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.
![fetch API]()
One of the worst kept secrets about AJAX on the web is that the underlying API for it, XMLHttpRequest, wasn't really made for what we've been using it for. We've done well to create elegant APIs around XHR but we know we can do better. Our effort to...
![How I Stopped WordPress Comment Spam]()
I love almost every part of being a tech blogger: learning, preaching, bantering, researching. The one part about blogging that I absolutely loathe: dealing with SPAM comments. For the past two years, my blog has registered 8,000+ SPAM comments per day. PER DAY. Bloating my database...
![Check All/None Checkboxes Using MooTools]()
There's nothing worse than having to click every checkbox in a list. Why not allow users to click one item and every checkbox becomes checked? Here's how to do just that with MooTools 1.2.
The XHTML
Note the image with the ucuc ID -- that...
![MooTools TwitterGitter Plugin]()
Everyone loves Twitter. Everyone loves MooTools. That's why everyone should love TwitterGitter, a MooTools plugin that retrieves a user's recent tweets and allows the user to format them however the user would like. TwitterGitter allows the user to choose the number of...
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.