bilibili_notes | 攻城狮之家B站课程课件合集，2号仓库地址https | Video Sharing library
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Trending Discussions on Video Sharing
QUESTION
I have a video sharing app, and when you save a video to firebase storage it works perfectly for videos that are roughly 1 minute or shorter.
The problem that I am having, is when I try to post a longer video (1 min or greater) it never saves to firebase.
The only thing that I can think of is this error that I am getting, and this error only shows up about 30 seconds after I click the save button:
[BackgroundTask] Background Task 101 ("GTMSessionFetcher-firebasestorage.googleapis.com"), was created over 30 seconds ago. In applications running in the background, this creates a risk of termination. Remember to call UIApplication.endBackgroundTask(_:) for your task in a timely manner to avoid this.
Here is my code to save the video to firebase.
...ANSWER
Answered 2021-Dec-27 at 06:04Finally figured this out after a long time...
All you have to do is use .putFile("FileURL") instead of .putdata("Data"). Firebase documentation says you should use putFile() instead of putData() when uploading large files.
But the hard part is for some reason you can't directly upload the movie URL that you get from the didFinishPickingMediaWithInfo function and firebase will just give you an error. So what I did instead was get the data of the movie, save the movie data to a path in the file manager, and use the file manager path URL to upload directly to firebase which worked for me.
QUESTION
I'm developing a commercial software that is not open source. It will use FFmpeg to export videos. The libx264 codec doesn't appear to be an option for me since I can only use LGPL for legal reasons. What is the best LGPL alternative to libx264? I'd like a codec that makes a good compromise between quality and file size as well as being supported by the majority of video players and video sharing sites such as YouTube. If I have to choose between lower quality and larger file size then I'd go with larger file size since videos can always be transcoded using other software if needed, but lossless formats such as Lagarith are still too large.
I see that libopenh264 may be an option, but is it supported by most players and video sharing websites? How does it compare to libx264 and is it LGPL?
...ANSWER
Answered 2021-May-11 at 14:05Consumers (players, platforms...) don't support encoders, they support codecs. And x264 and openh264 both encode H.264/AVC codec streams. You should be fine, technically, with libopenh264.
QUESTION
So, I have this is in my CSV file:
...ANSWER
Answered 2021-Feb-08 at 06:06you should use append mode('a') instead of write mode('w')
QUESTION
So I've hosted a video sharing website and right now I have approximately 2 million rows stored in an AWS RDS db.t2.large. The pricing for this instance is $0.136/hr. However it is very slow because it only has 2 CPU's. The cost to get an instance with 8 CPUs is $0.544/hr which is well over my budget. I am running the statement "SELECT * FROM videos ORDER BY RAND() LIMIT 100" on almost every page and it is too slow with only 2 CPU's. With 8 CPU's it is bearable. How do I make this faster? I don't want users waiting a long time every on refresh or new link. The number of rows is expected to grow 8 million rows when i complete the data dump.
ANSWER
Answered 2020-Nov-08 at 17:11Is it perhaps enough to just select randomly from within a date range, or from videos that have a certain amount of views? What database are you on? See e.g. MYSQL: Query order by rand() very slow
Another approach is to cache the randomized values. You can do it in a way that looks completely random to each user:
user A requests random sample => store sample in cache, and mark it as having been retrieved by A
user B requests random sample => get random sample from cache, checking whether we have retrieved it before (we haven't, it was A, so return it)
user A requests random sample => get random sample from cache, checking whether we have retrieved it before (we have, it was us, so we do another request and add it to the cache and then return it)
This makes the request of B "free", so instead of 3 requests we only have 2.
QUESTION
I am planning to start a small photo/video sharing app that self-destruct after a while (like Snapchat) using Firebase.
The question is: Since Firebase has storage limitations and charges surplus for certain things, is it possible to use a cron job to delete expired files and save space? Or will I be charged anyway?
Thanks in advance, I'm a beginner.
...ANSWER
Answered 2020-Oct-02 at 18:59You will only be charged for files that are being stored in your Storage bucket. So if you remove files, you will no longer be charged for the space those files took going forward. Cleaning up unneeded data is a great way to reduce the cost of your solution.
It seems you can set an auto-delete policy on your Cloud Storage bucket through its object lifecycle management feature, but I'll admit I've never used that myself.
When I've needed to periodically clean up, I've run a scheduled Cloud Function that then used the Firebase Admin SDK to remove the outdated files.
QUESTION
I first tried:
...ANSWER
Answered 2020-Jul-24 at 17:51Problems with your command #2:
- Frame rate is too low. Most players are unable to play 1 fps. Use 10 fps or higher for output, or set input
-framerateto 10 fps or higher. - Chroma subsampling. Most players can only play 4:2:0, so use the format filter to force it to 4:2:0.
- MP3 in MP4. Some players are unable to play MP3 in MP4. For highest compatibility use AAC.
ffmpegwill choose AAC by default for MP4. - Faststart (optional). Add
-movflags +faststartso MP4 can begin playback faster.
Command:
QUESTION
I am trying to make something like an image/video sharing application with flutter and firebase.
User registration and authentication with firebase_auth File upload with firebase_storage Saving data in cloud_firestore, etc.← Now here
I'm looking at, but I'm working with them, for example,
Link the user information (user id) and the uploaded file, I want to know who uploaded each file, What should i do?
If I could do that, I can search files by user id, I give points to each user according to the number of file uploads I think you can do something like this.
Do I need to use firestore or something for that?
...ANSWER
Answered 2020-Jul-03 at 05:41I believe that a good approach to do this is create a collection for videos and for images in Firestore Database, or even a generic collection called media, where each document has the info about the uploaded media, such as type (video/image), the file's url from Firebase Storage, user's id and the upload's date. You can create a model like this, by example:
QUESTION
So I have a video sharing website, written in PHP. Now when a share a link, it will just show the link. But I want it to have a embed video part below the link. Here's the screenshot of what I mean.
Is there any way to implement it? Thank you :)
...ANSWER
Answered 2020-Jun-23 at 06:20If you want to share it as like sharing a youtube video link with preview thumbnails then may be this helps you. I think you need to use the og tag which helps you to preview a link while sending on social media as thumbnails. if you mean that you use it.
create og tag and placed it in meta tag in head section like this:
QUESTION
I am using the agora.io Flutter (agora_rtc_engine: 1.0.5) for a cross-platform application. In the info.plist the io.flutter.embedded_views_preview is set to Yes as the documentation specifies.
My test application currently has only a main screen and the example Agora flutter video sharing example provided on Github in the quick start https://github.com/AgoraIO-Community/Agora-Flutter-Quickstart.
When I packaged the app and submitted it to the Apple App Store it is rejected because of the privacy permissions. The rejection states that the following privacy notices are not set:
- NSContactsUsageDescription
- NSCalendarsUsageDescription
- NSAppleMusicUsageDescription
- NSMotionUsageDescription
- NSSpeechRecognitionUsageDescription
- Missing Push Notification Entitlement
- NSLocationAlwaysUsageDescription
- NSLocationWhenInUseUsageDescription
There is no code in the flutter application that touches any of these areas.
Is this a result of setting the io.flutter.embedded_views_preview to be true?
Is this expected or is there something that I am missing that is causing this?
...ANSWER
Answered 2020-Jun-17 at 21:56It looks like that you're adding user permissions for stuff that your app might not need.
This is something that you can do to prevent this:
- Don't hardcode any permission in the plist/manifest
- And to not have asserts in the package that make the compiler fail when you don't have the permissions for a feature you aren't even using.
- If you're using permission_handler plugin as used in Agora's quickstart guide then you will have to probably mention all the permissions that you wont be using in your Podfile. You can refer the below link on how to do that: https://github.com/flutter/flutter/issues/21941#issuecomment-576121308
QUESTION
I am building a video sharing app with ionic. I want when users wants to upload videos and it will give them a preview where they can trim the video, now I found the Cordova plugin that can do it, but I don't knowhow to use it Here is the plugin
cordova-plugin-video-trim from https://www.npmjs.com/package/cordova-plugin-video-trim
Now please, how can I use this plugin in my ionic application
...ANSWER
Answered 2020-Jun-04 at 01:44Go to the project root and run these commands:
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