What is the Camtasia Studio 8.03 maximum video size for mp4 files?

  • 2
  • Problem
  • Updated 7 years ago
Archived and Closed

This conversation is no longer open for comments or replies and is no longer visible to community members. The community moderator provided the following reason for archiving: Inactive threads; archiving to prevent necroposing

I have a camrec file that I can edit/save that is 12GB. But when I attempt to Render it as an .mp4 file > 4GB, Windows Media Player (WMP) will not load it. I "Rendered" the mp4 file numerious times varying the length of the camrec or the Video Bitrate. The only factor that seemed consistent was the ending filesize.

The error WMP gives is:
" Windows Media Player encountered a problem while playing the file"

Camtasia Output Filesize is a Function of:
1) source file sizes and
2) Quality (User choice) of the video (Video Bitrate)

During "Rendering", Camtasia creates a Temp file:
"TempMP4WithXMPInjection.mp4" It is created after the Rendering Video progress-bar reads 100%

At this point, if I copy/paste the 1st .mp4 file that was created in the Render-production folder (not the Temp file! - but the 1st .mp4 file), loads into WMP just fine - even if it is >12GB!

Also note that if I press the "Cancel" button during the Rendering process (just after the 1st .mp4 file is created) Camtasia 8.03 does not actually cancel but locks up! My only solution, then, is to force Camtasia down via Task Manager.

In short, Camtasia builds an mp4 file just after "100% complete" that will load into WMP even if it is > 12GB!. But after "TempMP4WithXMPInjection.mp4" is rebuilt into the "final" .mp4 (near the very end of the Rendering process), that "final" file will not load into WMP if > 4.1 GB

TIA Dennis
Photo of Dennis

Dennis

  • 10 Posts
  • 0 Reply Likes

Posted 7 years ago

  • 2
Photo of Robert R.

Robert R., Online Community Admin

  • 1614 Posts
  • 514 Reply Likes
Hello, Dennis;

My apologies for the delay in responding to your issue here, hopefully we'll be able to get this squared away pretty quick for you.

A few things come to mind when I see the information that you posted here and I would like to know, first, if you are able to play the Camtasia produced MP4 file (after the production completes, not the copied temp MP4) in a different media player (like VLC). The reason I ask is because Windows Media Player does, on occasion, have difficulties with playing MP4 media files (a quick search on Microsoft's TechNet will result in a large number of similarly-minded posts). What I'd like to do with testing a different media player is so we can first rule out that particular issue.

With regards to the max video size, it is a very difficult question to answer because with Camtasia Studio a large number of factors can come into play. First you'll have resolution, which impacts file-size and Camtasia's ability to adequately render the video. The second point that is taken into play is length of the video; the third being bitrate / audio encoding options, and the fourth, and generally the lowest on the hierarchy would be the edits that you have made to the project/video.

With your particular case I would like to know the capture resolution (as well as the editing and production resolution), the length of the video, as well as the audio settings for the recording and the bitrate (quality) that you are producing the video to. The reason I would like to know these is because a 12GB camrec file is fairly rare and may actually be the beginning of the issue that you are experiencing.

As a test, are you able to produce the file to an AVI or WMV file and have it work in Windows Media Player, or is it strictly limited to the MP4 file format?

For future reference (and more often than not, faster response times by our Technical Support team) it is recommended, for these more intricate and involved issues, that you submit a ticket directly with the Technical Support team by going to: http://techsmith.custhelp.com/app/ask . When you submit a question through that portal, a ticket number will be generated and a Support Specialist will contact you directly.

Again, thank you for contacting TechSmith Technical Support, and please feel free to contact me with any questions or concerns.

Kind Regards,
Robert R.
TechSmith Technical Support Specialist
Photo of Dennis

Dennis

  • 10 Posts
  • 0 Reply Likes
An mp4 was the only file format attempted.

As to the file size, I Produced/Rendered 15 min; 20 min; 25 min 30 min and 45 minute versions of the original 45 min video.

The aspect that should receive the focus is that, in every case above, the 1st mp4 file produced in the production folder (if that same mp4 file is copy/pasted to another folder before it is rebuilt) it works fine as an mp4 file whether 15 min; 20 min; 25 min 30 min and 45 minutes.

When the rendering process fully completes all file sizes none of which > 4.1GB loads properly into mp4 even though they did play fine before it was rebuilt.

In short, Camtasia converts the camrec into a working mp4 file up to 15GB (max that I tested)!!. It is when that same file is additionally processed by Camtasia and rebuilt by Camtasia that it fails to work as an mp4.

Therefore, there is an issue with Camtasia's rebuilding process, not with the size of the original camrec.
Photo of Robert R.

Robert R., Online Community Admin

  • 1614 Posts
  • 514 Reply Likes
Hello, Dennis;

The final steps in a production in Camtasia Studio are a matter of rearranging the XMP of the file (placing the MOOV atom in the beginning, as well as other playback information); when you are copying the temp .MP4 file, are you copying it when it is at / around 100% completion in the rendering process?

The primary reason that I am concerned about the size is that rarely do we see files larger than a few gigabytes at most go into Camtasia, so when I see a 12GB file I can't help being anything but concerned that the file-size may be disrupting the production process.

Additionally, are you able to go through and view the completed file (the 'final' file) in another media player, rather than in Windows Media Player?

Again, thank you for contacting TechSmith Technical Support, and please feel free to contact me with any questions or concerns.

Kind Regards,
Robert R.
TechSmith Technical Support Specialist
Photo of Dennis

Dennis

  • 10 Posts
  • 0 Reply Likes
Please re-read my 1st post speaks exactly to your question.

OK, I begin the copy within 10 seconds after the mp4 file appears in the production folder. (This occurs within a second after the progress bar = 100%)

The paste finishes before the 1st file gets deleted and then ultimately is replaced by the TempMP4WithXMPInjection.mp4 file.

Just watch the production folder in Windows Explorer as Camtasia renders the video.
Photo of Robert R.

Robert R., Online Community Admin

  • 1614 Posts
  • 514 Reply Likes
Hello, Dennis;

Thank you for the clarification; I am still leaning towards Windows Media Player having difficulties with some MP4 files, and am wondering if it is MOOV atom-related. Were you able to view the video in another video file?

As the issue seems to be a relatively complex and intricate issue that requires a bit more of a personal touch, I would like to ask you to fill out a ticket at: http://techsmith.custhelp.com/app/ask so we can assign a ticket number and begin working with you on a more personal level.

Again, thank you for contacting TechSmith Technical Support, and please feel free to contact me with any questions or concerns.

Kind Regards,
Robert R.
TechSmith Technical Support Specialist
Photo of Dennis

Dennis

  • 10 Posts
  • 0 Reply Likes
I'll do so. That said, if Techsmith has more than one doorway for their users to get support, then each doorway needs to be watched.
Photo of Kevin Mojek

Kevin Mojek, Employee

  • 584 Posts
  • 121 Reply Likes
I've looked into this a bit and it looks like the problem may be in a post-processing step where we add XMP data to the file (this is mainly for captions but there is some small amount of data that is added regardless of whether the project includes captions). So I think you are correct, we may have inadvertently introduced a maximum file size of around 4GB for MP4 produced output. I'll open a bug to get this looked at further for our next release.

As Robert had said, it's not every day that we see a 12GB camrec but maybe even less common is a produced MP4 larger than 4GB. Just curious as to what steps and/or production settings you're using to end up with such a large file?

Thanks for posting,
Kevin M
Photo of Michael Hsu

Michael Hsu

  • 2 Posts
  • 0 Reply Likes
Is there any update to this? I have the same problem rendering a 25 minute video. You might ask why is it > than 4.1 GB (8.6 actually). The reason is the video will then be transcoded for DVD output so maximum quality prior to that is preferred.
Photo of Kevin Mojek

Kevin Mojek, Employee

  • 584 Posts
  • 121 Reply Likes
We have a bug logged on it but don't have a fix available as of yet. If you're going to be transcoding to some other format and file size isn't a concern, you might try producing to AVI with the TSCC codec. TSCC is a lossless codec so that may in certain cases give you nicer looking results than MP4 with the bitrate cranked up to the maximum setting.
Photo of Dennis

Dennis

  • 10 Posts
  • 0 Reply Likes
I love progress! Thanks for keeping the item open.
Photo of Chris Reiche

Chris Reiche

  • 2 Posts
  • 0 Reply Likes
Has there been any progress on this bug? As a workaround, I am currently only exporting 720p video and at a lower bitrate to get my videos posted but my source video is 1080p and I would like to start posting 1080p videos.

Thanks,
Chris
Photo of Kevin Mojek

Kevin Mojek, Employee

  • 584 Posts
  • 121 Reply Likes
We were able to reproduce the problem with MP4s over 4GB and we are testing a fix that is intended for our next release, which will be a free upgrade for current CS 8 users. I can't say when exactly that update will be available at this point but I'll report back here when we are closer to the release date.

What are your production settings when you are seeing the problem with a 1080p video less than one hour? If you're producing to a specific bitrate, I would instead try quality mode with the quality set somewhere around 70-75% and see how that looks. If it is acceptable, that may allow you to produce to 1080p without waiting for an update.
Photo of Chris Reiche

Chris Reiche

  • 2 Posts
  • 0 Reply Likes
I've also started running into this bug rendering some 1080p Video clips on a 50 minute video.
Photo of Johan Swinnen

Johan Swinnen

  • 3 Posts
  • 0 Reply Likes
I also encounter many crashes when editing and rendering 1080P video (3 hour duration). The camrec file is 4.62 GB. Camtasia studio is only recognizing 2.8Gb out of it, although it seems to play it (and editable) to the end. However at the end many times it goes wrong (not always though) with a crash exit.
Also when rendering it most of the times goes wrong with a Crash Exit, towards the end of processing.
My system is running a 64Bit W7 and has 12GB ram and load of HD space.
I could use a camrec splitter, it that exist to split the input file in smaller sections. but i don't know if that exist (please TechSmith, send us those RND tools, i bet you have those.) Even better would be a fix (maybe by a 64Bit support) for these lager files. The fact that Camtasia does not clearly identify this larger files indicates that the support for these files is not correct. thanks for fixing this soon.
Photo of Dave O'Rourke

Dave O'Rourke, Senior Software Engineer

  • 1444 Posts
  • 419 Reply Likes
There is no known limit on the size of the CAMREC files. It's impossible to tell what is causing the crash without more information. The best way for us to help you is for you to visit http://support.techsmith.com and submit your question there. Someone from our TechSupport staff will follow up with you by email to help you troubleshoot the problem further.
Photo of Johan Swinnen

Johan Swinnen

  • 3 Posts
  • 0 Reply Likes
See item 130314-000054 in your support techsmith website
Photo of Johan Swinnen

Johan Swinnen

  • 3 Posts
  • 0 Reply Likes
The Recorder is a simplistic tool, simply recording until one of two things happen, either you press the stop button or the application crashes; I have seen some powerful computers, while your machine is powerful, I have seen some far more powerful machines record 12-13GB
files, never to be able to open them in Camtasia and that is because these machines have the necessary RAM to go through and cycle the Recorder enough that it never runs out of RAM. The average Camtasia user has 3GB of RAM and records the screen for 15 to 20 minutes, resulting in files well under the 1GB mark. Because of these demographics we have tailored previous iterations of the applications to those specifications; in truth we recommend recording resolutions of 1280x720 for videos of roughly 30 to 45
minutes at maximum; having a 4 GB+ recording file leaves me to assume you are capturing greater resolutions for far longer (and possibly at different audio settings than standard). While the Recorder can handle that, since it is a simple tool, the Studio is not able to access enough memory to work on the files (due to its 32-bit architecture).

Again, thank you for contacting TechSmith Technical Support.

Kind Regards,
Robert R.
Technical Support Specialist

This conversation is no longer open for comments or replies.