Video quality

Hi community

I have a question regarding video quality. I am working on a case where I have been filming several scenarios with actors. The recording equipment involved is a panasonic ag-hpx250j P2 camera which is very good. I have been taking these shots in full HD 1080i

After editing them in Avid composer they have been exported in full HD to Quicktmie. Then compressed with Sorenson Squeese with the 1080 youtube HD setting.

The films look very nice when I watch them with VLC. When I insert them into my project in  Articulate Storyline and publish them, they dont looks so good anymore.

All the publish settings for video and sound are maxed out in Storyline. Take a look here

Medical Ethics e-learning project

How can I get better looking videos in Storyline?

55 Replies
Alexandros Anoyatis

Ed Lee said:

Hi all!

I had a question about the swap in a published project between the compressed MP4 with a higher quality MP4. Obviously, the higher quality MP4 will take longer to load, however, after swapping out the files, the course stalls with the spinning wheel instead of progressively loading while the video is playing.

Is there any way to maintain the progressive loading process after swapping out the MP4 file?

Has there been any updates to SL lately that fixes this issue?

qt-faststart

More info can also be obtained here.

Hope this helps,
Alex

Phil Mayor

Alexandros Anoyatis said:

Ed Lee said:

Hi all!

I had a question about the swap in a published project between the compressed MP4 with a higher quality MP4. Obviously, the higher quality MP4 will take longer to load, however, after swapping out the files, the course stalls with the spinning wheel instead of progressively loading while the video is playing.

Is there any way to maintain the progressive loading process after swapping out the MP4 file?

Has there been any updates to SL lately that fixes this issue?


Well, when you serve videos on a site using plain HTTP – known as progressive download – the position of the header becomes very important. Either the header is placed in the beginning of the file or it’s placed in the end of the file. In case of the latter, you’ll have to download the whole thing before you can begin playback – because without the header, the player can’t start decoding.

Certain transcoding apps place the header in the end, so if your original MP4 container was transcoded with those, the header will be placed in the end and needs to be moved.

One of the tools that can be used to move the said headers is qt-faststart.

More info can also be obtained here.

Hope this helps,
Alex


+1

Daniel Nyakana

Hey Everyone, I was facing a similar issue with video compression. There is another way to get higher quality video outside of just exporting/publishing the video with all export settings on max.

The export video settings in presenter will probably get better with time but for now there is another way to get that crisp video we need.

Here is how: Use the video you wish to have in your course, and do a regular publish. Then there after open the published files folder, there is a folder inside the course called story_content or similar, it should contain all of the exported content, look for the videos that presenter compressed, take the original video and copy and paste it into the folder, now rename the video you just copied to the name that the presenter exporter automatically renamed your video when presenter exported it and compressed it, you need to do this because by this name the video files are referenced and are called to play in the presentation. So now if you run the course or refresh you will see the new crisp version of your video playing in your presentation. The thing to remember though is that the video should be compressed in such a way that you don't loose quality, yet the file size is not so large that it takes a long time to stream. Keep in mind who your audience is and what type of connection they are using to view the course and the time it might take to load.

Hope this helps, and if anyone needs help I can be reached at dnyakana@hotmail.com and I also build e learning courses, create storyboards, design and develop e-learning websites including lms to help delivery of courses, talented graphic designer, video & audio editor and much more. I can also be reached via skype at daniel.nyakana and would love to assist anyone with questions, or show you some of my work. 

 

P:S: after writing all this I just read Mikes solution :) 

 

Cheers, 

Daniel

Breanne Myers

Thank you for these ideas! I want to try this out but need a little clarification first.

We end up with 2 folders after publishing. The first is the folder you get automatically after publishing for LMS or web that contains the Storyline_Content. The second comes from choosing to get the zip version by clicking the button, "Zip" when the window pops up after publishing completes.

We upload the zipped version to our LMS (Trivantis' Course Mill). So, do I need to unzip this file, then go in and replace the mp4 video with the better video output that has not been touched by Storyline compression, then re-zip the folder? Do I need to compress the better video output with a 3rd party compression program before placing it into the unzipped folder, then re-zip the whole folder again? Do I even unzip the file in the first place, or just place the better video output and rename?

I appreciate any clarification as I don't have a lot of experience with dealing with the finickier points of file compression/behavior. Maybe someone has a good resource I could use to learn more?

(1. Unzip SL output folder>place better video output>rename better video output to match>delete SL compressed version of video> re-zip entire folder VS. 2. Unzip SL output folder>place compressed but hopefully superior video output>rename better video output to match>delete SL compressed version of video> re-zip entire folder VS. 3. Open zipped file (don't unzip)>place compressed but hopefully superior video output>rename better video output to match>delete SL compressed version of video)?