There are several approaches you can use to further reduce the size of a video file. Use a more efficient codec. If the video is MPEG-2, switch to H.264/AVC or H.265/HEVC. This can reduce the size by 50% or more while keeping the quality the same. Reduce the number of pixels. With less data to encode, the output file can be smaller. Of course, this loses some image detail. Reduce the bit rate that the codec is allowed to use during encoding. Of course, this will cause it to discard information that it would have kept at a higher bit rate. You do need to realize that your video is already highly compressed. If I were to shoot 90 minutes of HD video with my camcorder, I would get an output file of approximately 20 GB, which is already highly compressed. By re-encoding it with a better codec, in variable bit rate mode, in non-real-time, I can reduce that to about 5 GB without much effect on image quality. At that size, the average bit rate of the video is about 7.5 Mbps. Reducing the size any further, I can start to see the loss of detail - and this is for video from a low-cost consumer camera. Another reference. DVDs are standard definition video, with 720 x 480 pixels (in NTSC countries). A one-layer DVD stores 4.7 GB maximum, and most DVD movies fit within that. So ~5 GB of data is enough to store a movie with high quality, but at SD resolution. In comparison, your 40 MB video has an average bit rate of about 60 kbps. It already must be very low quality compared with a DVD. You want to compress it down to 10 MB. There is no way to do that without a substantial additional reduction in image quality. Do you really need to reduce it to 10 MB? The last time I looked, 2 TB disk drives were less than $100.
It's only a small download and there is nothing extra. The only thing you will need is your free trial to use iTunes. Once you install the plug-in, iTunes will start automatically saving your songs to your computer, but you can also manually start iTunes and change the preference for “Save Files to Computer”. It's that simple! There is more information than is required, but it should give you some idea what to expect from Audacity. All in all there are many, many reasons for downloading this plug-in... but if they are things you need them for then the answer is yes! If you are new to free software development and would like to learn more, then here is some information... I created Audacity for free software development in 2005 and made it available under the GNU General Public License which you can find at the following link : The GNU GPL license is.