At this point in time H.265 is an interesting technical accomplishment that may well eventually become the replacement standard for H.264 but for the time being it is somewhat of a Red Herring as far as being in any way practical for dash cam users.
The simple fact is that as a dash cam user in late 2016, if you ever need to submit files, especially conformed originals to insurance companies, law enforcement, attorneys or courts of law, virtually none of these entities are likely to have appropriate computers and software with which to easily view H.265 files. In many instances your submitted files will be handed off to individuals you don't even know or will ever have any contact with, many of whom don't even know what the term H.265 means or how to view or work with such files. If these individuals are not able to easily and efficiently view your dash cam videos with the media players and tools they already have on hand and are accustomed to using you may find yourself out of luck, legally and strategically speaking.
As a member of DashCamTalk for more than three years it has become clear that only a very tiny percentage of dash cam owning members here at DCT have ever been in an incident or accident that has actually involved submitting files to the authorities, insurance companies or attorneys. The vast majority of videos presented here are basically entertainment in the form of "bad driver" or "gotcha" videos posted on YouTube or perhaps just demonstration examples. Oftentimes, I've seen statements and assertions made on these pages regarding what members might wish to, or plan to do and imagine doing with their dash cam files in the event of a car accident or other matter that indicate that they have no clue and no experience with how the process works when one is in a position of having to provide vital legally actionable evidence in a given matter.
I've mentioned here and there over time on DCT that I first became interested in dash cams more than six years ago due to an ongoing criminal matter regarding harassment by a certain contract breaking individual I once did business with who among other things often acts out recklessly and dangerously with his vehicle because he's angry that I hired an attorney to resolve the matter. The result was that I gained quite a lot of experience in submitting video files to law enforcement that eventually were used in a criminal prosecution that involved state prosecutors, defense attorneys, courtroom procedures, etc.
What I learned from this is that video files submitted and used in any type of legal matter must be as absolutely simple and easy for the most clueless, semi-computer literate bureaucrat, insurance adjuster, court official, law enforcement officer or attorney to view, copy and hand off to colleagues, other departments or agencies as possible. In addition, in many, many cases, the computers and software available to these parties (regardless of their individual knowledge or experience) are older and in some cases woefully out-of-date.
So, while H.265 and its capabilities are certainly of interest to us "enthusiasts" and it is worthy of much interesting discussion and speculation here on DCT, the fact is that at this point in time H.265 is of no practical value to current dash cam users and will not be until such time as it actually becomes a well established standard.
