Role model appears stretched

I'm sorry, my English is not good, as in figure, the problem, I have a case that has been baked into action, but there is such a problem, I do not know whether vertex causes too much, or else. I hope you can help me solve it, thanks again

Reply to post of user zhangchuanjia

I'm sorry, my English is not good, as in figure, the problem, I have a case that has been baked into action, but there is such a problem, I do not know whether vertex causes too much, or else. I hope you can help me solve it, thanks again

Hi!
This can be caused by several reasons.
1) Some of the vertices in the model use to many bones for skinning. Blend4Web supports only 4 bones per vertex.
2) Armature object has an animation which uses IK or some other complex constraint. If this is the case - you need to bake it.

Reply to post of user Evgeny Rodygin
Hi!
This can be caused by several reasons.
1) Some of the vertices in the model uses to many bones for skinning. Blend4Web supports only 4 bones per vertex.
2) Armature object has an animation which uses IK or some other complex constraint. If this is the case - you need to bake it.

Thank you, I'll give it a try