Convert webm to mp4
There's an upcoming Mozilla trip to Hawaii on the cards and, in trying to be a good family man, I'm bringing my wife and two young sons. Glutton for punishment? Probably. Anyways, I've been feverishly downloading cartoons from YouTube using youtube-dl to put onto our new iPad to keep my oldest son occupied during the long flight.
It seems as though YouTube preserves the original video format, since sometimes youtube-dl provides a webm and other times a mp4. Since mp3s are iOS' best friend, I've needed to convert the webm files to mp4. The following ffmpeg command will make that happen:
ffmpeg -i "Spider-Man.webm" -qscale 0 "Spider-Man.mp4"
The qscale 0 directive instructs ffmpeg not to adjust quality of the video during conversion. And with this conversion I can now properly transfer the videos onto my iPad.
Check out my media tutorials for more magic when it comes to video, audio, and images. You're sure to learn a few tricks along the way.
![I’m an Impostor]()
This is the hardest thing I've ever had to write, much less admit to myself. I've written resignation letters from jobs I've loved, I've ended relationships, I've failed at a host of tasks, and let myself down in my life. All of those feelings were very...
![Create a CSS Cube]()
CSS cubes really showcase what CSS has become over the years, evolving from simple color and dimension directives to a language capable of creating deep, creative visuals. Add animation and you've got something really neat. Unfortunately each CSS cube tutorial I've read is a bit...
![MooTools HTML Police: dwMarkupMarine]()
We've all inherited rubbish websites from webmasters that couldn't master valid HTML. You know the horrid markup: paragraph tags with align attributes and body tags with background attributes. It's almost a sin what they do. That's where dwMarkupMarine comes in.
![Comment Preview Using MooTools]()
Comment previewing is an awesome addition to any blog. I've seen really simple comment previewing and some really complex comment previewing. The following is a tutorial on creating very basic comment previewing using MooTools.
The XHTML
You can set up your XHTML any way you'd like.
Hello,
Have a look at this : https://www.onlinevideoconverter.com/firefox-addon
This Grease adds a “convert” video to Youtube. Everything is processed on their server and it’s pretty fast !
What about using the
--list-formatsargument with youtube-dl and download the MP4 that suits your needs?Suggested code doesn’t work (10/22/17), Ubuntu 16.04.3 amd64
“The encoder ‘aac’ is experimental but experimental codecs are not enabled, add ‘-strict -2’ if you want to use it.”
It now says “Please use -q:a or -q:v, -qscale is ambiguous”.
I guess
-q:v 0would be the new substitute.