A sample app that displays the basic info about a video file: format name, video codec and frame size. Also the app shows 1, 4 or 9 equidistant frames from the video.
The main purpose is to show how to use the output of ffmpeg-android-maker.
The codebase has a native part that glues FFmpeg libs to jvm part.
FFmpeg accepts 2 types of input: File paths and File Descriptors. File paths are better and allow the FFmpeg to use all the functionality it has. File Descriptors can be passed to FFmpeg via pipe protocol, but it has certain problems like inability to seek backward. That is why the number of frames shown when pipe protocol is used is limited to 4 only. File protocol doesn't have this problem.
App uses ACTION_GET_CONTENT to pick video/* files. So it can accept files from many different apps. The app ignores Storage Access Framework as many of standard and 3rd party apps do. Also app can handle ACTION_VIEW, when a video file is opened from another app.
App tries to recreate a raw file path from a Uri and pass it to FFmpeg. If it doesn't succeed, it falls back to File Descriptor way.
The app is minimalistic: standard MVC approach and only Kotlin as an external dependency.
The rest is pretty standard Android-related burden.
And here is how it looks like:
| Files from Download folder | Handling ACTION_VIEW from Dropbox app | File from Google Drive app |
|---|---|---|
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First, initialise the submodule:
git submodule update --init
Then you need to setup and execute the ffmpeg-android-maker's script. More details can be found here
Just import in Android Studio and run.
WhatTheCodec app's source code is available under the MIT license. See the LICENSE.txt file for more details.