Hey guys, I'm looking into creating an application that requires a video file taken on the mobile phone, open it and allow the user to cut the video using two sliders, one for IN(the beginning) and the other for out(end of the clip you want), this will then create a new file and my app will use it then.
Does this sound feasible? Where should I start looking in order to do this quite simple concept? Does anyone have any ideas?
Thanks
Android SDK has no video-editing (not even cropping) capabilities. So you'd need to write your own.
To do this you'd need to know 3gpp video/audio file format and also a way to decode the file (for showing in the UI).
This is by no means a trivial task.
Related
I want to create an app for sharing audio files. I want to build native mobile apps and made most of my progress on android with a PHP/MySQL backend so far. But now I want to step up my game and build my backend with Node.js and MongoDB.
Since big audio files take a while do download and can worsen the user experience I wondered if it is possible to just download the first 20% of an audio file. When the user reaches a certain point of the audio it downloads the rest/the next section. Therefore, we do not need to download the entire audio that might never get used. I just wonder if it is that difficult to add another section of the audio while playing without any interruptions.
For some reason I think this is how the big social media apps work but I cannot find any sources on this topic. I don't ask for code but just suggestions and references to help me. Am I on a good track or are there are ways to solve this problem? Also can you recommend to use Digital Ocean Spaces for this task??
Sources for Android and IOS will be very helpful!
You can do it by providing a "Range" attribute to the header of the HTTP-Request you are sending to the Digital Ocean space for the desired media file. The "Range" attribute says the number of bytes you want to receive.
I am trying to display the preview thumbnail when user move his finger over video scrubber.
The only solution I m finding is to extract thumbnails using some 3rd party tool and save it to server or pass it to app via some JSON.
What I m trying to do is something similar to JwPlayer (http://jwplayer.electroteque.org/controls-preview)
Any idea where to start?
Or is here any standard protocol that support manual generated thumbnails? Or i need to go with my own feed format.
I don't quite know what the configuration of your project is, but one possibility is too actually instantiate a mini player and display the progress of the video as the user the slides. So essentially this "mini player" would appear when the user begins drag, and skip to whatever time is specified, and pause. It is similar to a project I am working on now. This is a great reference as well: http://www.autodeskresearch.com/pdf/p1159-matejka.pdf. This technique is much different then the one I suggested, but is another alternative depending on your scenario.
Hey I'm stuck with this problem for quite a while
I need to have a backround activity in android which will be running to detect any photo/video activity, the minute a photo or video is taken it should make an entry into a text file:
The entry should look like this : [uri_of_new_photo, time, gps-location]
What are the possible ways in which i can achieve this, I was looking at the BroadcastReciever, but was not sure if that would work.
Are there any tutorials/links which can give me a solution. A direct solution to this problem would be great!! (rather than alternatives, as this is a small part of a bigger project)
What are the possible ways in which i can achieve this
Technically, it's not possible. Anyone is welcome to write a camera application that takes photos or videos and does not tell you about them.
I was looking at the BroadcastReciever, but was not sure if that would work.
I am not sure what "the BroadcastReceiver" is that you are referring to.
You are welcome to use FileObserver to try to monitor likely places for photos and recorded videos. However, there is no guarantee that apps will write their photos or recorded videos in the places that you are looking. And, just because there is a new file in one of those directories does not mean that the user took a photo or recorded a video -- they could have simply copied a file into that directory, or obtained the file from the Internet (e.g., Flickr sync). And, this will only work while your app is running.
You are welcome to use a ContentObserver on MediaStore. It will suffer from the same basic problems as would the FileObserver approach that I mentioned.
If you want to reliably log information about the time and location of photos and videos, write your own camera app.
I'd like to open files such as photos, documents, music and video in my application. I've seen a lot of applications that open up the files in the device's default program for that filetype.
Is there a way to somehow view the files in my application without opening another application?
Reading files in Android is just as simple as any other Java application. Depending on what type of file you want to read and display, you will do different things, this question tells you how to read a text file. The principle for other types is about the same. For images, you can simply use BitmapFactory.decodeFile(). I don't have experience with video or audio, but MediaPlayer looks like a promising first step.
You can do it, but only by writing your own Activity that can handle that type of media. So it can be a lot of work, depending on what you want to do. HTML, images, video, and audio are relatively easy, but if you want to do something like view PDF or office documents, you're setting yourself up for a tremendous amount of coding. Probably better just to launch someone else's viewer to view the relevant content; that's how almost everyone does it on Android.
I'm trying to find a way to bypass the selection pop-up for podcasts and just tell android to download the file.
Currently when you open a link to a podcast a little menu pops up and has two buttons. One says download, and one says listen. Instead I want "Download" or "Cancel".
I have looked into this and I found the DownloadManager class, but sadly (I think) it is only for 2.3, and the app is being developed for 2.2.
Does anyone know how android did file downloading before this? Is there a specific intent I can pass the link to?
Thanks!
Well, without code I can only guess.
It sounds as if you have a Web View or Browser that is interpreting the url being opened based on part of the url scheme. This is causing the operating system to try to resolve activities that are available for this url. You're seeing two activities (download or listen) which are supported by activities available on the phone. In this situation you will need to overload the loading of urls using this tutorial,
Of course, without some crystal ball I can't be certain of this based on what you've said. If this is the case and you want to know how to download it. You would need to build a downloader of your own, which is possible using Java Streams, Java NIO or some of the Apache HTTP Client libraries. Based on the size of your files, it may make sense to use Buffered Java Streams with the Apache Http Client objects.
You can find an example of how to do this here.