Support for HandBrake on Linux, Solaris, and other Unix-like platforms
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Hi, I'm using HandBrake 1.0.7 and I'm currently encoding my blu rays of Back to the Future 1-3. I'm using the same settings on all of them, but the first one got encoded with overall bit rate 12.7 Mb/s and has 11 GB whereas the second one has 7 026 Kbps and 5 GB. The source files have nearly identical attributes (the second one is slightly larger and has slightly higher bit rate) so my question is this - how can I have such big difference in resulting encode while using the same settings?
The complexity of the two video streams is different.
As an extreme example, If you shoot a 1 minute video where your filming someone just talking and not moving much, the video will be drastically smaller than another 1 minute video where the camera pans 360 degrees over the same period. The second video in this example as much more happening so requires a higher bit-rate to maintain all that extra data. In the first example, because large parts of the frames are unchanged, you can gain much higher compression without losing quality.
Additionally, noisy/grainy videos will produce larger output with constant quality encoding. You can use one of the denoise filters to help remedy this.