ons, 29.03.2006 kl. 19.13 skrev Hans Verkuil:
> On Wednesday 29 March 2006 18:58, Kyrre Ness Sjobak wrote:
> > I have previously "moaned" about lack of documentation in ivtv, and
> > i'm doing it again. So i ask: Where is it? The "documentation" link
> > at ivtvdriver.org is at best an extended usage message... There is
> > some more in the docs folder of the source distro, but this is
> > somewhat lacking - some pieces are documented well, others aren't
> > documented at all. And much of that documentation could well be
> > copied to the wiki - what about using "README.radio" as wiki page for
> > ivtv-radio?
> >
> > Other utils, such as "ivtv-encoder" isnt documented at all, exept one
> > line in README.utils - which states its (incomplete) name, and a very
> > brief usage message.
> >
> > Of cource, i could go read the source - but i really don't want to.
> >
> > One last question: In
> > http://ivtvdriver.org/index.php/Ivtvctl
> > it is stated that i can set encoder params with the option
> > "stream_type", and that i here can select (among others), DVD. What
> > does this mean? Is it a kind of "encoder preset" suitable to creating
> > a DVD?
>
>
> Basically the docs directory is all there is. In practice the only
> utilities that are commonly used as ivtvctl, ivtv-tune and ivtv-radio.
> The -h option basically gives you the documentation. The cx25840ctl and
> ivtvfbctl can be used to control the cx25840 A/V digitizer and the
> frame buffer device for a PVR350. Both are rarely used. The other tools
> are more example code then anything useful. I've used ivtv-mpegindex.c
> on occasion as it is a simple template source to parse an mpeg stream.
>
> I don't mind if someone makes wiki pages for these utilities, I
> definitately don't have the time for it.
>
> With respect to the stream types: these are the available types:
>
> 0=Program stream
> 1=Transport stream
> 2=MPEG1 stream
> 3=PES A/V stream
> 5=PES Video stream
> 7=PES Audio stream
> 10=DVD stream
> 11=VCD stream
> 12=SVCD stream
> 13=DVD_S1 stream
> 14=DVD_S2 stream
>
> Currently this is documented in fw-encoder-api.txt, not exactly the most
> obvious place. Volunteers?
>
> Hans
[QUOTE fw-encoder-api.txt]
Name IVTV_API_ASSIGN_STREAM_TYPE
Enum 185/0xB9
Description
Assign stream type
Param[0]
0=Program stream
1=Transport stream
2=MPEG1 stream
3=PES A/V stream
5=PES Video stream
7=PES Audio stream
10=DVD stream
11=VCD stream
12=SVCD stream
13=DVD_S1 stream
14=DVD_S2 stream
[/QUOTE]
Yes, the wiki also tels me that. But what is the difference between a
"DVD stream", a "DVD_S1" stream, a "Transport stream" or a "Program
stream"? Is it a quality setting (some "preset"), something todo with
how things are encoded, or what is it?
Say i want to create a stack of DVD's from my home videotapes. Should i
just set streamtype to "DVD" and that that will get me the correct
everything, including a fitting "Gigabyte per hour"? As with the
standard setting, it uses something like 6 or 7 gigabytes to get just
under 2 hours of captured data - while proffesional DVD's can manage 3
hours or so (ok, they have more room than the 4.7 GB offered by
dvd-burners, but...)
--- Kyrre
_______________________________________________
ivtv-users mailing list
[email protected]
http://ivtvdriver.org/mailman/listinfo/ivtv-users
