Private Cloud: A brief introduction and why we need it

By now we have gained reputation from various types of clients, including education, K-12, clinical medicine, financial, real estate and transportation, serving tens of millions of audiences daily.

While most businesses and enterprises are satisfied with our typical video hosting and live streaming service based on general shared cloud computing, some large-scale enterprises have asked for building cloud video service on their own cloud network (or at least, their server groups), with almost the same functionalities in POLYV’s Video Cloud and Streaming Cloud.

That’s why we raise the idea of Private Cloud – deploy POLYV’s service on a private or internal network.

Usually when we use Video Cloud or Streaming Cloud, the data is stored in the servers of CDNs that not just serve POLYV. Generally speaking, the data in the shared CDNs is safe and stable enough, and the CDN service providers can resist common cyber-attacks (such as DDoS) or technical issues. What’s more, the cost of deploying the service on shared CDNs is less – from the leasing of CDN to the human resources to maintain the service – and is flexible to expand or contract the scale if needed.

Yet, there are some large enterprises requiring a higher level of security, demanding that the data should be stored within the network of their own server, or using specific CDNs that are fully owned or leased to the user and not shared with other users. And for the functionalities, they should be the same as the general video cloud services.

Hence we have the idea of Private Cloud – we can deploy Video Cloud or Streaming Cloud within their internal network, or on the CDN network that are designated only for the enterprises. They can either hire operation engineers, or apply one-on-one technical assistance from our VIP service.

And since the data is now stored in the private network, it is even more secure than in the shared network, taking the private version of Video Cloud and Streaming Cloud service to a new level, and no fear of leaking the data of employees or confidential papers.

That’s all for the brief introduction of our Private Cloud. If you are interested in this service, feel free to contact our customer service for more information, or check out our official website for more information.

POLYV Streaming Cloud Update (July 2017)

Hi everyone! Here we are thrilled to announce the latest features and updates of Streaming Cloud. Let’s get started!


1. Optimizations for Question & Inquiry function. We released the Question & Inquiry function in the 1st half of 2017, and received many feedback from our users and developers. And now, we’ve made this function more useful with the optimizations listed as following –

(1) Adding “Question & Inquiry” menu category in mobile interface;

(2) After adding a new question session and saving it, the audience can submit their questions and inquiries from different devices including PC, smartphones and tablets;

(3) The “Question & Inquiry” session will be closed immediately once you remove it.

2. Viewer registration update. We’ve added “Name” as a type of registration field, and now you can use it to register and authorize the audience along with the field.

What’s more, the names registered by the audience can be used for their nickname in the live chatroom.

3. Interface optimizations and other minor bug fixes.

The latest update of Streaming Cloud is now on. You can check out our develop center for detailed information, or troubleshoot the problems you encounter while testing the latest version of Streaming Cloud. And if you don’t have a Streaming Cloud account, visit first to sign up yours.

We will notify you if there’s any major updates for our services or clients, so stay tuned and see you soon!

Questions from You: How to troubleshoot the issues of my live streaming?


I’m now using Streaming Cloud for long, and it’s been working well. But recently my livestreams are getting sluggish and buffer a lot, and my audience often report about the lagging and poor watching experience. What can I do to troubleshoot the issue?


Honestly saying, our technical support team has received different types of complaints about the lagging or buffering during live streaming. Since the cause of lagging varies, we have to find out the right way to solve the issue.

We usually judge if the lagging is temporary or lasts longer first. If the lagging is temporary, it is more likely caused by the network condition – either by the network you use for pushing the livestream, or by the network of your audience.

At this situation, you need to check the network connection, and see if the issue is on your network device, your ISP (Internet Service Provider) or something else. We will not discuss this in detail since the possible cause varies.

If the lagging lasts long (like for tens of seconds or keeps lagging since your livestream started), you have to determine if the issue is caused by the Push side (who start the livestream and upload the streaming data) or the Pull side (who receive the livestream and download the streaming data).

You can check the livestream by the following steps –

1. Find out how many of the audience (Pull side) that encounter lagging.

2. If not all audience encounter lagging, that means the network condition of these audience is not good, and is required for further inspection.

3. If all audience encounter lagging, that means the streaming source from the livestream host (Push side) is not set properly. This can be caused by one of the following problems –

(1) The network condition of the Push side. Since it directly affects the transmission of the livestream, we recommend you check this first. And if it is the problem, you should fix it immediately.

(2) The firewall settings. Sometimes the livestream gets affected by the firewall settings of your operation system, which may block the live streaming client from transmitting the streaming data. You can add the live streaming client to the application white list to make it gain access needed for your livestream.

(3) The settings for the livestream. Sometimes improper parameters cause the lagging, such as using streaming bitrate that is too high for the network, or enabling too much features that the network is unable to process in time (especially the interactive functions in a jammed network). For this situation, you can try disabling some of them to see if the lagging issue is solved.

4. If you can’t find any problem with the inspections in Step 3, and you are using our live streaming client (PC/iOS/Android), you can submit the log file to our technical support to diagnose and pinpoint the issue.

If you are using OBS or other streaming client, you can try to find the log file if there is one, and submit to our technical support with the streaming client you use and its version if available, as errors may occur in some versions of the third-party streaming clients.

Besides, our technical support will contact the provider of our CDN, to see if there are anomalies appearing during the time of the livestream, and will have further contact to solve them.

OK, that’s a wrap for this Q&A session. It may take some time to find out the cause of lagging, but this process can help you understand live streaming better and adjust the settings for better livestreams. And of course, we strongly recommend you giving a test or rehearsal before starting the livestream to fix the problems early.

Or, if you want to learn more about troubleshooting the issues during livestream beforehand, check out the develop center for manuals or detailed information. And if you encounter any problems during testing or livestream, feel free to contact our technical support in time. We are always here to listen.

Hope you like this article and find it useful. We’ll see you soon!

Highlights from POLYV Video Geek Seminar Guangzhou

Held by POLYV, Video Geek Seminar is a monthly seminar that mainly focus on the industry of video and other industries that are related to video, or the crossovers of both sides.

The previous 5 Video Geek Seminars were held in Beijing. This time, we had the seminar moved to Betaspace, Guangzhou, to meet new audience and learn more about the needs from potential clients.

The audience of Video Geek Seminar

The theme of this seminar is “Technical innovation for online education”. Shibiao Lv from China Net Center, Johnson Zhou from POLYV, and Xiang Lan from Xingshuai Education gave their lecture about the change and transition of traditional education, as well as innovation of online education, with their different perspectives and thoughts.

Shibiao Lv: How video technology drives online education

A veteran on media streaming and video architecture, Mr. Lv talked about the evolution of video technology, the combination of video and online education and how video support the industry. Also, he shared his thoughts and opinions about the technological innovation on this industry.

Mr. Shibiao Lv lecturing on video technology

Mr. Shibiao Lv lecturing on video technology

In his opinion, “The technology of video has changed significantly over the last two decades, the application of video or how we use it doesn’t change much. It just follows the trend, like VOD, live streaming, VR and AR.”

Johnson Zhou: Video application for online education

Started his career as technical support in Baidu, Senior Director Zhou demonstrated examples of POLYV’s clients, and showed practical acts of how to gain potential students and engagement between students and lecturers with the help of POLYV’s service and components.

Mr. Johnson Zhou in his speech about marketing with videos

Mr. Johnson Zhou in his speech about marketing with videos

He stated, “Compared to logistics, the industry of education is more suitable to go online, as knowledge should be spread beyond the boundaries of time and space.”

Xiang Lan: Video application for online education

With over 7 years of product and operation, Mr. Lan showed the audience the key points of running a service to the best, including the content, the service platform and operation procedures.

Mr. Xiang Lan talking about the innovation of video technologies

Mr. Xiang Lan talking about the innovation of video technologies

“Every little step of innovation and improvement counts,” He says, “The key for Xingshuai’s success is to produce excellent content, high efficiency and take the service to the next level.”

Round Table session & Conclusion

In the Round Table session, Lv, Zhou and Lan discussed about phenomena and current trend of video technology and the issues encountered in the online education industry.

Round Table session

Round Table session

They also answered questions from the audience, from their actual experience of gaining students, their different perspectives on online education to the extent of the lectures they had made.

With the ideas and opinions shared by the lecturers and the audience, everyone had new conceptions on the video technologies, the industry of online educations and how to operate a product/service with higher efficiency and effectiveness.

And last but not least, we would like you to participate in our next Video Geek Seminar, in the afternoon of July 8th (Saturday) in Beijing. You can click here for detail if you’re interested.

Concise tutorial: Batch video migration to Video Cloud

We have lots of users who choose Video Cloud as their first video service. Besides, we have some users who previously using free or other paid video hosting service, and need to migrate the old videos to Video Cloud. Some of them may have up to thousands of videos and take up to hundreds of gigabytes.

It sounds like a mission impossible to migrate these videos one by one, if using the old methods. But don’t worry! POLYV provides a much simpler way to migrate your videos to Video Cloud, with just a few steps.

1. Generate a CSV (Comma Separated Values) file for migration. The CSV file contains multiple lines of your file, and each line consists of two elements – the origin URL and the title of the video, separated by comma.

You can either use text editing applications (like Notepad, Editplus, UltraEdit, Atom, etc.) or spreadsheets processing applications (like Microsoft Excel, Apple Numbers, Google Sheets, etc.) to do the job.

Using Notepad for editing the CSV file

Using Notepad for editing the CSV file

Using Excel to generate the CSV file

Using Excel to generate the CSV file

Note that the CSV file should be saved using UTF-8 encoding, especially when it contains CJK characters. If not, the file will not be recognized and processed.

The CSV file should be using UTF-8 encoding

The CSV file should be using UTF-8 encoding

2. Sign in your POLYV account, then select “Videos” to enter the admin page of Video Cloud.

3. Click “Video sync” on the left panel, then click the blue “Import task” button.

Click the “Import task” button to select the designated CSV file

4. In the popup window, choose the destination category in the dropdown list, then click the blue “Upload CSV file” button to submit the CSV file prepared in Step 1. After that, click the “Save” button.

Select the destination category first before importing the CSV file

5. Now Video Cloud will automatically process the file. All you need is to do the waiting game…

And when it is finished, click the “Export to CSV” button to save the result.

The result of the batch migration, showing numbers of successful and failed number of videos and time used

If you open the CSV file, you can see each line contains the URL, the title and the VID (Video ID) of the video, with the datetime of completing the process following.

The detailed information of the batch migration

So that’s a wrap for how to batch migrating your video to Video Cloud. Now with this feature, you don’t need to worry about migrating your existed videos to our system, because we will take good care of them and keep them unharmed.

If you to know more about the features of Video Cloud and Streaming Cloud, check out our blog or visit our official website for more information. Happy video hosting!

Service Announcement for Dragon Boat Festival (Duanwu) Holiday 2017

Greetings! As Dragon Boat Festival (also known as Duanwu) holiday is coming, some of our customer services will be altered during the holiday. Here are the detailed information for our service during the Dragon Boat Festival holiday.

1. Our office will be available on May 27th (Saturday) as usual time, then closed from May 28th (Sunday) through May 30th (Tuesday), and will be back into service on May 31st (Wednesday).

2. Invoice and document delivery will not be available during the holiday.

3. Online support and customer service will still be available during the holiday. If you have any issues on our service and need help, you can send e-mail (, contact via our hotline (+86 400-158-8816) or Business QQ (800009268) for one-on-one aid, or look through our FAQs in our Developer Center in case the answer is there.

We apologize for the delays during the holiday. Thank you for your patience and enjoy your holiday.

Cordially from your POLYV Support & Customer Service Team.

[POLYV Insight] Some thoughts on Qianliao Scandal

Earlier this week, our office was shocked by the following news –

Lycheer (literally Lychee WeChat Course, accused Qianliao ( of hacking and attacking their WeChat live streaming classroom service several times between October 2016 and May 2017.

Reports say Qianliao trashed Lycheer with porn media or rebellious videos on forbidden political issues, as well as hiring trolls and “zombie users” to flag the service, causing students affected by the inappropriate content or service interruption, and WeChat to block the domain of for 7 days due to the misguiding by the false flags.

Lycheer have provided the data and evidence during the period of hack and attack to Guangzhou Police for investigation. GZP charges Qianliao for breaching production and business operation, and one individual is in detention.

Source: Jiemodui, Weibo

Lycheer accused Qianliao of hacking and attacking their WeChat live streaming classroom service

Qianliao is one of our competitors in the domestic market, and is one of the biggest live streaming services with millions of users here as it proclaims itself “a free platform for open classes and interviews”.

What really shocks us is that Qianliao would beat competitors in such ways that against laws. They only think about poaching tutors from the competitors, but never think about the consequences that brought to the lecturers and students.

These acts actually do significant harm to the tutors who provide useful courses that help us think and practice, as well as the innocent students who just want to learn practical skills through Lychee WeChat Course. As reputation is important in the online education industry, what Qianliao did does not promote any benefits to the tutors and students – which are also their potential users, but in fact damaging their own reputation and setting up a bad example for them instead.

What’s more, if these “hack and attack” acts continue, every other fellow platforms will ultimately get involved, and takes a lot of time to recover from the financial loss and the damage of reputation – and more importantly, the time of tutors and students, which are invaluable.

We never promote being evil in the competition, as it only brings lose-lose situations for both sides. We believe that by providing good services, keeping listening to the users and using proper ways of marketing and promotion, can we gain true growth for ourselves as well as the industry.

After all, the Qianliao Scandal brings us an alarm of unfair competition, and reminds us how important the users and product are to us. We hope there will be a just judgment for this case, and the affected users of Lycheer are going back on their track of learning and inspirations.