Archived from groups: rec.video.desktop,alt.comp.periphs.videocards.nvidia (
More info?)
Richard Crowley wrote:
<big snips throughout>
> "willbill" wrote ...
>> btw, your comment is interesting in that it implies/suggests that you
>> think some video boards are "optimized" for video
>> encoding?
>> if yes, what do *you* consider as key
>> criterions for a video board that is
>> optimized for decent video encoding?
>
> Frankly, I don't remember ever heard anything positive from anyone doing
> video capture with their graphics card. Dunno if this is because they
> are lousy by design, or whether they come with lousy software, or what?
ok
>
> Did you try any of the software that came with the card?
no i did not!
i told you that in my last response to you!
as far as i could tell (see the 2nd page of
the ref that you provided) it is "freeware"
and questionable
i paid for the Nero 6 Ultra package which has
the capture software (updated) that i used
>
> If you want quality video capture, you likely need
> a product whose primary design was for video capture.
that's my current thinking
>
>> fwiw, to me video encoding means a) good *2D*
>> performance in general, b) good true color
>> (32 bit) performance, and c) good performance
>> with displaying video files (avi, mpeg2,
>> and the many others that now exist).
>> is there more to it than that?
>
>
> Thost are all important when *generating* video (whether generating it
> from scratch in a video game, or whether reconstructing video from a
> compressed file like MPEG, etc.)
> But none of those things has anything to do with capturing or encoding
> video. Designing a card to optimize these things means that much less
> resources going into video capture/encoding.
my hunch is that you are wrong
which is why i was careful in my wording
maybe not much wrong, given that
encoding (normally) doesn't do
anything much on the PC screen
while it's going on
>
>> btw, it's an honest comment/question;
>> meaning i'm not baiting you
>
>
> My personal bias is that quality video capture/encoding
> is not done with a graphics card with "vivo".
that's the current open question
but in general i'm thinking that
it is true (based on my limited
current experience)
> Dunno why, but nobody has
> ever come to this neighborhood (rec.video.desktop) bragging about what a
> great video
> capture they are getting from their graphics card. They
> all come with complaints nearly word-for-word identical
> to yours. You can discard my opinion and biases and draw your own
> conclusion from this.
no not a problem, and thank you very much for
that comment.
my very limited experience suggests
that you are very correct
>
>>> What file format? Which codec?
>>
>>
>> tried at least 4 different ones of each.
>> with results ranging from godawful bad
>> to poor
>
>
> Without knowing SPECIFICALLY what these were, we have absolutely no way
> of evaluating your experience or
> relating it to what we have found successfull. This is an
> important question.
without being a total jerk, i agree
the whole thing is a total PITA!
fwiw, assuming i get a separate pci tuner board,
and assuming i get "decent/better" capture from
it (vs what i'm getting with this hi-end
nVidia VIVO board) i'll do a post in desktop
to you with your name in the title.
btw, i'll go back to this VIVO board before
i stick my foot in my mouth.
> Without these details, we can only
> offer the most generic (and marginally useful) advice.
>
>> reached the point where it occurred to me
>> that maybe it would be more productive
>> to ask if: a) separate TV tuner boards
>> give better results than video boards
>> with a built in VIVO chip?
>
>
> From what we have heard here (rec.video.desktop), MOST products
> designed primarly for video capture/
> encoding give better results than ANY graphics cards with a built-in
> vivo chip.
ok and good input.
>
>> and b) for some specific suggestions and comparisons
>
>
> You may have to ask (in the subject line) for people
> with experience with specific products.
>
>>> Is it just off-the-air recordings that you are unhappy
>>> with,
>>
>>
>> correct. TV antenna video signal (from a decent roof top
>> TV antenna), 6U 75 ohm coax cable (75 foot), into an external TV tuner
>> (a combo VHS recorder/DVD player),
>> pulling the "tuned" video signal into the PC (using a 6' composite TV
>> signal cable)
>>
>>> or is it ANY kind/source of video?
>
>
> [no response]
>
> This was a differential question
differential is a nice word.
> and you responded only
> to the first part. Without an answer to the second part,
> we can'd do a differential diagnosis as to exactly what is causing the
> poor performance you are complaining
> about. This is an important question. If you blow it off,
> we can't really help you much more.
the open issue is if dedicated TV tuner boards
give better results (to capturing to a file on
the PC's hard drive) than VIVO video boards do
(with the source from a decent external TV tuner)
>
> What does the picture look like right out of the tuner
> and into your TV screen?
doggone good!
> Troubleshooting 101: Look
> *critically* at EACH step in the chain to see where the
> signal goes bad.
i'm well aware of troubleshooting 101
>
> Troubleshooting 102: Connect a different source into
> your vivo video card and see if there is any change in performance.
troubleshooting 102 is gonna cost me
about $90
probably about the cheapest thing i can
do at this point
>
>> do they generally give a visually better result than a VIVO board?
>
>
> I don't have first-hand experience with either, but I'd bet
> money that a tuner card would do OTA recording better
> than a video card with a "Vivo" chip.
thank you for that opinion. fwiw that's
an honest thank you
bill
> One reason for my
> blind faith is that most have hardware MPEG encoding
> chips which people seem to find acceptable for general
> timeshifting and/or archiving TV shows.
>
> There are many additional benefits like: online listings, automated
> channel switching/recording (like a VCR or Tivo, etc.)
. I record from my Rogers box using the s-video output. Did
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