A problem with fire.

[thegecko]

ok tmpg hasnt got this problem but from my own test ive concluseded mainconept gives me less artifacts on lower quality source files to dvd. But heres my problem. ina fire scen or very high motion scen the screen really blocsk up real bad. ive run my source file threw bitrate viewer and the BR doesnt go over 3000. i would also note that the source file doesnt have this problem.

so i set VBR in maincept min 1800 avg 2500 and max 3000. the picture is exact same as the srouce Acept in this very high motion and fire scenes. can any1 help me?

here is an example of the problem ive got.

http://ninjagecko.sytes.net/temp_images/encode/fire.jpg

[DJRumpy]

Yes. Lower your minimum. Try 0, or 300. Your strangling VBR by setting it so high. You can also consider setting your AVG lower. SVCD resolutions do not require 2500 kbps all the time. By lowering your AVG setting a bit (try 1500-2200 kbps depending on the length of your video of course), you give it more range to work with, which is key to getting good VBR results.

[thegecko]

cheers m8ty ill try that

[thegecko]

nope ive tryed all that stil lgot major blockiness issues god dam mainconcept is sweet why it gotta do this to me

[DJRumpy]

In your test, you did do a large enough clip which included a slow scene as well as the busy scene.

[thegecko]

yes slwo scense are kool. ijust did another test using half res in mainconcept and the pixelation didint happen as bad. so it seems using 720x576 is giving me a problem :\ wich is strange.

[SLK001]

Just what are you trying to make? DVD or SVCD?

[thegecko]

dvd but mainconcept is blocking up really badly no matter what i do

[DJRumpy]

Now it makes sense. I assumed you were already using half-d1 or SVCD with those bitrates. You have to increase the bitrate if your planning on using a higher resolution. Higher resolution requires more bitrate to reproduce without macroblocking. If you increase only the resolution, without increasing bitrate, you can expect quality to deteriorate.

You should try CCE. It will let you do more than 2 passes, with good quality for Full-D1 at lower bitrates.

[thegecko]

Now it makes sense. I assumed you were already using half-d1 or SVCD with those bitrates. You have to increase the bitrate if your planning on using a higher resolution. Higher resolution requires more bitrate to reproduce without macroblocking. If you increase only the resolution, without increasing bitrate, you can expect quality to deteriorate.

You should try CCE. It will let you do more than 2 passes, with good quality for Full-D1 at lower bitrates.

agreed but CCE just crashes when i load in my fake avi file

im frameserving with Vdub aswell. i used dvd2avi to make d2v file then vdub to add a resize filter. tmpg wil lwork this way and mainconcept but not cce

also why is tmpg ok @ doing full res dvd with lower bitrates theres no blockiness there.

[thegecko]

any1 ?

[snowmoon]

What version of CCE and what is your CPU?

[thegecko]

What version of CCE and what is your CPU?

cce=2.5 cpu=2600xp

[snowmoon]

CCE 2.5 has problems with audio encoding under AMD processors.

Check the web and search the forums for exact info, I know there was a workaround.

[thegecko]

do u have any idea why mainconcept is blocking badly even tho the others are not. i really liek it in most scens its fair superior to tmpg

[snowmoon]

up the max bitrate... it's the only way ( keep min and average the same ).

[DJRumpy]

If I remember correctly, the problem was specific to CCE and AVISynth. You had to put a ResampleAudio command, even if it was already at the desired frequency. I don't remember any problems with VFAPI. Is there an option in VFAPI to change the way the audio is served?

[thegecko]

If I remember correctly, the problem was specific to CCE and AVISynth. You had to put a ResampleAudio command, even if it was already at the desired frequency. I don't remember any problems with VFAPI. Is there an option in VFAPI to change the way the audio is served?

i got cce working but the pics not as good in the lower scens as it is in the larger scenes. its really pissing me off now.

[DJRumpy]

Make sure your settings are for a low bitrate video. Set your matrix to 'Very Low Bitrate'. Make sure your doing multipass vbr with a low min (0 or 300). Also make sure that the test clip your creating isn't all just fire. VBR needs a mix of easy and hard scenes to work properly. If your test clip is all fast motion, then VBR will have no where to borrow it's bits from.

Give us a quick rundown of the settings your using, and your output format (SVCD, VCD, DVD, whatever).