I've moved this to the InDesign EPUB forum.
What format did you use for the video? Did you choose any settings in the Media panel? Which EPUB format did you export—EPUB2 or EPUB3? What EPUB viewer were you using? (Do you realize that Adobe Digital Editions doesn't preview video?)
Thanks for replying.
1) The video I placed was in mp4 format.
2) On Media panel, I checked Option: "Play on Page Load" ,
Poster: "From Current Frame" ,
"Show Controller on Rollover"
It worked fine on preview mode.
Now that I know Adobe Digital Edition doesn't preview video, and when I exported as interactive PDF format, the video frame cannot be clicked or played.
3) I was trying to export as EPUB3 and interactive PDF format
4) I was using Adobe Digital Editions and I did not know it doesn't preview video.
Here are my 2cents...
I would take your exported epub and try loading it onto an iPad and see if you can see the video there.
I've read in the forums that ADE will not play videos just yet since it's not epub 3.0 compatible.
@ricksecc is correct. Don't preview on ADE. It doesn't fully support EPUB 3. Try iBooks on Mavericks or iBooks, or Readium on a Chrome browser