Steevo25 0 Posted January 10, 2007 Still new to the CCTV arena but learning fast. Just trying to understand the differences between MPEG4 compression format and MJPEG. Is one really noitceably better than the other. I understand that MPEG4 is a much smaller file size but have also read that MJPEG produces a better quality image. Looking at the DVRs on the market it always seems that MJPEG recorders have a smaller recording resolution when recording on a per camera basis. All the MPEG4 ones I have seen go to something like 700x576 ( or there abouts ) but the MJPEG specify recording resolutions such as 700x288 ( or there abouts ). Does this mean that the quality of a MJPEG DVR is offset by the smaller resolution and it produces smaller images even if the camera can support a higher resolution. And now, JPEG2000 seems to be on the scene. Share this post Link to post Share on other sites
galen 0 Posted January 10, 2007 Yep, the manufacters have their own name for it. Jpeg, Mpeg4, H264, Wavelet. Mpeg2000, take your pick, each one has its pro's and con's. Digital recorders compress and store images to a computer hard drive using various compression techniques. These techniques include JPEG, MPEG, Wavelet and a host of other proprietary methods. Images can be stored at a rate of 20 frames per second (fps) to as many as 480fps depending on the software features offered by the manufacturer. MPEG is a video compression method commonly used in digital recording. MPEG-1 is a standard for CD-ROM video and audio. MPEG-2 is a standard for full-screen, broadcast quality video. MPEG-4 is a standard for video telephony. Share this post Link to post Share on other sites
kelvin 0 Posted January 11, 2007 Please do correct me if im wrong... MJPEG - picture format - bigger file size - great for system which is not real time recording MPEG4 - video format - smaller file size - great for system which is real-time recording Share this post Link to post Share on other sites
