VideoMach - Frequently Asked Questions

Can't open more than 1500 images at once!
It's a known Windows bug that exists for more than 20 years.
VideoMach offers several workarounds:

  • Automatic image sequence detection: If you are opening a sequence of images (for example: pic01.jpg, pic02.jpg, pic03.jpg, ...) then open just ONE of the images that belongs to the sequence. Do not multiselect, do not use Ctrl or Shift, open just one image and VideoMach will automatically find entire sequence for you. VideoMach has successfully open 250,000 images from a single folder in one of our tests.

  • Add Entire Folder: If you're opening non-numerated images then click File => Add Entire Folder and select the folder containing your files. It will open all the images in the folder (but not the subfolders for now).

  • Drag'n'Drop: In Windows Explorer (or Free Commander or whichever file explorer you normally use) select the images and drag them to VideoMach. It's important that you move them by dragging the FIRST image, otherwise the file explorer may send them in the wrong order.
After merging 10 files, audio and video are out of sync. Why?
There are probably slight differences in duration of audio and video. For example, the audio can be only 0.05 seconds longer than video, which doesn't sound like much, but if you stack 10 such videos the differences will add up.

To see the video and audio duration press F5. This will display the file information, where you can see "Video duration" and "Audio duration" lines. The difference in duration shouldn't be more than 2 milliseconds (0.002 seconds). If the difference is bigger then select those files, click on "Edit" => "In/Out Points" => "Sync Audio-Video Length".
Where do I download additional codecs?
For file formats that VideoMach doesn't support directly you can usually install additional Windows codecs. One of the best codec packs is K-Lite MEGA Codec Pack. "MEGA" means that it contains encoding codecs too (for writing files):

Download K-Lite MEGA Codec Pack

After downloading you must run (double-click) the package to install the codecs.
Does VideoMach contain any toolbars or adware?
No. The original package is completely free of any malware. But you must download it from ( Other sites may add custom installers, toolbars and downloaders.
Why do I get "Installation package corrupt or incomplete" message?
VideoMach installer displays the above message in the following cases:
  1. If you didn't download the file completely (download was interrupted). Try downloading VideoMach again.
  2. If your computer was infected by a virus. First clean your computer with an antivirus, such as Avira Free Antivirus, then download VideoMach again.
  3. If your copy of VideoMach is not genuine. Cracked versions usually contain spyware, trojans and viruses.

VideoMach can be downloaded from:

How to upgrade VideoMach license?
Install the latest version of VideoMach, then enter your old license key. If it's necessary to upgrade, VideoMach will provide you with more details.
Does VideoMach support lossless compression (100% uncompressed quality)?
Yes, there are several lossless formats and codecs available in VideoMach:
  • AVI, Uncompressed, built-in
  • AVI, Lagarith codec, fast, external, download it here
  • AVI, MSU codec, good compression, external, download it here
  • HAV, (Gromada HAV), built-in
I need automated conversions without human interaction.
Use the command-line parameters. For more details click here.
VideoMach doesn't accept the frame rate I enter.
This happens when you're saving to MPEG using a frame rate that isn't supported. MPEG supports only a few predefined frame rates. These are: 23.98, 24.00, 25.00, 29.97, 30.00, 50.00, 59.94 and 60.00 fps. Other values (such as 15 fps) aren't supported by the standard.

You can still speed up or slow down your video using this workaround: Select the file you wish to slow down (or speed up) and click "File" => "Speed and Direction". To slow the video down enter a lower frame rate (say 15 fps) in the "Input Frame Rate" box. To speed it up enter a higher frame rate (say 120 fps). This won't change the output frame rate, but VideoMach will duplicate (or drop) frames to slow down (speed up) your video.
Why is AVI picture skewed?
Some external AVI codecs (such as DivX) have trouble encoding picture sizes that aren't a multiple of 4. For example, if your picture size is 1111x600 pixels, some codecs may fail because the picture width isn't divisible by 4. To fix this add the Resize filter (menu "Video Filters" => "Add" => "Adjust Size and Geometry" => "Resize") and in the edit box named "Make resolution divisible by" enter 4.
When saving to AVI I get the "Bad Format" error.
Some codecs pretend they can handle large images (say, 4000 x 4000 pixels), but when they receive such an image they crash. You can try using a codec that returns proper capability information, such as XVID.
Why is the video quality so low?
Probably because the video bit rate is too low. Click "File" => "Save As" => "Video" (tab) => "Codec Settings" and choose a higher data rate.
Why is the output file so big?
Output file size mostly depends on the video codec, video data rate and video resolution. When you click "File" => "Save As" => "Video" => "Codec Settings" you can choose the codec and video data rate. Lower bit rates will produce smaller output files. Also, if the codec is selectable (e.g. for AVI files) choose one of the MPEG-4 based codecs, such as XVID or DIVX.
What is "Mach" in "VideoMach"?
Mach is the speed of sound in air, named after Austrian physicist Ernst Mach. When a plane breaks the sound barrier that's slightly faster* than Mach One. A rocket traveling at Mach 5 is moving 5 times faster than sound.

*correction by Ralph Croning: the plane has to fly slightly faster than sound to break the sound barrier.