[Frameworks] Mac OS Catalina

[Michael Betancourt]

This is a fairly common problem with Apple and the video codecs included
with their OS. Apple has a tendency to make undocumented (or at least not
public) changes to even commom video codecs such as H.264 so that older
files encoded with them do not always play correctly, if at all. Since some
files play and others don't, it sounds like you have a compatibility issue
and it either has settings that are not longer recognized, or uses a codec
you just don't have any more.
You can get some work arounds, such as Parian that help a lot, but building
a library of codecs that you (re)install with each new machine is the only
way I've found to consistently escape this problem.

Michael Betancourt
Savannah, GA USA


michaelbetancourt.com | vimeo.com/cinegraphic


On Fri, Jan 10, 2020 at 3:23 PM Dominic Angerame <dominic.angerame at gmail.com>
wrote:

> Thanks for all this.. I do backup everything on Time Machine once an hour.
> I did not heed the warning on Premier. The type was so small and was
> talking about tech things beyond my knowledge so I ignored it. For some
> reason it is now reading my newest film o 2020 Premier however all my edits
> are gone, so I need to start all over. I was just in the final stage of
> completion. However when an operating system will not open “Quick Time”
> that has been supported for years is just not correct. Some of my files are
> opening and it is taking a long time. They are all backed up on an external
> hard drive but what good are they if I cannot open the files to edit.
>
> D
>
> On Jan 10, 2020, at 11:21 AM, Fred Camper <f at fredcamper.com> wrote:
>
> On 1/10/2020 12:35 PM, Adam Hyman wrote:
>
> First, to help others before they run into this, there are several general
> rules before updating an Operating System.
> 1. Always backup everything to an external hard drive
> 2. Always backup everything to a second external hard drive
>
> I was going to reply similarly, but did not want to seem obnoxious about
> it. I second, third, and fourth Adam's comments. Perhaps these warnings
> will benefit others, though I thought everyone knew to back up by now.  It
> has been known for decades that hard drives can fail unexpectedly and
> unpredictably. All hard drives. I actually have four complete physical
> backups, on multiple exterma; hard drives, and they are divided into two
> different locations, in case of burglary or fire. Also consider additional
> cloud backup. I used to have that, and am planning to add it again. One
> should never depend on a single computer for data.
>
> Similarly, I no longer accept "my computer crashed" (the modern equivalent
> of the old "The dog ate my homework") from students. My syllabi now
> required backing up assignments to a cloud service while you work. In a
> crash, go to a library computer and continue. If there is a massive failure
> of, say, a Microsoft cloud backup, yes, I will accept that as an excuse.
>
> In Dominic's case, though, could the files still exist, and just not be
> readable by this new "insanely great" trash-the-past OS?
>
> I have never used Apple. I really loathe Apple, but will spare you the
> reasons here. But there is also a lesson from the PC world, going back 25
> years to Windows95: it can be unsafe to switch a computer to a new OS.
> Therefore, I have never done this. The reasons make sense; a new OS changes
> a lot of things, and there might even be hardware incompatabilities. Wait
> until you get a new computer with a new OS.
> Fred Camper
> Chicago
>
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