Oh HEll No!!!

[ApacheWraith]

I know I didn't just waste 35 minutes on nothing. A 35 minute capture uncompressed was like 22 gigs on my hard drive. How is that? I know I was capturing pretty high quality, but damn..........

Wraith

[ApacheWraith]

Yep, I sure did..........

[Dave B]

If your CPU can handle the load use HUFFYUV when capturing. It is a lossless codec so you will have EXACTLY the same quality as you have recorded but the file will be 7-8 times smaller.

[vitualis]

You can easily work out the capture size of uncompressed video.

SIZE = width * height * colour depth * framerate * time

Width and height in pixels
Colour depth in bits per pixel (e.g., 16 bit colour = 64K colour)
Framerate in frames per second
Time in seconds

For example, 352x288 @ 25 fps, 24bit colour:
- 7.25 MB per second
- 435 MB per minute
- 25.5 GB per hour

And this isn't even counting the space taken up by audio.

Obviously, if you use higher resolutions, it scales up proportionately.

Regards.

[sean madison]

oh and the HuffYUV codec does not appear to me as saving 7-8 times more than uncompressed video at all!
I've used it before with same res and fps and so on, file sizes are just alike; not the same but damn close

I say just use picvideo MJPEG

[ApacheWraith]

Sean, you say picvideo over Huffy? Is this soley for size purposes? What about the quality?

Vitualis, I asked a question in another post about the bitrate calculator taking resolution into consideration for fitting a movie on one disk. I was told that resolution doesn't affect file size. I believe Truman answered it. If you look at my other posts you'll see one that says bitrate calulator, just read it because I don't want to challenge or misrepresent what someone told me.

Thanks.
Wraith

[vitualis]

You don't get 7-8x compression with HuffyUV. I believe that it is closer to 3x which is generally what you can achieve in terms of lossless compression of images (without temporary compression).

PicVideo MJPEG on anything other than level 20 creates too many obvious JPEG compression artifacts for my taste (you can see them especially on sharp lines and the artifacts are obvious even after encoding to MPEG). At level 20, the compression you get is about 3x as well.

Regards.

[ApacheWraith]

So do you think Huffy is better to use than picvideo?

[equinox]

It depends how much hard drive space you have. PicVideo at 19 quality takes up about 3GB an hour (I think), but the resulting video does have many noticable blocks around curved objects, and things like that. If you do have the hard drive space, use HuffyUV, because the resulting video is lossless.

It all depends on ur hard drive space.

[Dave B]

Vitualis is right, 7-8 times smaller is acheivable only with MJPEG with a Q19 setting.

To answer ApacheWraith's question, you should use HUFFYUV over PicVideo MJPEG if you are not willing to introduce artifacts into your video for the sake of filesize.

Funnily enough, MJPEG at a lossy Q20 setting compresses video less effectively than HuffyUv

<font size=-1>[ This Message was edited by: Dave B on 2002-01-17 07:57:11 ]</font>

[salvius]

Ir archiving is your goal, Picvideo is fine. If you're further encoding it later, then stick to loseless.

[homerpez]

I do Huffy, 480x480 (saving space there), ADPCM compression on audio (so it only takes up 1/4 as much as uncompressed WAV)... I typically get a compression ratio of about 2:1 or so (according to V-Dub).

I purposely bought a 60GB drive to capture on, and I can get at least 2 1/2 Hours of Huffy capturing on it, which is not too shabby for a lossless codec.

Though the MJPEG sounds like it's still better than MPEG-2 on-the-fly...

[RaleighNC]

What OS and capture cards are u guys using??

thanx

[homerpez]

Mine's an AMD Athlon 1Ghz, 512MB Ram, Windows XP PRO, ATI AIW Radeon board for capture.

<font size=-1>[ This Message was edited by: homerpez on 2002-01-17 10:29:58 ]</font>

[ApacheWraith]

I have an old system, 500 mgz Celeron, 256 megs ram, Windows Xp Home capturing through a WinTvGo Pci. Planning on upgrading in the near future. I am going to build a dedicated system, I'm still looking at motherboard/Processor options......

Apache

[Snaxs]

Hey "Homerpez"",,,

how did you get Huffy to work on XP???

did you have to manually install???

did you manually install as if it were 'win95/98' or winNT/2000???

or just direct me to the nearest FAQ or HOW-TO..

thx..

[homerpez]

Hey "Homerpez"",,,

how did you get Huffy to work on XP???

did you have to manually install???

did you manually install as if it were 'win95/98' or winNT/2000???

or just direct me to the nearest FAQ or HOW-TO..

thx..

I think I just downloaded it, unzipped, and followed instructions. I think it installs by unzipping everything to one directory, then right-click on the .inf fle, and it will install the Huffy codec that way...

This is from memory but I think that's how it operates...

[Snaxs]

thanks for the response homerpez,,,
i figured it out