[BugFix] update eb5 video chunk

[TBD1]

Motivation

修复video chunk逻辑，图片请求会跳过video切chunk的过程。（video chunk临时方案）

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

---

K11OntheBoat seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[paddle-bot]

Thanks for your contribution!