@avvidya931 how are you copying the video URL? Are you using some custom export of all video URLs or OOTB copy URL feature in AEM?Have you tried copying the URL directly from Scene7/Dynamic Media? Does that help meet your requirement? Please post your findings. 

@Manpreetkaur908 The error talks about a failed scriptHave you customized the lightbox or this is OOTB lightboxassetcount.jsp?Can you check any gaps in code to understand why the file BundledScriptServlet.java, line 82 is not working as expected? 

@aemdev05  For error like "java.net.UnknownHostException: [hostname]"The reason is your hostname is not in /etc/hosts, The solution is simple:sudo vim /etc/hostschange the line looks like:127.0.0.1 localhostto:127.0.0.1 [hostname] localhostSave and exit. Post your findings later. 

I would recommend opening a daycare ticket, since you have a tight deadline. They should be able to check the instance, logs and identify the exact issue.

you have to specify "cq:conf" property. Example: <jcr:content cq:conf="/conf/tenant1" jcr:primaryType="nt:unstructured" jcr:title="Video Fragments"/>

@10024  Please checkout these help docs once: https://experienceleague.adobe.com/docs/experience-manager-cloud-service/implementing/developing/configurations.html?lang=en https://experienceleague.adobe.com/docs/experience-manager-core-components/using/developing/context-aware-configs.html?lang=en 

Workflows are stored differently in AEM 6.5. Can you please make sure all the workflows are available in below paths:/conf/global/settings/workflow/models/etc/workflow/modelsIf not, please create a package from 6.3 instance, upload the package to 6.5, restart the instance once and try running the wo...

@asn_india You can try leveraging third party tools like MoveIT to schedule file pull-push mechanism to-from AEM DAM. You can supply a regex to run scheduled jobs every 10mins to fulfil this requirement.For point no. 2, You need to migrate the delta assets to cloud env and inform authors about the c...

@kotireddy4b1 the first error indicates you have selected too many assets in your collection. Can you please try selecting 10 assets, create a test collection and then initiate the workflow again?AEM OOTB allows to run a workflow on max 15 assets. Please share your findings afterwards. 

@sigmonky I would suggest posting this question in Sites community, rather than Assets. You will get a faster response there: https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/ct-p/adobe-experience-manager-community