It will save time for you when you want to convert MP4 to PNG in batch if you take MP4 to PNG Batch Converter as the helper, the work will be done in a short while. Because MP4 to PNG Batch Converter supports many MP4 video files to PNG image files in batch.

The application is free for downloading and evaluating by clicking here. If you want to use all functions without any limitations, you can buy a single-user personal license for it via clicking here or buy single-user commercial license, multi-user personal license or multi-user commercial license at the website. It is up to your needs.

You can see the user interface (UI) of MP4 to PNG Batch Converter in Figure1, in which there is a video file list in the middle. You can add image files in the list by clicking "Add Video File(s)" button or dragging the files from the disks into the list. "Remove" button is used to remove or delete some video file, while "Remove All" is for removing all the MP4 files at a time. The button "Preview Video" button below the list is used to preview each video file with the own player of the application. Then you should click "Options" button to set parameters to all the output image files.

Please see Figure2, it is "Option" dialog box in which you can realize important functions.
1.In "Start (Sec)" and "End (Sec)" spin boxes, you can set the start and end time in the batch conversion of MP4 to PNG. To be more specific, you can convert a part of video to image files with MP4 to PNG Batch Converter.
2.In "Size (1 to 6000)" spin box, you can specify the image resolution by setting width and height.
3.You can set a high or a low quality for output image files in "Quality: (0.01 to 255)" spin box.
4.There are several output file formats in "File Format" combo box and please choose "Portable Network Graphics (*.png)" here.
5.In "Interval (Sec)" spin box, you can control the number of output images by setting the capture interval.

Please click "OK" button to close the dialog box and click "Convert" button in Figure1 to open "Browse for Folder" dialog box in which you can choose an existed or create a new folder for the output files. Then click "OK" button to run the conversion.
A green progress bar at the bottom of Figure1 will give you the conversion progress. It will be empty again when the conversion is over.