[Ffmpeg-devel] [ bug ] converting png to dv gives solid black

Måns Rullgård mru
Mon Mar 13 20:28:48 CET 2006

Erik Slagter <erik at slagter.name> writes:

> On Mon, 2006-03-13 at 15:07 +0000, M?ns Rullg?rd wrote:
>> > Okay, from a technical perspective it doesn't matter that much, I agree,
>> > the computer won't mind using a crystal (eg) 0.001% different to
>> > compensate for a "weird" frame rate. But personally I prefer having to
>> > write 30 fps to 30000/1001, don't you?
>> Sure.  The fact remains that there is lots of content recorded at a native
>> 30000/1001 fps frame rate.
> ... which could be broadcasted at 30.00 fps imho ... (as soon as
> dependencies on legacy analogue systems are gone, see other message)

Why?  A frame rate is just a number.

>> Not quite true.  The digital settop boxes will continue to output analog
>> composite or svideo signals for quite some time to come.
> Hmmm, that is true, I didn't think of that. I assumed everyone connected
> it's STB properly using scart/component. Are there any TV sets left that
> don't have RGB/component inputs?

Oh yes, anything other than RF and composite is rare in NTSC-land.

> Otherwise I don't see why a digital STB should be outputting
> these. VCRs are a completely different story of course. One
> advantage of connecting your STB using composite: you won't see the
> blocky artifacts of low bitrate channels ;-) ;-)
>> Sounds about like the situation here in the UK.  DVB-T isn't great,
>> but at least where I live, it is better than the analog signal.
>> It's widescreen too, which is always good.
> UK is much farther on this point. The BBC broadcasts all of it's
> variants in wide screen on sat using a more or less proper bit rate,

Yes, the BBC makes a point of maintaining good picture quality.  Their
satellite broadcasts use twice the bitrate of some other channels.

> it's a real joy to watch. Only this annoying bSKYb... they make it
> impossible to watch their (= almost all) channels outside the UK :-(

Ah, but they do pay my salary indirectly ;-)

M?ns Rullg?rd
mru at inprovide.com

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