OpenShot Video Editor

AVCHD Import Here then Gone again

Asked by Todd Howe

Hello OpenShot;

I'm hoping you can help me as I bought a nice high-end Ubuntu box to do HD video editing on, and am having difficulty getting things to work. It's been a month now and no luck.

To make a long story short, I have a 6-core AMD and an ATI 5850. If the drivers for VA-API are relevant at all to this discussion, you should know I've installed the important ones from http://www.splitted-desktop.com/~gbeauchesne/ eg; libva, xvba-video, gstreamer-vaapi. This didn't seem to work, but the other day (some time had passed since the driver installs) I noticed h.264 video had started working in mplayer, which before had played only audio. So I loaded up Openshot to see if it would work.

On that occasion, it did work - AVCHD.mts clips previewed and played. However, I couldn't move the clips around on the track editing interface - they would disappear and stubbornly cover other tracks.

On a seperate occasion a couple of hours later, previewing had *stopped* working and I could hear only audio - but movign clips on the track editing interface now worked fine!

Does this sound like something you may know a fix for?

And if I have to say get rid of this video card, what's one with the juice to edit HD video properly that works well with your application?

Thanks for your time
Todd

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Jonathan Thomas (jonoomph) said : 		#1

Todd, I am not familiar with any bugs related to h.264 working and then not working again. Also, I do not think that is related the problem with moving the clips on the timeline. When moving clips on the timeline, no video functions are being used. So, there are probably 2 different issues happening here. A new version of OpenShot is coming out soon, which will likely fix the issues with moving clips around.

Also, multi-core systems do not really work great with OpenShot, Kdenlive, or MLT (the video editing framework both applications use). Most of the work is done on a single CPU, and uses FFmpeg for the encoding / decoding. This will likely improve in the future, but as of now, it does not work. To get the best performance from OpenShot, be sure you have fast CPUs, rather than lots of CPUs. And plenty of memory. The video card is not being used for encoding or decoding, so that should not matter.

Please take a look at the following FAQ, and be sure you have the correct version of libavformat installed:
https://answers.launchpad.net/openshot/+faq/1040

Good luck!

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