127

You need to install Soundflower in order to run it on El Capitan. El Capitan requires kext to be signed in order to load them. This one gets its kext installed in /Library/Extensions/. This is due to System Integrity Protection Then, you have to create a multi-output device with: Audio MIDI Setup.app, which is found in /Applications/Utilities/ : Finally, ...


66

Sounds like a permissions problem. If it’s a bug I suspect it will be fixed in a future macOS update. Not much help, I know. Until then, you have to peek behind the curtain: Unsaved recordings are stored at ~/Library/Containers/com.apple.QuickTimePlayerX/Data/Library/Autosave Information/ The file will be called Unsaved QuickTime Player Document....


56

If you have ffmpeg installed, it is quite easy to do it ffmpeg -i input.mov output.mp4 If you don't, install it as follows: Press Command + Space, type "Terminal" and press enter/return key. Run this command in the Terminal app: ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" and press enter/return key. If the ...


40

This answer will be short: VLC. Has everything you need except the rotation. It's a media player, not a video editor. To alter the playback speed in VLC: Go to to Playback → Playback Speed. You can also alter the playback speed using ⌘= and ⌘-. For rotation, as user Iwillnotexist Idonotexist notes in the comments below, you can go to Window → Video Effects ...


37

You can use Quicktime 10.x to split the movie into multiple clips, and then trim the individual clips. When you're done editing the individual clips and you save/export the movie, you get exactly what you want: one single, continuous movie, sans the parts you trimmed. Split a movie into clips In QuickTime Player, drag the playhead (the small diamond) in ...


37

In short, you (often) need to include the argument -pix_fmt yuv420p when using ffmpeg to generate H.264 content for Apple software/devices, and a bunch of other decoders that don't handle yuv444p. # ffmpeg -i input.avi -pix_fmt yuv420p output.mp4 This is not mentioned in the output when using the defaults, but can be found in their Encode/H.264 guide. It ...


36

defaults write com.apple.iphonesimulator ShowSingleTouches 1 How did I find this setting? Hidden options can be found by running the command below and then, well, figuring out what they do. They are undocumented and can be removed at any time. strings /Applications/Xcode.app/Contents/Developer/Applications/Simulator.app/Contents/MacOS/Simulator | grep -E '...


24

With a recent version of VLC, go to the "Window" menu and choose "Media Information" (or press ⌘ I). If you have more than one video in your playlist, make sure the desired one is selected. Switch to the "Codec Details" tab, then click to expand the details for each stream until you find the video stream. The frame rate is listed there. The ...


19

As of OSX Sierra, it's here: ~/Library/Containers/com.apple.QuickTimePlayerX/Data/Library/Autosave Information In there, there is a container/package/directory called Unsaved QuickTime Player Document.qtpxcomposition that contains a Screen Recording.mov file with the actual video. You can copy-paste that mov file wherever to save it permanently. You can ...


15

For those wanting to record their voice or the sounds coming from the speakers... No extra software is required. You just need to click the little arrow to the right of the record button and change it from None to Internal Microphone. Not sure why this is defaulted to None but I was caught by surprise when I changed from an old Macbook to a new one with a ...


15

QuickTime has had this feature for a while now, well before Sierra. Open a video with QuickTime Player. View > Float on Top. Right-click or Control-click on the QuickTime Player icon in the Dock. Options > Assign To: All Desktops. (This is available for any app.)


14

iMovie (not lossless, but better than before) iMovie v10 (released some time after the question was originally asked) now better handles more media types, so avoids the import re-encode for most H.264 (mp4, m4v, mov, AVHDC, mts, mt2s) content. It will still, however, re-encode on export so cannot be technically lossless—another new feature, however, is the ...


14

Slow Motion Forward: Hold K+L together (this gives you audio) or hold right-arrow. Slow Motion Reverse: Hold J+K together (this gives you audio) or hold left-arrow.


13

ffmpeg supports demuxing without re-encoding: ffmpeg -i input.mkv # show stream numbers and formats ffmpeg -i input.mkv -c copy audio.m4a # AAC ffmpeg -i input.mkv -c copy audio.mp3 # MP3 ffmpeg -i input.mkv -c copy audio.ac3 # AC3 ffmpeg -i input.mkv -an -c copy video.mkv ffmpeg -i input.mkv -map 0:a:1 -c copy audio.m4a # stream 1 -c copy is like -vcodec ...


13

Start by selecting "New Video Recording" from the File menu. Quicktime Player will open a preview window streaming your webcam video. Resize and position as desired. Select "Float on Top" from the View menu. Now start your screen recording.


13

A good solution is to simply drag a video file to the address bar in Safari and use its PIP feature.


11

Audio tracks can be removed from QuickTime movies using Automator. This workflow will remove the audio track from all the files in the Movies folder on the desktop. Note this will remove the audio tracks in situ so please take a copy of them if you want to keep the audio.


10

VLC for macOS is the video player you are looking for. It includes support for wide variety of audio and video codecs. Get the latest version from the download page or install via Homebrew by running: brew cask install vlc Once installed, open VLC Preferences by going to VLC → Preferences in the Menu bar or using the keyboard shortcut Command + ,. Click ...


10

Avidemux is a lightweight editor that can split videos without transcoding: Start Avidemux Open a file e.g. by dropping it into the Avidemux window Choose where your video should start and then click on the (red) “A” button below. Choose where your video should stop and then click on the “B” button below. Select an output format (e.g. mp4). Note: there ...


10

Go to System Preferences > Security & Privacy > Privacy > Microphone, unlock the preference pane by clicking the padlock symbol at the bottom left of the window and tick "QuickTime Player.app", which should be listed without a tick mark in its checkbox. If QuickTime Player.app is missing, you should be able to reset all decisions you made for the ...


9

I regularly watch MKV files with H.264 1080p video on my retina MBP 15" (late 2013, Intel GPU only), and up until now, I did so using the latest version of VLC. Unfortunately the battery drains pretty quickly with this setup and I decided to investigate alternatives. In trying to be a little scientific, I created a spreadsheet listing the CPU time used (...


9

Turns out this is actually possible by employing a double link trick. In the terminal: $ cd ~/Library/Containers/com.apple.QuickTimePlayerX $ mv Data Data_bak $ ln -s /Volumes/SSD/QuicktimeScratch DataSSD $ ln -s DataSSD Data and voila! This sets up Data as a link pointing to the local DataSSD file, which in turn is a link pointing to the actual SSD ...


9

After having your screen recorded and the file in MOV format, you could use iMovie to convert it to MP4. open the file in iMovie File / Share / File... adjust your preferences in the dialog box press "Next..." the created file will be in MP4 Hope this helps. Cheers!


9

When you are in the recording screen window, at the right of the red button you must see an arrow, click on it and you should see the audio input dialog. Tested now with OS X 10.11.1


8

If you change the extension to .mov then drag it over, it’ll ask you to optimize for iOS, at which point it will treat the GIF as a movie.


8

I made a graphical tool that uses ffmpeg to let you losslessly trim videos by selecting the start and end points on the timeline: https://github.com/mifi/lossless-cut It is open source and cross platform.


8

You have inadvertently wandered into the murky realm of video codecs. The screen recording you made with Quicktime was initially saved using the extremely efficient H.264 compression algorithm. H.264 is a codec optimised for distribution of video. It is designed to store video using the least possible amount of data at the cost of using a lot of CPU time ...


7

Quicktime 7 Pro ($30) Open your video. If you want to see the exact frame number: in the lower left, click on the timer to switch to "Frame Number" display. Select the start point (type i when you are there) and end point (type o when you are there). Move one frame at a time with the arrow keys; or drag the little handles on the bottom. (Here we see ...


7

I use mplayer in its Cocoa form MplayerX like VLC it can't edit the video but just plays it. (There is a version in the Mac App Store but it is old as Apple does not now allow some of the functions the are needed (although I had no issues with it until I upgraded to Yosemite) To increase speed go to AVS->Increase Speed (or decrease) or ⌘] or ⌘[ I prefer ...


7

UPDATE: Answer by @Andre LaBranche is better, go read that Save this script as caperture.swift: #!/usr/bin/env xcrun swift import Foundation // Start QuickTime Player using AppleScript func startQT() { var scriptToPerform: NSAppleScript? let asCommand = "tell application \"QuickTime Player\" \n" + " activate \n&...


Only top voted, non community-wiki answers of a minimum length are eligible