How To Compress Videos To Send Them By Email

Saikat Basu 05-02-2010

emailme2Let’s break a few email etiquettes along the way. I wouldn’t advocate sending videos through plain old email because it clogs up bandwidth and holds up the queue of emails downloading behind it. Heaven forbid if someone is on a dial-up connection or a slow WiFi.


There are other ways to send videos across – YouSendIt is one which even has an Outlook plug-in. Then, you can throw a stone and hit any of the file sharing services File Sharing Round-up: The Only Ones You Need Read More (also check out this roundup of a few more desktop file sharing clients 5 Ways to Transfer Files From One Computer to Another Need to transfer files from one PC to another? Here's how to do that quickly and easily, using both hardware and software. Read More ).

If you are back from all those pages I sent you to, then it means that you are hell bent on learning how to compress videos to send them by email.

Here’s the bad news”¦video files are among the largest single chunks of digital content out there. So, an elephant won’t turn into an ant even with compression. The good news is that video files can be compressed to somewhere in between an elephant and an ant, say a cow. Yes, the mutation can be done for free. The only cost which you might have to pay is a slight loss in quality (audio, video or both). But that’s made up by the decrease in file size.

But compression is really a complex subject. It is something that’s on the frontiers of today’s science. You have knotty issues of lossy and lossless compressions, bit rates, codecs, and the list goes on. I am too woolly over it, so I will direct you to this page where you can read up on it.

With that light touch on the background, let’s return to the action steps we need to take to compress a video for email. As we will see, it’s all about size and there are more than a few ways to slice the pixels.


Compressing Videos with VirtualDub

VirtualDub is an Open Source free video tool which mainly handles AVI files. It can read (not write) MPEG-1 files. The best thing about VirtualDub is its speed and the number of codecs you can use it with. Codecs are nothing but a bunch of code that compress and decompress audio/video files so that they don’t take up too much space. VirtualDub has a few codecs and lot more you can download. We will use the XviD codec to compress the video file.

  1. Start VirtualDub and load the video file you want to compress (File – Open Video File). The video opens in the Timeline of VirtualDub. The Timeline shows you the input and the output videos.

    how do i compress videos to send them by email

  2. On the toolbar, click on Video – Compression. In the Select video compression box, choose the XviD MPEG-4 codec. Click the Configure button.

    how do i compress videos to send them by email

  3. Under Main Settings, you can choose to keep the Profile@ Level setting to the default unrestricted or drill down to Advanced Simple@L5. The latter is recommended for XviD encoding. These settings are about making videos playable on specific devices.

    how do i compress videos to send them by email

  4. The main setting to change though is the Target bitrate. This setting is vital because just like the quality of an image is known by its resolution, the quality of an audio or video file is calculated by the bitrate. The first figure that is displayed is the default for the file you have opened. To compress the video, we have to lower the value. A bitrate of 300-350 is about okay for a web video.
  5. Click on OK to finalize the video settings.
  6. For compressing the audio settings, click on Audio – Full processing mode. Then clicking on Compression takes you to the list of audio codecs. Select MPEG Layer-3 from the list. MP3 is the standard for audio compression and a bitrate of 128 is commonly accepted for satisfactory playback.

    how to compress videos

  7. To start the compression, click on File – Save as AVI. Save the compressed video to a location.

Experiment with the settings for video compression. Compression also brings in blocks of pixels called image artifacts. Quality being subjective, find your balance between quality and file size.

A lot of us consider VirtualDub to be the best, but it is definitely not the only tool you can try out to compress your videos for email.

The others like Avidemux

If you want to look beyond VirtualDub, take a look at Avidemux. This is another free Open Source video editor with the added advantage of being cross-platform. Avidemux has a tool called the Calculator which can calculate compression ratios basing it on a final size.

  1. From File – Open load the video you want to compress. Similar to VirtualDub, you can set your video and audio codec options from the dropdowns.

    how to compress videos

  2. Click on the Configure button for the chosen video codec and use the slider to set a quality.

    compress videos for email

  3. Go to Tools – Calculator. Select Custom from the dropdown for Medium and provide a custom size. Click OK.


  4. A click on Save prompts you to save your project and starts the video compression.

What about Windows Movie Maker?

Windows Movie Maker has a non-geeky way of helping you out with your video compressions. Last year we took a look at How to Easily Compress Video Files for Web with Movie Maker How to Easily Compress Video Files for Web with Movie Maker High-quality videos can take an eternity to upload, especially if they are long. Nobody has time for that. Here's how to use Windows Movie Maker to compress video files for the web. Read More . Follow the post and you can send the movie directly to your email program as an attachment.

Windows Movie Maker is a part of Windows XP and Vista.

Digital video compression is all about getting to know file formats and codecs. To achieve desirable quality results, you have to play around with the settings. Let this quick and dirty guide be just a starting point.

Do you send compressed videos using email? If so which is your compressor of choice?


Related topics: Email Tips, File Compression, Video Editor.

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  1. it now
    December 17, 2016 at 4:18 pm

    Oh my goodness! a amazing post dude. Thank you Even so I will probably be experiencing concern with ur rss . Don’t know why Can not subscribe to it. Will there be any person obtaining identical rss problem? Anybody who knows kindly respond. Thnkx


  2. pbailey
    February 15, 2010 at 1:32 pm

    Does VirtualDub or Avidemux yield better results than a program like FormatFactory or AnyVideo Converter?


    • Saikat
      February 17, 2010 at 10:55 pm

      Hi, Sorry for the late reply. I like VirtualDub, for it's flexibility, speed and portability (1.5MB). I haven't used AnyVideoConverter yet. FormatFactory is ad-supported isn't it?

  3. CZA The CEO
    February 5, 2010 at 6:17 pm

    Great post, you'd be amazed at how many people can use this information. Real. Motivation.

  4. Scott Kingery
    February 5, 2010 at 11:47 am

    Vista and Windows 7 users can get the latest Windows Movie Maker here: [Broken URL Removed]
    It is a huge improvement over previous versions. That is, it is actually useful now.
    Another useful codec for use with VirtualDub on Windows is x264vfw available here: