This IS the Avid L2: Re: [Avid-L2] QT ProRes opens in QT 7 but not QT10

Wednesday, July 31, 2019

Re: [Avid-L2] QT ProRes opens in QT 7 but not QT10

I have seen this happen often enough making files as Same As Source from edit sequences with multiple codecs, and getting the message "No Same As Source resolution exists, would you like to make an Apple ProRes MOV?" and choosing Yes. This method of creating MOV files from Media Composer is busted beyond. It makes some weirdo files that (A) don't show up in Media Encoder for subsequent encoding, and (B) often don't play nice in other apps (as you're seeing).

The only ways I've been able to positively export files from Media Composer and have them "stick" is to:

- mixdown to the codec I want the export to be, then export Same As Source

- use AMA File Export and make MXF

It seems like anything else is a recipe for potential failure, and potential failure methods get banned from my house.

On Wed, Jul 31, 2019 at 5:26 PM hoplist hoplist@hillmanncarr.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

Avid Media Composer will open and play the file just fine as will Subbits, VLC, and Quicktime 7. QT Repair (Digital Rebellion) does not repair this particular problem.

Does not open in Quicktime 10.4 (Sierra). Get the "converting" message and then failure.

Adobe Premiere fails on import with the message "File contains more than one image description."

Cheers,
tod

On Jul 31, 2019, at 6:55 AM, Bouke bouke@editb.nl [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

Not sure, but I take it Avid will play them, since (AFAIK (well, not know, guess)) it does not rely on AVfoundation. (QT7 neither.)
For a test, download the demo of subbits:
https://www.videotoolshed.com/product/subbits-subtitler/

Run it, and do a 'link video' (NOT convert and link)
See if that plays. (That is definitely AVfoundation playback.)

Then, you could try to hack the files with my FourCC change app.
(You need to have a PC, but I could make a Mac version.)
https://www.videotoolshed.com/product/fourcc-change/

If you don't have a PC handy, mail me a (small) problematic example file and I'll have a look.

HAIL APPLE, HAIL APPLE.

Bouke

Edit 'B / VideoToolShed.com
van Oldenbarneveltstraat 33
6512 AS Nijmegen
+31 6 21817248

On 30 Jul 2019, at 20:19, hoplist hoplist@hillmanncarr.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

Recently I have been running into Quicktime (.mov) ProRes masters that Quicktime 10 can't open but QT7 can. It also appears that the current Adobe Premiere cannot but the older Adobe Premiere could because these same files are referenced in projects that can no longer read them properly. I've tried El Cap and Sierra systems. Can't test Media Composer at the moment, though that would be logical.

Simply resaving with QT7 doesn't fix it, but "exporting" as new ProRes file does. One possible common trait is that the masters were made by Media Composer, but that's based on a limited sample set.

Is there a problem with older ProRes files not being compatible with the new ProRes codec? I did not think this 32-bit to 64-bit transition was a problem for ProRes files..

Cheers,
tod