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Re: Disappearing video clips

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George Dean
Re: Disappearing video clips
on May 21, 2019 at 2:45:14 pm

We often talk in containers/wrappers as in .mov and .mp4 and that can be confusing because processing problems within Vegas Pro are not specific to the container/wrapper, rather what codec was used to compress and store the video/audio within the container/wrapper. We should be talking about the contents as in h.264, x264, h.265, MPEG-2. MPEG-4, MJPEG, ProRes, DNx, etc.

Often, however the user is not clear what that codec is and it is easier to refer to it by it's container such as .mov. And sometimes it's not even the codec, rather how the source handles it's own home spun version of the codec.

With that said, we do know that Vegas Pro will not natively handle all flavors of the contents of .mov files, not even version 16, and needs Quicktime to ingest some of those problematic files. We also know that Quicktime in Windows is 32 bit and no longer supported by Apple, and that presents another issue when it needs to be used, as Vegas Pro will only handle a certain limit of those files before strange things happen.

One example......when testing source media from a Canon 5D Mark III, every user who tested including myself, found that 40 clips in the timeline was the limit. Place 41 and Vegas Pro will not view the files, and may actually lock up and/or crash, confirming this problem that 'Peter-Pappas' (user at Vegas Creative Forums) brought up. These were MJPEG in an .mov container (and reported here: As yet, Magix has not addressed this is Vegas Pro.

If the .mov file contains ProRes it can be ingested with Vegas Pro 15/16 natively without Quicktime so there is no file quantity limit. Some other source media files with the .mov container can be ingested successfully by all versions of Vegas Pro without problems or support from the 32 bit Quicktime. These types really don't require the q7plug.dll and are just wrapped in .mov.

There are also some files that have the .mp4 wrapper that present problems to Vegas latest versions because when loaded they invoke the so4compoundplug.dll and Vegas chokes on them. In that case simply disabling the so4compoundplug will fix the issue, and by doing so Vegas will reverts back to using the old compoundplug.dll. These are certain flavors of AVC or XAVCS type files. See this thread: . But if you have files from a Panasonic GH5, which needs the so4compoundplug.dll you may be forced to convert/transcode one or the other files so they can both be used in the same project!

If anyone is confused yet welcome to the club, I'm a member also!!! Often the simplest work around is to transcode/convert the problematic source media to something like h.264 or Cineform intermediates and get on with their project. Others simply change cameras, but for those working with clients, they are going to have to find a reasonable work around to use the client material.

Also, I should probably add that source media with variable frame rate has always been nasty for NLE's to handle, as they like constant frame rate. These type files can be in the .mp4 and/or .mov containers using any codec that supports variable frame rate compression, like h.264. In this case, Vegas Pro 16 (build 464 or later) is better at processing than previous versions, but some of these files (and depending on how many and what effects are applied) can even cause problems with VP16. These are often from a screen capture program and smart phone source.

Hope some of this may be of help to others and like always, if I have anything twisted or incorrect, please reply and I will correct any errors.

Many or perhaps most Vegas Pro users don't have any problems ingesting their source media simply because they are using files which don't have these problems.

Best Regards......George

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