Output Size Calculator

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TheInfamousWaffles
New User
Posts: 1
Joined: Mon Mar 13, 2017 1:36 am

Output Size Calculator

Post by TheInfamousWaffles » Mon Mar 13, 2017 1:42 am

Please describe what you would like to see added to HandBrake: I'd like an approximate output size calculator (or the knowledge of how to do it on my own if I must).

Why would you like to see this added: This will really help me not waste so much time re-encoding over and over again until I find the right RF for the output size.

What version of HandBrake are you currently running: 1.0.3 64-bit.

What operating system and version and you currently running (e.g. OSX 10.11, Windows 7, Ubuntu 14): Windows 10.

Woodstock
Veteran User
Posts: 3051
Joined: Tue Aug 27, 2013 6:39 am

Re: Output Size Calculator

Post by Woodstock » Mon Mar 13, 2017 1:23 pm

There is no way to predict the size UNLESS you limit to a specific bit rate, and use two-pass encoding to achieve it.

Using constant quality (RF) uses the bit rate necessary for whatever section of the video it is working on, so it changes dynamically with the complexity of the video. More detail? More bits. 10 seconds of a constant frame? Less bits.

musicvid
Veteran User
Posts: 3179
Joined: Sat Jun 27, 2009 1:19 am

Re: Output Size Calculator

Post by musicvid » Mon Mar 13, 2017 2:47 pm

Time (Sec) X Bit rate (Mbps) X .125 = File Size (MB)

rollin_eng
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Posts: 3067
Joined: Wed May 04, 2011 11:06 pm

Re: Output Size Calculator

Post by rollin_eng » Mon Mar 13, 2017 3:52 pm

TheInfamousWaffles wrote:
Mon Mar 13, 2017 1:42 am
This will really help me not waste so much time re-encoding over and over again until I find the right RF for the output size.
This is not really the way to use RF encoding.

If you need to create a video of a certain size use ABR and an online bitrate calculator.

musicvid
Veteran User
Posts: 3179
Joined: Sat Jun 27, 2009 1:19 am

Re: Output Size Calculator

Post by musicvid » Tue Mar 14, 2017 1:35 am

What is your need for a fixed file size? Is it storage or bandwidth?

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