blocks|key|4826292|text|📷|type|atomic|depth|inlineStyleRanges|entityRanges|offset|length|data|4826293|4k视频到Mp3最适合我。|unstyled|4826294|https://www.4kdownload.com/products/product-videotomp3|4826295|这个应用程序的优点是它同时进行多个转换，非常fast.and，它将随机相册艺术应用于从视频中捕获的Mp3。|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://i.stack.imgur.com/Lquvs.png|imageAlt|1|LINK|MUTABLE|url|http://itsfoss.com/extract-audio-video-ubuntu/|2^0|0|1|0|0|0|8|1|0|0|1I|2|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|F|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|G|3|H|5|F|7|16|8|@]|9|@$A|17|B|18|1|19]]|C|$]]|$1|I|3|J|5|F|7|1A|8|@]|9|@]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q|R|-4]]|S|$5|T|N|U|C|$V|W]]|X|$5|T|N|U|C|$V|H]]]]

<a href="https://i.stack.imgur.com/Lquvs.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Lquvs.png" alt="enter image description here"></a>

<a href="http://itsfoss.com/extract-audio-video-ubuntu/" rel="nofollow noreferrer">4k Video to Mp3</a> Best suit for me.

<a href="https://www.4kdownload.com/products/product-videotomp3" rel="nofollow noreferrer">https://www.4kdownload.com/products/product-videotomp3</a>

and the advance of this piece of app is it do multiple converts concurrently very fast.and it applies a random album art to the Mp3 captured from the video.

blocks|key|4826487|text|📷|type|atomic|depth|inlineStyleRanges|entityRanges|offset|length|data|4826488|dmMediaConverter是一个跨平台的FFmpeg前端(GUI)，公开了它的一些特性。它的目的是简单和易于使用，但也能够实现复杂的任务。我的灵感来自很多媒体转换器，如手闸，WinFF和MkvMergeGui。他们中的大多数人都缺少一个功能，就是视频流拷贝(通过)，这使得我建立了这个系统。|unstyled|4826489|您可以使用它做很多事情(提取音频、裁剪、拆分、合并、刻录字幕、水印、缩放、批量转换等)，所以请检查它：|4826490|http://dmsimpleapps.blogspot.ro/2014/04/dmmediaconverter.html|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://i.stack.imgur.com/hMY8P.png|imageAlt|1|LINK|MUTABLE|url|2^0|0|1|0|0|0|G|1|0|0|0|1P|2^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@$A|Y|B|Z|1|10]]|C|$]]|$1|D|3|E|5|F|7|11|8|@]|9|@$A|12|B|13|1|14]]|C|$]]|$1|G|3|H|5|F|7|15|8|@]|9|@]|C|$]]|$1|I|3|J|5|F|7|16|8|@]|9|@$A|17|B|18|1|19]]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q|R|-4]]|S|$5|T|N|U|C|$V|J]]|W|$5|T|N|U|C|$V|J]]]]

<a href="https://i.stack.imgur.com/hMY8P.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/hMY8P.png" alt="enter image description here"></a>

<a href="http://dmsimpleapps.blogspot.ro/2014/04/dmmediaconverter.html" rel="nofollow noreferrer">dmMediaConverter</a> is a crossplatform FFmpeg frontend (GUI) exposing some of its features. It is intended to be simple and easy to use but also to be able to achieve complex tasks. I have inspired myself from a lot of media converters like Handbrake, WinFF and MkvMergeGui. One feature was lacking from most of them, video stream copy (pass-through), that made me build this.

You can do a lot of stuff (extract audio, crop, split, merge, burn subtitles, watermark, scale, bulk convert, etc) with it so check it out:

<a href="http://dmsimpleapps.blogspot.ro/2014/04/dmmediaconverter.html" rel="nofollow noreferrer">http://dmsimpleapps.blogspot.ro/2014/04/dmmediaconverter.html</a>

blocks|key|3781795|text|我建议你使用Ubuntu的HandBrake视频转换器。HandBrake是一个开源的，GPL许可的，多平台的，多线程的标准或高质量的转换，并调整了许多基本的和高级的选项，以改善您的代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3781796|文件格式:支持MP4、MKV、AVI或OGM。|3781797|视频:+MPEG-4或H.264+(1或2通或恒定量化/速率编码)|3781798|音频:+AAC，MP3，Vorbis或AC-3通过(支持对几个音轨进行编码)|3781799|全安装指南|offset|length|entityMap|0|LINK|mutability|MUTABLE|url|https://webcheerz.com/best-video-converter-ubuntu/?utm_source=AskUbuntu&utm_medium=Link&utm_campaign=AskUbuntu^0|0|0|0|0|0|5|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|U|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|V|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|W|8|@]|9|@$J|X|K|Y|1|Z]]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

I would suggest you to go for HandBrake Video Convertor for Ubuntu. HandBrake is an open-source, GPL-licensed, multiplatform, multithreaded for standard or high quality conversions and tweak many basic and advanced options to improve your encodes.

File format: 
It Supports MP4, MKV, AVI or OGM

Video: MPEG-4 or H.264 (1 or 2 passes or constant quantizer/rate encoding)

Audio: AAC, MP3, Vorbis or AC-3 pass-through (supports encoding of several audio tracks)

<a href="https://webcheerz.com/best-video-converter-ubuntu/?utm_source=AskUbuntu&amp;utm_medium=Link&amp;utm_campaign=AskUbuntu" rel="nofollow noreferrer">Full Installation Guide</a>

blocks|key|3781414|text|HandBrake是一个开源的多线程视频转码器:它将数字媒体从一种格式转换为另一种格式，在此过程中压缩文件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3781415|Arista是一个简单的使用多媒体转码器的GNOME桌面。选择一个输入文件，DVD，或视频4+Linux设备，输出设备，预置和走。功能实时编码预览，自动发现。|3781416|dmMediaConverter是一个跨平台的FFmpeg前端(GUI)，公开了它的一些特性。它的目的是简单和易于使用，但也能够实现复杂的任务。|3781417|互联网友好的媒体编码器将您的所有视频转换为最新和下一代视频编解码器。该H.265标准，能够产生相同的质量，同时减少带宽高达50%25，这意味着能够缩小一半的原始文件大小。|3781418|更多信息请访问:来源：http://alternativeto.net/software/freemake-video-converter/?platform=linux|offset|length|entityMap|0|LINK|mutability|MUTABLE|url|http://alternativeto.net/software/freemake-video-converter/?platform=linux^0|0|0|0|0|B|22|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|U|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|V|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|W|8|@]|9|@$J|X|K|Y|1|Z]]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

HandBrake
Is an open-source, multithreaded video transcoder: it converts digital media from one format to another, compressing the files in the process.

Arista
Is a simple to use multimedia transcoder for the GNOME Desktop. Choose an input file, DVD, or Video 4 Linux device, an output device, a preset and go. Features live encoding preview, automatic discovery.

dmMediaConverter is a crossplatform FFmpeg frontend (GUI) exposing some of its features. It is intended to be simple and easy to use but also to be able to achieve complex tasks. 

Internet Friendly Media Encoder
Convert all your video to the latest and next generation video codec. The H.265 standard, able to produce same quality while reduce bandwidth up to 50%, which mean capable shrink half of original file size.

And more at: source:<a href="http://alternativeto.net/software/freemake-video-converter/?platform=linux" rel="nofollow">http://alternativeto.net/software/freemake-video-converter/?platform=linux</a>

blocks|key|3781510|text|试试开拍吧。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3781511|sudo+apt-get+install+openshot|code-block|syntax|javascript|3781512|📷|atomic|offset|length|3781513|以下是Open快照软件的特性：|3781514|+++Support+for+many+video,+audio,+and+image+formats+(based+on+FFmpeg+)

+++Gnome+integration+(drag+and+drop+support)

+++Unlimited+tracks+/+layers

+++Clip+resizing,+scaling,+trimming,+snapping,+and+cutting

+++Video+transitions+with+real-time+previews

+++Compositing,+image+overlays,+watermarks

+++Title+templates,+title+creation,+sub-titles

+++3D+Animated+Titles

+++SVG+friendly,+to+create+and+include+vector+titles+and+credits

+++Scrolling+motion+picture+credits

+++Solid+color+clips+(including+alpha+compositing+)

+++Support+for+Rotoscoping+/+Image+sequences

+++Advanced+Timeline+(including+Drag+&+drop,+scrolling,+panning,+zooming,+and+snapping)

+++Frame+stepping+(key-mappings:+J,+K,+and+L+keys)

+++Video+encoding+(based+on+FFmpeg+)

+++Key+Frame+animation

+++Digital+zooming+of+video+clips

+++Speed+changes+on+clips+(slow+motion+etc)

+++Custom+transition+lumas+and+masks

+++Audio+mixing+and+editing

+++Presets+for+key+frame+animations+and+layout

+++Ken+Burns+effect+(artistic+panning+over+an+image)

+++Digital+video+effects+,+including+brightness,+gamma,+hue,+greyscale,+chroma+key+(bluescreen+/+greenscreen)+,+and+over+20+other+video+effects

+++OpenShot+provides+extensive+editing+and+compositing+features,+and+has+been+designed+as+a+practical+tool+for+working+with+high-definition+video+including+HDV+and+AVCHD+.|3781515|见此处：主要网站|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://i.stack.imgur.com/repp9.png|imageAlt|1|LINK|MUTABLE|url|http://www.openshot.org/^0|0|0|0|1|0|0|0|0|4|4|1^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|I|7|16|8|@]|9|@$J|17|K|18|1|19]]|A|$]]|$1|L|3|M|5|6|7|1A|8|@]|9|@]|A|$]]|$1|N|3|O|5|D|7|1B|8|@]|9|@]|A|$E|F]]|$1|P|3|Q|5|6|7|1C|8|@]|9|@$J|1D|K|1E|1|1F]]|A|$]]]|R|$S|$5|T|U|V|A|$W|X|Y|-4]]|Z|$5|10|U|11|A|$12|13]]]]

Try Openshot.

<pre><code>sudo apt-get install openshot
</code></pre>

<img src="https://i.stack.imgur.com/repp9.png" alt="enter image description here">

Here are the features of Openshot software:

<pre><code> Support for many video, audio, and image formats (based on FFmpeg )

 Gnome integration (drag and drop support)

 Unlimited tracks / layers

 Clip resizing, scaling, trimming, snapping, and cutting

 Video transitions with real-time previews

 Compositing, image overlays, watermarks

 Title templates, title creation, sub-titles

 3D Animated Titles

 SVG friendly, to create and include vector titles and credits

 Scrolling motion picture credits

 Solid color clips (including alpha compositing )

 Support for Rotoscoping / Image sequences

 Advanced Timeline (including Drag &amp; drop, scrolling, panning, zooming, and snapping)

 Frame stepping (key-mappings: J, K, and L keys)

 Video encoding (based on FFmpeg )

 Key Frame animation

 Digital zooming of video clips

 Speed changes on clips (slow motion etc)

 Custom transition lumas and masks

 Audio mixing and editing

 Presets for key frame animations and layout

 Ken Burns effect (artistic panning over an image)

 Digital video effects , including brightness, gamma, hue, greyscale, chroma key (bluescreen / greenscreen) , and over 20 other video effects

 OpenShot provides extensive editing and compositing features, and has been designed as a practical tool for working with high-definition video including HDV and AVCHD .
</code></pre>

See here : <a href="http://www.openshot.org" rel="nofollow noreferrer">Main Web-site</a>

blocks|key|3781669|text|这个答案的一部分来自：将mp4文件从720+p转换为480+p的软件|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3781670|基于Miksoft的移动媒体转换器可以是一种更容易完成转码任务的方法。|3781671|📷|atomic|3781672|在上面的屏幕截图中，我们可以看到一个视频队列(本例中的一个)将使用相同的自定义属性进行处理，其中包括对下一个或多个视频的转码：|3781673|For+Audio|header-two|3781674|音频比特率|ordered-list-item|3781675|音频|3781676|音频通道|3781677|音频编解码器|3781678|用于视频|3781679|视频比特率|3781680|视频FPS|3781681|视频大小|3781682|视频编解码|3781683|当然，您需要添加(自己的)适当的编解码器，以便将您的视频文件转码，以便它们在“视频编解码器”中可用。|3781684|请看一下这个答案，其中我解释了一些相关的问题。|3781685|如何最大限度地压缩视频文件？|3781686|祝好运!|entityMap|0|LINK|mutability|MUTABLE|url|https://askubuntu.com/questions/620680/software-for-converting-mp4-files-from-720p-to-480p/638695#638695|1|https://www.miksoft.net/mobileMediaConverter.php|2|https://en.wikipedia.org/?title=Transcoding|3|IMAGE|IMMUTABLE|imageUrl|https://i.stack.imgur.com/ifv4k.png|imageAlt|4|https://askubuntu.com/questions/25514/how-can-i-maximum-compress-video-files/25532#25532^0|B|N|0|0|0|H|1|R|2|2|0|0|1|3|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|E|4|0^^$0|@$1|2|3|4|5|6|7|1X|8|@]|9|@$A|1Y|B|1Z|1|20]]|C|$]]|$1|D|3|E|5|6|7|21|8|@]|9|@$A|22|B|23|1|24]|$A|25|B|26|1|27]]|C|$]]|$1|F|3|G|5|H|7|28|8|@]|9|@$A|29|B|2A|1|2B]]|C|$]]|$1|I|3|J|5|6|7|2C|8|@]|9|@]|C|$]]|$1|K|3|L|5|M|7|2D|8|@]|9|@]|C|$]]|$1|N|3|O|5|P|7|2E|8|@]|9|@]|C|$]]|$1|Q|3|R|5|P|7|2F|8|@]|9|@]|C|$]]|$1|S|3|T|5|P|7|2G|8|@]|9|@]|C|$]]|$1|U|3|V|5|P|7|2H|8|@]|9|@]|C|$]]|$1|W|3|X|5|6|7|2I|8|@]|9|@]|C|$]]|$1|Y|3|Z|5|P|7|2J|8|@]|9|@]|C|$]]|$1|10|3|11|5|P|7|2K|8|@]|9|@]|C|$]]|$1|12|3|13|5|P|7|2L|8|@]|9|@]|C|$]]|$1|14|3|15|5|P|7|2M|8|@]|9|@]|C|$]]|$1|16|3|17|5|6|7|2N|8|@]|9|@]|C|$]]|$1|18|3|19|5|6|7|2O|8|@]|9|@]|C|$]]|$1|1A|3|1B|5|6|7|2P|8|@]|9|@$A|2Q|B|2R|1|2S]]|C|$]]|$1|1C|3|1D|5|6|7|2T|8|@]|9|@]|C|$]]]|1E|$1F|$5|1G|1H|1I|C|$1J|1K]]|1L|$5|1G|1H|1I|C|$1J|1M]]|1N|$5|1G|1H|1I|C|$1J|1O]]|1P|$5|1Q|1H|1R|C|$1S|1T|1U|-4]]|1V|$5|1G|1H|1I|C|$1J|1W]]]]

Parts of this answer comes from: <a href="https://askubuntu.com/questions/620680/software-for-converting-mp4-files-from-720p-to-480p/638695#638695">Software for converting mp4 files from 720p to 480p</a>

<hr>

<a href="https://www.miksoft.net/mobileMediaConverter.php" rel="nofollow noreferrer">Mobile Media Converter by Miksoft</a> can be an easier way to do <a href="https://en.wikipedia.org/?title=Transcoding" rel="nofollow noreferrer">transcoding</a> tasks.

<img src="https://i.stack.imgur.com/ifv4k.png" alt="enter image description here">

In the above screenshot we can see a queue of videos (one in this example) to be processed with the same customised properties which includes transcoding for one or more of the next:

<h2>For Audio</h2>

<ol>
<li>Audio Bitrate</li>
<li>Audio Frequency</li>
<li>Audio Channels</li>
<li>Audio Codec</li>
</ol>

For Video

<ol>
<li>Video Bitrate</li>
<li>Video FPS</li>
<li>Video Size</li>
<li>Video Codec</li>
</ol>

Of course you will be in need to add (on your own) the proper codecs for which you wish transcoding your video files so that they will become available in the "Video Codec" Drop Down.

Please have a look at this answer in which I explain something related.

<a href="https://askubuntu.com/questions/25514/how-can-i-maximum-compress-video-files/25532#25532">How can I maximum compress video files?</a> 

Good luck!

What are good Video Converters available for ubuntu? 

I mean at least they should be able do Video ->Audio Conversion. Something like Total Video Converter/ Freemake Video converter available for Windows.GUI applications are much preferred.

VIdeo Converters for Ubuntu

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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什么是好的视频转换器可用于ubuntu？我的意思是，至少他们应该能够做视频->Audio转换。类似总视频转换器/共济会视频转换器，可用于Windows.GUI应用程序是非常可取的。

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