The heated debate/discussion that took place was with regard to DTS-HD MA and TrueHD tracks in Blu-rays and their average sizes when left unmolested. A general statement was made that I felt was not correct. I must admit that I never even thought about LPCM tracks found on early Blu-Rays. These were in fact quite large, however this was not what the heated discussion was about. In recent years DTS-HD MA and TrueHD have become the norm.
I had to really think about what titles actually had LPCM tracks as opposed to a DTS-HD MA or True HD track.
Pearl Harbor, Black Hawk Down, Rocky Balboa and Bruce Springsteen London Calling come to mind and their respective sizes are as follows: (These titles were de-muxed using the latest version of tsMuxer). I am sure that are quite a few more titles and other veteran rippers will chime in on the quest to find “Nessie”.
(A 10GB or larger DTS HD MA or TrueHD track)
Pearl Harbor – 8.84 GB - ~3 hours - ~2.94 GB/hr
Black Hawk Down – 4.46 GB- ~ 2 hours 30 minutes - ~1.78 GB/hr
Rocky Balboa – 3.72 GB- ~ 1 hour 41 minutes - ~2.24 GB/hr
Bruce Springsteen – London Calling - 8.33 GB - ~2 hours 52 minutes- 2.91 GB/hr
I also de-muxed the Godfather which has a TrueHD track and is nearly 3 hours in length as is Pearl Harbor and Guardians of the Galaxy 3D which has a DTS HD-MA Track to show a brief comparison of size between LPCM, TrueHD and DTS HD MA.
Godfather – 5.1 GB -~ 3 hours- ~ 1.7 GB/hr
Guardians of the Galaxy 3D – 3.89 GB ~2 hours 30 minutes- ~1.55 GB/hr
It seems that the average size per hour is as follows:
LPCM tracks: ~1.80-3.0 GB per hour.
True HD tracks: ~1.5 -1.7 GB per hour.
DTS HD MA tracks: ~ 1.5 – 1.7 GB per hour.
Most movies are approximately 1.5 to 2 hours in length. Based on this, the average size of a DTSHD MA or TrueHD track can range between 2.25- 3.4 GB. Give or take a few %. This is based on the few movies that I de-muxed this morning to get an idea of what I believe to be correct and accurate information. A LPCM track can be nearly double or even triple the size of a True HD or DTSHD-MA track.
For those with Atmos Setups:
John Wick- ~1 hour 40 minutes - 4.13 GB- ~2.36 GB/hr
Transformers 4- ~2 hours 45 minutes- 5.79 GB - ~2.10 GB/hr
TNMTs- ~ 1 hour 40 minutes - 4.37 GB- ~2.49 GB/hr
Expendables 3- ~2 hours 11 minutes - ~5.34 GB- ~ 2.44 Gb/hr
It seems that Atmos tracks are about 25-30% larger on average than TrueHD tracks.