I believe I've tried both... lemme check...

Mp4 shouldn't demand quicktime but m4v possibly does as it's an Apple format.

Ok, I don't have much experience with Handbrake as well, or video formats/codecs either, I'm new to this field of endeavour, maybe I'm doing it wrong...

See here: http://postimg.cc/Snpc4QSr

For the Video Codec drop-down, I've tried both H.264 (first option), and MPEG-4 (3rd option).

On the first screen I selected MP4. http://postimg.cc/yJpJD7H2

Anything else you think I'm missing?

Alright, I'm trying again encoding to .mkv, I seem to recall having trouble importing an .mkv file to Vegas a few days ago, maybe it was a fluke that the .mkv was encoded in such a way that Vegas had trouble with it.

Let's see if this .mkv file will import into Vegas, and if the Apple crap will be finally exorcised.

No, Vegas can't seem to import .mkv files... which is why I'd not purchased it many years back. I didn't expect this to still be an issue.

Could someone let these people know that we've put many men on the moon well over 50 years ago... the logistics, the sheer complexity of this task far eclipsed the difficulties of importing an .mkv file into a $400.00+ piece of software.

Unless I'm missing something basic here, this inability to import any file into a program should be very shameful, actually.

You need to export as mp4 (file type). MPEG-4 is a codec type. Confusing I know.

So your mp4 on the first screen is okay. With the video codec I personally leave it on the default H264. What the difference is I don't know. My limited understanding is that H264/MPEG-4/AVC are all much the same.

With the first screen check that the "Save As' at the bottom shows mp4 (and not m4v) at the end.

Lastly you can upload images directly to this forum. It is preferred to using an external site. There's an upload button

Therein lies the problem, on the first Handbrake screen (the Summary screen), if I choose MP4 in the drop-down, at the bottom, I see Save As:, the filename, and m4v as the file extension. I see nowhere that I can change the output type, I can't imagine that just renaming the file from m4v extension to mp4 would change how the file is encoded, but I guess I can try that.

Is there a reason you need to use mkv?

Anyway in VMS Platinum 17 there's an option in Preferences/File I/O to activate a mkv reader. I assume it's the same in Vegas Pro. It has only been introduced relatively recently. Which version of Vegas Pro are you using?

Ah! I could try VMS... ok... sec...

In Handbrake go to Tools/Preferences/Output Files and select mp4 as below

I wouldn't have thought this necessary if mp4 is selected in your first screen but this is how I have it and I never have problems.

LOL!... Well I'm really thinking "Grrrrr!"... I just fired up VMS and never even got into it, program crashed.

Going to try Handbrake again with settings as you've suggested. That might do it.

Vegas has had this long-standing problem with being like an adolescent with food fussiness, it whines every time you want to import a file, if it doesn't like them, at least it should be giving you the option of doing an automatic conversion to a format that it has a taste for.

No, changed the settings in Handbrake, converted/re-encoded again, still complaint about QuickTime. 😡😡😡

Appreciate your help though, I'm starting to realize that my past aversion to Vegas was well-founded and that I might have made a big mistake in thinking that the past issues would surely have been dealt with by now.

weird that MP4 requires QT... although of course need to see in more detail what Video and audio codec it uses. But for most MP4, it uses AVC video and AAC audio. Other is HEVC video and AAC Audio.

Can you post the Mediainfo of that MP4?

https://www.vegascreativesoftware.info/us/forum/faq-how-to-post-mediainfo-and-vegas-pro-file-properties--104561/

Ok, MediaInfo:

General
Complete name : Y:\Covid\Covid-DrRichardBartlettCovidCureNebulizer.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/avc1/mp41)
File size : 130 MiB
Duration : 36 min 4 s
Overall bit rate mode : Variable
Overall bit rate : 503 kb/s
Writing application : Lavf58.39.101

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.1
Format settings : CABAC / 3 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 3 frames
Format settings, GOP : M=4, N=90
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 36 min 4 s
Bit rate mode : Variable
Bit rate : 370 kb/s
Maximum bit rate : 1 500 kb/s
Width : 960 pixels
Height : 540 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 (30000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.024
Stream size : 95.6 MiB (74%)
Codec configuration box : avcC

Audio
ID : 2
Format : AAC LC SBR
Format/Info : Advanced Audio Codec Low Complexity with Spectral Band Replication
Commercial name : HE-AAC
Format settings : Implicit
Codec ID : mp4a-40-2
Duration : 36 min 4 s
Bit rate mode : Constant
Bit rate : 127 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 23.438 FPS (2048 SPF)
Compression mode : Lossy
Stream size : 32.7 MiB (25%)
Default : Yes
Alternate group : 1

Does that make any more sense?

Ok, checked the file properties on the same file I was trying to import into Vegas, from Vegas, as per instructions you'd sent above.

The results from the MediaInfo program, that I copy/pasted above, were also from the file I have trouble importing into Vegas.

I wonder... I think I'd tried setting the Audio to .mp3, thinking that I might further reduce the file size that way... maybe that is what caused the QT prompt prob? I wouldn't think so, but re-encoding exactly as you suggested above.

Oh, wait a sec... "Even in File I/O, try using legacyAVC"... where is this?

Conversion done, seems to be working fine now... whoohoo! Going to edit and see if all fine now... looks good so far!

Thanks again for your help guys!

excuse me.... looks like you are using Vegas Pro 16... while I currently experimenting in Vegas Pro 18... so the setting are different.

Conversion done, seems to be working fine now... whoohoo! Going to edit and see if all fine now... looks good so far!

Thanks again for your help guys!

ah ok - so what's the solution for you that works? Is it using audio MP3 instead of AAC?

Conversion done, seems to be working fine now... whoohoo! Going to edit and see if all fine now... looks good so far!

Thanks again for your help guys!

ah ok - so what's the solution for you that works? Is it using audio MP3 instead of AAC?

I think it was the opposite of that, previously I was using .mp3 for the audio, this time I used AAC as you suggested. :-)

Nothing of much importance, but I can't seem to find where to change my avatar... maybe it only shows after so many posts or after a certain period of time, as other sites seem to do?

Ah right... good to hear then. Well, AVC Video + MP3 Audio is a bad combination.

Ok - glad we found your issue, and happy editing!

Allow me to tag your previous reply as a solution