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View Full Version : producer10 and anime: bitrate-quality settings?


vermaccio
4th June 2004, 14:49
i've an anime and i want to encode it by producer10.
i will use one of the many guis that exist.

But i've a question:
usually it's possible to set the "average bitrate" _or_ the "quality".

If i will choose "average bitrate", which bitrate have i to choose?

If i will choose "quality" (default is 70%) which quality-number have i to choose?

I want a good real video but i need to obtain a video not too big.

thank

damrod
4th June 2004, 20:19
euh

in rv10

video : rv10 vbr bitrate average 450 max 2250
EHQ : low or medium

audio : he-aac in 64kbits stereo

mode 2-passes


for an episode of 25min=> around 85Mo maybe less (75) maybe more (95)

dckc
5th June 2004, 08:35
You may try using the dropdup filter if it's not a fast action anime. This filter will drop the frames that it thinks they are the same ones. The dropped frames are not passed to the encoder, so the resulting file is a higher quality/smaller ones. Many frontends now support this filter in their GUIs. You may test if you can notice the dropped frames visually before "mass production" :)

Personally, I use the following setting:
RV10 EHQ Medium/High/Custom 80 (medium-high)
2-pass
average bitrate 550 Kbps
max bitrate 5000 Kbps
64/96 Kbps Stereo HE-AAC (AAC Plus, RA10 Plus, racp etc are the same thing)
Startup Latency 60 seconds
DropDup @ 1

I choose EHQ high, medium-high or medium depends on the time I have to encode the files. The higher, the slower.
The audio part consumes bandwidth. So, at a given average bitrate, better the audio, worser the video. But the difference in picture quality is very small at this high average bitrate.

The resulting amvb is around 95MB for a 25 min episode.

Note: some FAQs say that RV10 with "EHQ low" has about the same image quality as RV9 with "high encoding complexity".

vermaccio
5th June 2004, 08:46
thank you
:)

Do you know a filter to "clean" the anime before or during the encoding? i mean to clean the "dirty" of a recoded dvd or a tv dvd. The color-zones of the same color ar no more of the same color (example: in a red zone there are points of different kinds of red).

thank you

dckc
5th June 2004, 09:17
There are 2 filters you can try:
1. video noise reduction filter used during encoding
2. RV10 HFE2 filter used during playback

But, actually and sorry, I don't think these 2 filters can help in your case. You can give it a try anyway.

Information on RV10 HFE2:
http://forum.doom9.org/showthread.php?s=&threadid=75278

Quote from "RealProducer 10 User's Guide" :

Noise Filters
A by-product of poor quality in one or more links in the video production chain, video noise (which has nothing to do with the audio quality) can distort the encoded clip. These distortions are similar to the "snow" that often shows up in TV signals received over an antenna. The source of the noise is typically hardware, such as the video tape, capture card, or camera. Using professional-quality equipment and media helps eliminate video noise at the source. If your source video is high quality to start with, you won't need the noise filters.

Low Noise Filter
If your video input has a small amount of noise, turn on the low-noise filter. Because it has a small impact on processing power and won't degrade a video's appearance, the low noise filter is safe to leave on at all times. It's better practice, though, to use it only when necessary.

High Noise Filter
If noise greatly distorts the source video, try the high noise filter. Use it only if necessary, though, because it can add 30% or more to the encoding time. The high noise filter can also remove slight details, making highly textured surfaces look more smooth, which may not be desirable in all cases.


It is bundled with realproducer. Many frontends support this. If you use audiences or job files, add the following lines:

<prefilter xsi:type="videoNoiseReductionPrefilter">
<pluginName type="string">rn-prefilter-videonoisereduction</pluginName>
<enabled type="bool">true</enabled>
<level type="string">low</level>
</prefilter>

pogo stick
5th June 2004, 12:46
Originally posted by damrod
video : rv10 vbr bitrate average 450 max 2250
Originally posted by dckc
average bitrate 550 Kbps
max bitrate 5000 Kbps
And for what resolutions are you using bitrates like this?
Isn't it too small for high quality encodes?

Lagoon
9th June 2004, 02:51
It's enough for 640x480 24fps animes.