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webm格式转换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.
Mozilla即将进行夏威夷之旅,准备成为一个好家庭男人,我要带上我的妻子和两个小儿子。 贪吃惩罚? 大概。 无论如何,我一直在疯狂地使用youtube-dl从YouTube下载卡通作品,并将其放到我们的新iPad上,以使长子在长途飞行中不被占用。
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:
YouTube似乎保留了原始的视频格式,因为有时youtube-dl提供了webm,而其他时候提供了mp4。 由于mp3是iOS最好的朋友,因此我需要将webm文件转换为mp4。 以下ffmpeg命令将实现此目的:
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.
qscale 0
指令指示ffmpeg在转换过程中不要调整视频质量。 通过这种转换,我现在可以将视频正确地传输到我的iPad上了。
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.
查看我的媒体教程 ,以获取有关视频,音频和图像的更多魔术。 您一定会学到一些技巧。
翻译自: https://davidwalsh.name/convert-webm-mp4
webm格式转换mp4
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