Progressive download markers missing from divided mp4s

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  • Updated 7 years ago
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Hi,

Just noticed that all of the mp4s produced in divided file structure, apart from the first one, do not progressively download, i.e. they only start when the whole file is locally cached.

Please fix this! The qt-faststart workaround solves it, but it is time consuming and shouldn't be necessary.

Cheers,
Li
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Lionel

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  • ngeh

Posted 7 years ago

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Lionel

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Hey Techsmiths,

Just wondering if you can confirm this is an issue with Camtasia 8 currently. If I am actually doing something wrong it'd be great to know too.

-Li
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kayakman, Champion

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When I produce [in CS8] a flash with multiple files from markers, all the files seem to start play after a short download start pause, and play while rest of each file downloads progressively

If each segment file is short [1 min], and viewed off high speed internet, or local PC, the progressive download usually finishes shortly after play starts anyway

I usually set video to pause at start, but that only affects the 1st multi file in production
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Lionel

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Yeah, I get that, but for my purposes I need video that average about 15 minutes each segment.

Basically, when using mp4s straight from Camtasia 8 and imported to Articulate Presenter, there is significant delay in video to start playing off a web server. This is the case for all video files except the first one.

But, as soon as I apply qt-faststart.exe to all video files (and it cannot be applied to the first, presumably because all the markers are there already), this long delay disappears.

Clearly this indicates Camtasia 8 marks the subsequent mp4s differently to the first, and it is having an adverse effect.
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Andrew

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I'm having the same issue. I've produced an .mp4 video that's 7 minutes long and contains two video files and is close to 200mb in size. I need to upload to our LMS and it's taking forever to play because the file is not set to progressively download.

I'm eagerly waiting on a response from the Techsmith people to see if they can fix this.

So far I'm currenly waiting for the same video to get produced in a .wmv format because my LMS will automatically convert it to progressively download although their video compression might dramatically reduce my quality which I'm concerned about.
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Lionel

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Still no word?

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