inform. (FH) Reinhard Nissl
mailto:rnissl at gmx.de
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