Strangeness with RF based encoding

General questions or discussion about HandBrake, Video and/or audio transcoding, trends etc.
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Firelight
Posts: 24
Joined: Fri Aug 13, 2010 9:06 pm

Strangeness with RF based encoding

Post by Firelight » Sun Oct 10, 2010 6:02 am

Basically, here's what I'm seeing. I have two files of the same source movie ... one 720p, the other 1080p. Both sources were liberal with the bitrate. I am encoding both to 720p using the presets I specified in Devices/Apple TV presets thread ... essentially the high profile preset.

Now, If I encode the 720p file at a constant RF of 20, I get something about 3GB large. If I encode the 1080p movie, I get a file about 1.8GB large. This seems like a very large discrepancy in size for what is essentially the same material.

I can get around to posting some logs, but I would like to know if there is a legitimate reason for this type of behavior and if anyone else can duplicate the issue.

mduell
Veteran User
Posts: 6547
Joined: Sat Apr 21, 2007 8:54 pm

Re: Strangeness with RF based encoding

Post by mduell » Sun Oct 10, 2010 6:34 am

I'd like to see the filters used and quality metrics on the source encodes.

thompson
Bright Spark User
Posts: 356
Joined: Sat Dec 12, 2009 8:04 pm

Re: Strangeness with RF based encoding

Post by thompson » Sun Oct 10, 2010 10:34 pm

Firelight wrote:I can get around to posting some logs, but I would like to know if there is a legitimate reason for this type of behavior and if anyone else can duplicate the issue.
There could be. That's why activity logs are required, so we can see exactly what is going on.

TedJ
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Joined: Wed Feb 20, 2008 11:25 pm

Re: Strangeness with RF based encoding

Post by TedJ » Sun Oct 10, 2010 10:58 pm

mduell wrote:I'd like to see the filters used and quality metrics on the source encodes.
Do they put those in NFO files these days? ;)

creamyhorror
Regular User
Posts: 134
Joined: Mon Jan 04, 2010 2:00 pm

Re: Strangeness with RF based encoding

Post by creamyhorror » Mon Oct 11, 2010 5:24 am

TedJ wrote:
mduell wrote:I'd like to see the filters used and quality metrics on the source encodes.
Do they put those in NFO files these days? ;)
:lol: :lol:

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