Applying VirtualDub filters and the resulting file size...

[buzzinhornets]

I want to apply a virtualdub filter (both Logoaway and Sharpen) to a divx film I have. But VirtualDub says it needs to be in full processing mode... But if my original .avi file is 450mb then after the full processing mode the new filtered file will be like a zillion mb! Is there something I'm missing? Is there an easier way to go about this? Should I cut the file up and convert it that way? If I just ran the full process mode and saved the new .avi, could I later compress it? or is it already compressed?

Keep in mind that I only have a 6.4gb harddrive yet I want a sharp picture in my divx movies and roughly the same file size as they currently are. Thanx.

[Truman]

Select video compression, select the codec and configure.
Look at the tool section for a divx calculator to end with the filesize, that you want.

[buzzinhornets]

So you're saying I need to first save the .avi file by applying the filter to it under FULL Processing mode.... but it seems that for a 500mb .avi movie after saving the new .avi after full processing it would like many Gigabytes big... and my drive is only 6.4gb. Also, what you reccommended Truman is to compress the .avi after the filters have been applied... what I mean is, to apply the filters I would have to:

1) load the original .avi file apply the filters and save the .avi file with full processing mode video
2) Take this new .avi file load it in VD and select compress video, and save the avi once again to get a smaller file size...

But after step 1 won't I run out of drive space????

[buzzinhornets]

For example my original divx file is about 500mb, but when I start to run VD with full processing mode the projected file size is about 30 GB!!!!! Help

[kinneera]

He's suggesting you combine your 1 and 2 steps. Load the .avi in VirtualDub, select your filters, select Divx compression, and then save.

[buzzinhornets]

What divx codec do you use? I have 3: DIVX mpeg4 Low-motion, DIVX mpeg4 high-motion, DIVX mpeg4 codec 4.0 a50, but virtual dub said my low-motion codec was hacked, and may cause problems... is there a better Divx codec to download?

[Truman]

I am not a DivX user. The only divx codec, that I had tested is DivX 3.11 alpha low motion. The quality is quite good. It is a hacked M$ codec, thats why Vdub gives you that message. Don't care about, it will work properly.

[Graham Meredith]

Ignore the hack warning, that's Avery Lee's (the creator of VirtualDub) disclaimer, saying that DivX is an altered version of Microsoft's original MPEG-4 codec, and that he takes no responsibility for users using illegally hacked modified software. The stuff about causing problems is just a notice to say that DivX isn't formally supported by VD, but I use it and have no problems, as do a hundred thousand other DivX-ers.
Regarding which DivX to use, if your film is not a real action smash kill blam, and doesn't have lots of fast scenes, use the low motion, it gives better resolution and sharpness to the movie, but it will make fast scenes appear jerky. If there are a lot of fast action shots, use the high motion, it gives smoother motion, but at a cost to sharpness. Try a small section using both, and see which works best for you.

Graham

<font size=-1>[ This Message was edited by: Graham Meredith on 2001-08-27 17:58:27 ]</font>

[buzzinhornets]

OK, I applied the filters and the compression at the same time, but the file was still more than twice the original size... what else can I do to decrease the file size after applying filters?

[KingJohn]

Hi take a look at the original file to see what codec was used, then use the same when you save it. The size should be around the same then. You might have a new Mpeg4 original, but selecting an older DivX Mpeg 4 when saving.

Right mouse properties, or use Vdub File > File Info

[buzzinhornets]

How do I know what codec was used? Where can this info be found? Using VirtualDub or TMPGENC?

[buzzinhornets]

OK, so you're saying if I apply filters (sharpen and logoaway) to the .avi file and then save it with the same codec as it was originally (Microcrap MPEG4 V3) then the new fixed up sharpened video will be nearly the same size?

[buzzinhornets]

Nope, I tried that codec as the compression codec and the resulting file size was many times greater than the original. What's the point of these great filters if I can't apply them to a 450mb .avi movie? What am I doing wrong?

[buzzinhornets]

I ran a little test applying the filters on a short piece of a movie and originally it was 4900kb and after the filters and video compression using the same codec it was 10200kb... so my dilemma is that if I fixed up the whole movie there's no way it would fit on a vcd...

[Truman]

To get a smaller filesize, select a lower bitrate.

[KingJohn]

Hi

Well I have save a few new AVI's and have not noticed any large increase in size. I would need to do an experiment to see what's happening.

I can't see how applying a logo away could increase the size, but maybe the other filter is.

Will do a few tests

[buzzinhornets]

If you want to help me out... I got this .avi movie from Morpheus file-sharing (www.musicccity.com I think) and the movie was called something like "Durrassic Bark III" (a documentary on dinosaurs I think ) which came in two parts both about 220mb each. I joined them with Pecks Power Join and then applied the filtered and as the new .avi was saving the screen which tells you about the progress of the saved new .avi showed that the projected file size would be over a gigabyte (up from the original size of about 450mb). Please help me, cause all you vcd guys must be able to apply filters to long movies and get proper results which fit on a 700mb CDR. Also, someone above said change the bit rate... how do I do that in VirtualDub and by how much should I reduce the bitrate to keep the picture quality yet reduce file size??

[KingJohn]

Well I did a lot of tests, but having read your post again I don't think they are relevant, as I am now under the impression you are trying to fit the whole movie onto one VCD ?

When the AVI is converted to VCD.mpeg you then take a look at the size, without cutting trailers or reducing the quality you are going to have to cut this in half. Most movies usually come part1 part 2 then they are ready to fit on 2 VCD's after conversion. They are full length movies and you either cut them in half before you convert them or you cut the mpeg in half for burning.

If you try to fit a 2 hour movie onto 1 VCD, it wont be worth having, cutting most of the beginning and end and reducing the quality right down, is it really worth it.

As an example, I just had a look at the last one, very good quality
Disk 1 452Mb
Disk 2 452Mb
Disk 3 452Mb

I did a 3 way split, it was obvious it would not fit on 2 disks 1356mb 2 x 678Mb ? too much for 650 should have fitted on a 700Mb but there are other files, and I did no cutting. We will rock you (Clue)

[Truman]

Select Video> compression. Then select the codec, that you want to use. Anywhere at that window is a "configure" buttom. Hit that and probably you can change the data rate. At least with DivX 3.11 alpha you can do that. To calculate the datarate, use a DivX calculator, for example DVTool. This helps you to calculate the bitrate, that you have to set to end with a ***MB file size.

[KingJohn]

Dont join them, convert them and burn 2 disks - even with your filters they should fit on 2.

No the movie is called "Duracel Mark 3" I have it on 2 disks.

[saspgmr]

Are you sure that you are saving the new file at the same resolution as the original? I think if the original is 320x240 and the new one is 640x480 the new file will be much bigger unless you apply a lot of compression. (Just a guess.) Good luck.

[KingJohn]

Just had a look
part1=205Mb converted to 569Mb
part2=222Mb converted to 615Mb

Total 1184Mb VCD.Mpeg so no room on 1 cd, 1184/2= 592Mb with your logo and filter you should still have room for it on 2 CD's.

[Truman]

Saspgmr, a higher resolution does not effect a noticable higher file size.
LetmeinforGodsake, are we talking about the same thing? As far as I understand buzzinhornets, he don't make VCD, but DivX video. Correct me if I'm wrong.

[KingJohn]

<TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font size=-1>Quote:</font><HR size=1 color=black></TD></TR><TR><TD><FONT SIZE=-1><BLOCKQUOTE>
LetmeinforGodsake, are we talking about the same thing? As far as I understand buzzinhornets, he don't make VCD, but DivX video. Correct me if I'm wrong.
</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR size=1 color=black></TD></TR></TABLE>

Well I erm ah but... what... No.. yes he said..

"Please help me, cause all you 'vcd' guys must be able to apply filters to long movies and get proper results which fit on a '700mb' CDR."

So I "guessed" his end results would be a VCD. After all, what use is spending all this time converting and applying filters if you just want to watch a movie.

So I guessed he is going to store it somehow, Then when I seen the above I "guessed" the final will be an VCD

oops, AVI on 1 cd, but his keywords VCD and CDR above made me think its going to be converted to VCD.

I'm reading to many posts I think

What ever, the movie at 400Mb is going to fit, I cant see it double in size no matter what he did wrong.

<font size=-1>[ This Message was edited by: letmeinforgodsake on 2001-08-30 14:07:51 ]</font>

[buzzinhornets]

Thanx for all the info guys... I'm still a rookie at this stuff, but I'm slowly getting the hang of it. And yes, at some point I plan to convert these avi to mpegs. Also, so most VCDs you buy in a store come as 2 disks? Wow, I always thought they just super compressed the movie onto 1 cd.

[Truman]

It is a waste of time to save as avi(divx) one more time, if you actually want to make a VCD. And in that case you don't have to care about any filesize of a temporary file.
Just a thought.

[buzzinhornets]

OK, so how would I just apply the filters and go straight to VCD... if your suggesting using VirtualDub to act as a frameserver, i already tried that (it's posted on the forum just a bit down or up) and TMPGENC wouldn't open up the video.vdr.avi file...

[KingJohn]

Well I guessed right then
Anyway as it was already said, dont worry about the size of your AVI's, once converted to mpeg "Then worry"

Oops another post, well make your new AVI with the logo removed, then convert to VCD.Mpeg

Is it worth it? You get use to them after a few min.

[Truman]

<TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font size=-1>Quote:</font><HR size=1 color=black></TD></TR><TR><TD><FONT SIZE=-1><BLOCKQUOTE>
On 2001-08-31 15:14:07, buzzinhornets wrote:
OK, so how would I just apply the filters and go straight to VCD... if your suggesting using VirtualDub to act as a frameserver, i already tried that (it's posted on the forum just a bit down or up) and TMPGENC wouldn't open up the video.vdr.avi file...
</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR size=1 color=black></TD></TR></TABLE>

Open the divx in VirtualDub, add your filters , start frameserver. Save the *.vdr file.
Start TMPG, select *.vdr as video source, set whatever you want or load a template and encode.
It is pretty easy, TMPG accept .vdr files. You don't have to rename it to .avi or install a handler.

[buzzinhornets]

But why in the FAQ about frameserver do they say name the file as "video.vdr.avi"?