how to reset video codecs to oem, bad pack ruined video quality

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Level 1

15 points

how to reset video codecs to oem, bad pack ruined video quality

stupidly installed a discontinued by 11 years perian to my macbook pro m1 because quicktime player always looked best to me and wanted to try mkvs on it, didn't work, what's worse all videos all look bad now on my macbook.

Clicked remove perian in preferences and it says not installed removed preference pane but damage was done and now my video has some static fuzz, I don't know what it did but it ruined it, I even tried reinstalling ventura, but it kept all my files which I wanted, but codecs still screwed and video still bad.

Where is the default codecs for ventura located? There's nothing in quicktime in either library, empty, I don't want to nuke the whole computer but I will if I have to as it's newly set up and I can redo, video looked quite good before.

MacBook Pro (M1, 2020)

Posted on Jun 29, 2023 8:07 PM

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Answer 1

Top-ranking reply

Luis Sequeira1

Level 9

74,148 points

Jun 30, 2023 11:40 AM in response to GGarrett2

Just a quick note to say that with an M1 Mac you do not need to completely erase the system drive.

The OS itself lives in a sealed readonly volume.

You can start fresh with just a few steps:

1) BACKUP - at least one Time Machine, and another separate backup

2) System Settings->General->Transfer or Erase, choose Delete Contents and Settings

This leaves the system intact, but deletes all the users, third party applications, extensions, etc.

3) When your mac restarts, it will act just as if started for the first time. You will have the chance to import content "from another mac, disk or Time Machine backup". Select the TM backup from step 1 and - CRUCIALLY - elect to migrate ONLY the user accounts (NOT applications, NOT settings, NOT other files),

4) Install the applications you really need, either from the App Store or the developers' sites.

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Answer 2

Jun 30, 2023 2:16 AM in response to GGarrett2

Please run Etrecheck and post its full report here.

Use the “additional text” button and paste the report into the text box.

From the report we should be able to tell which files may have remained from this installation of Perian.

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Answer 3

Jun 29, 2023 9:26 PM in response to GGarrett2

Maybe some Perian component is still installed and must be manually deleted from ~/Library or some other folder? Do you see the issue when logged into another user account?

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Answer 4

Jun 30, 2023 9:58 AM in response to GGarrett2

I see no remnants of Perian there, but the report does show a few issues that should be considered.

You have many external hard drives, and at least one is basically full (less than 5% free space). This can seriously degrade performance. Do you need all these drives connected all the time?

There have been several crashes.

You have the sworn enemies of professional video applications: Chrome and its evil keystone thugs. They hog the system videotoolbox and can cause all sorts of failure and crashes. See http://chromeisbad.com for an explanation and how to get rid of them. They are so bad that one will need to delete FCP and get a new copy afterwards.

You have not one bug two vpn applications. Consider if you really want to use them.

Public VPN are anything but private

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Answer 5

GGarrett2 Author

Level 1

15 points

Jun 29, 2023 9:44 PM in response to Matti Haveri

I looked everywhere can't find anything unfortunately, no way this movie was so flickery and I watched it just the other day looked fine, tried guest account still problem, I guess I might have to factory reset, will prepare my mac, my fault ;/

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Answer 6

GGarrett2 Author

Level 1

15 points

Jun 30, 2023 9:50 AM in response to GGarrett2

everything seems fine but maybe it's all in my head but I doubt it, there is some static flicker especially on a test bluray I tried, might have to reinstall if you can't find any trace but thanks for trying first.

regards.

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Answer 7

GGarrett2 Author

Level 1

15 points

Jun 30, 2023 10:16 AM in response to Luis Sequeira1

thanks for your comments, yeah I bought this second hand few years ago, only set up few weeks ago, should probably start fresh myself, although it seemed clean at the time but could use a redo probably, just have to save my serials, settings, make sure everything will be restored, will take some time then go for it. Should add time machine too.

The external drives are just drives in docking stations, the full one I'll swap out eventually, but yeah, I like to keep projects and media on them doesn't seem to hurt performance computer is fast, should be better when get rid of some junk, will think about chrome but am pretty deep into it.

will do the factory erase from general transfer when I get around to it, lucky apple makes things pretty easy to get things back to how they were, hope paid apps don't think I'm second user though.

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