File with WEBM contains multimedia data as a Matroska container. The format was developed with support from Google in 2010 as a free, open format for internet-related purposes.
After converting the file to the new format, you will be able to use other programs to support it. Keep in mind, however, that the WEBM file after converting to H263 may differ slightly from the original. The most important information should be kept, but if you want the file after conversion from WEBM to H263 to be the same, you have to do this carefully and choose the proper application from the list below.
There is no guarantee, of course, that the conversion will come up to all your expectations, but it will certainly help you. If, after all, the effect of converting WEBM to H263 does not meet your expectations, you can simply try to find on the Internet a different version of your file in WEBM format, properly converted to a H263 file by someone else. If this fails, use the information provided in the further part of the website.
If after converting the file WEBM the desired result was not achieved, you can try to change the format of WEBM file to other than H263. On our website you will find more information on the following conversion options
Unfortunately, if after performing the two previously described steps (trying to find your WEBM file converted by someone else, and the attempt to convert it to H263 on your own) you still have a problem with your file, then there are only a few solutions left. You can once again try to find and install an application that can open the WEBM file in its original format (without conversion to H263 file). Such a solution will be difficult to implement, but it certainly will give the best result.