小编Ash*_*fny的帖子

我试图用ffmpeg重新编码视频,我收到此错误:

[aac @ 0x3752e40] The encoder 'aac' is experimental but experimental codecs are not enabled, add '-strict -2' if you want to use it.

命令和完整输出::

/root$ /usr/bin/ffmpeg -i http://website.com/uploads/usr_videos/MVI_05571.mp4  -b:v 500k  -threads 4 -vf scale=-1:144  -b:a 128k http://website.com/uploads/usr_videos/144p_output.mp4
ffmpeg version 2.5.4 Copyright (c) 2000-2015 the FFmpeg developers
built on Feb 18 2015 01:39:38 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-11)
configuration: 
libavutil      54. 15.100 / 54. 15.100
libavcodec     56. 13.100 / 56. 13.100
libavformat    56. 15.102 / 56. 15.102 …

我有一个 Android 应用程序，它使用 google 身份验证来注册用户
，我正在使用它laravel socillite进行身份验证

我无法让它工作，因为 android 应用程序向我发送了授权代码而不是访问令牌，而且我不知道如何从中获取访问令牌根据Authorization Code
我的理解，我应该执行以下操作：

• access token从 android获取Authorization Code
• 用于Socialite::driver('google')->userFromToken($token)获取用户数据
• 将令牌发送JWT到 Android 设备
  任何人都可以解释我如何使用laravel socillite

我使用twilio与twilio-videovbeta-2上的主分支计数这个回购https://github.com/twilio/video-quickstart-js
我显示选择介质和设备推入，但是当我试图updateVideoDevice我一个错误

updateVideoDevice error TypeError: track must be a LocalAudioTrack, LocalVideoTrack, LocalDataTrack, or MediaStreamTrack
at Object.INVALID_TYPE (index.js:30952)
at Object.validateLocalTrack (index.js:31469)
at LocalParticipant.unpublishTrack (index.js:17047)
at index.js:17096
at Array.reduce (<anonymous>)
at LocalParticipant.unpublishTracks (index.js:17095)
at index.js:36056

我的updateVideoDevice功能如下

function updateVideoDevice(event) {
const select = event.target;
const localParticipant = room.localParticipant;
if (select.value !== '') {
    Video.createLocalVideoTrack({
        deviceId: { exact: select.value }
    }).then(function(localVideoTrack) {
        const tracks = Array.from(localParticipant.videoTracks.values());
        localParticipant.unpublishTracks(tracks);
        log(localParticipant.identity + " removed track: " + tracks[0].kind); …