Why can xnview play back some webm files but not others?

Ask for help and post your question on how to use XnView Classic.

Moderators: XnTriq, xnview

Post Reply
Question
Posts: 11
Joined: Sat Feb 13, 2016 9:34 am

Why can xnview play back some webm files but not others?

Post by Question » Sat Feb 13, 2016 9:39 am

They are both based on VP8. The only thing that i could figure out was that converting a gif to webm via http://video.online-convert.com/convert-to-webm will not cause it to play back properly (you dont get to see the image, although the seek bar shows the animation playing). I have another webm that i downloaded from somewhere and xnview will play it just fine and can play back the sound.

Mediainfo shows that the one that works in xnview was created using "mkverge 6.1" and written using "libemi 1.3 and libmatroska 1.4" while the one that doesnt work in xnview was created using "lavf55.36.100". Both use WEBM VP8.

I know that xnview doesnt officially support webm files but why can it play some back just fine then? Im trying to find a low file size format to convert my .gif files to that will work in xnview.

I would post the two files but they are not considered worksafe, i can PM it to anyone if they want to do a comparison though.

Edit : Just tried converting a gif to webm using https://cloudconvert.com/gif-to-webm and it wont work in xnview either, i can see lots of white space, artifacts, and the image only starts to form in the last second of the playback.

Mixer
Posts: 166
Joined: Fri Aug 28, 2015 6:24 am

Re: Why can xnview play back some webm files but not others?

Post by Mixer » Sat Feb 13, 2016 9:53 am

What postpones you from converting some worksafe gif?

Question
Posts: 11
Joined: Sat Feb 13, 2016 9:34 am

Re: Why can xnview play back some webm files but not others?

Post by Question » Sat Feb 13, 2016 10:03 am

Okay i just picked a random gif from a video game and converted it to webm.

Lots of whitespace and artifacts : http://webm.host/8ae59/. It plays fine in firefox but not in xnview.

Question
Posts: 11
Joined: Sat Feb 13, 2016 9:34 am

Re: Why can xnview play back some webm files but not others?

Post by Question » Thu Feb 18, 2016 2:53 pm

Uh, anyone?

Question
Posts: 11
Joined: Sat Feb 13, 2016 9:34 am

Re: Why can xnview play back some webm files but not others?

Post by Question » Wed Feb 24, 2016 5:32 pm

Hello? Anyone here?

User avatar
oops66
XnThusiast
Posts: 1999
Joined: Tue Jul 17, 2007 1:17 am
Location: France

Re: Why can xnview play back some webm files but not others?

Post by oops66 » Wed Feb 24, 2016 6:22 pm

Question wrote:Hello? Anyone here?
... Maybe by trying an other way like here ???:
http://clubmate.fi/intervention-stop-an ... -to-video/
for example:

Code: Select all

ffmpeg -i your-test-gif.gif -c:v libvpx -crf 12 -b:v 500K output.webm
XnViewMP 0.82 Linux X64 - Ubuntu 16.04 LTS - X64

Question
Posts: 11
Joined: Sat Feb 13, 2016 9:34 am

Re: Why can xnview play back some webm files but not others?

Post by Question » Wed Aug 24, 2016 5:12 am

What has that got to do with the underlying issue of why xnview can play some webm files and not others?

Post Reply