FredB 0 Posted February 21, 2005 http://www.apple.com/mpeg4/h264faq.html Wonder when it will be a standard in DVR's? Share this post Link to post Share on other sites
rory 0 Posted February 21, 2005 yeah but then ... "...Just as MPEG-1 and MPEG-2 are still used in the industry today, MPEG-4 Part 2 will continue to be used. You will use MPEG-4 Part 2 anywhere you want to be compatible with MPEG-4 Part 2 devices or players, such as the millions of 3G mobile phones and digital still cameras that capture and play back MPEG-4 Part 2 video..." but i know what you mean ... Share this post Link to post Share on other sites
VJD 0 Posted February 21, 2005 I believe HIKVISION uses it. Share this post Link to post Share on other sites
MetzLyov 0 Posted February 21, 2005 GE recently showed their version of MPEG-4 DVRs... They are in process to move all their DVR line to this new technology. I was impressed with the video quality (in playback of course) and its use of much smaller file size than they used before. In GE's case, they are using a newer chip and newer bios algorithm to make this work... MPEG-4 is not a new technology, however for the security market it is... Utilizing this type of compression, it will be less expensive to manufacture thus, their overall DVR pricing will be lower... They should have this techonology DVRs available after March 1st! Share this post Link to post Share on other sites
cctvexpert 0 Posted February 21, 2005 More interesting reading on the new standards. http://www.hikvisionusa.com/technology/ http://www.hikvisionusa.com/manuals/h264_overview.pdf great white paper. The 264 is the new ITU/ISO standard and it is DSP not ASIC. Therefore all the processing is done at chip level. So all encoding is done without intervention of the CPU. Do not see MPEG4 (Part 2) competing with this standard. That is how they can do 64 channels in real time at 30 frames per second with fully sync audio and you can have multiple channels of D1 (4CIF). This is used by the major videoconferencing companies. Also since it is DSP there are no mosaic issues as you don't bang the processor. Share this post Link to post Share on other sites
cctvron 0 Posted February 22, 2005 There is a compression chart on the following website. ATV uses MPEG-4 Compression check it out compared to other brands. www.4ademo.com click on manufacturers, cctv, atv and scroll down you can't miss it. Share this post Link to post Share on other sites
cctvexpert 0 Posted February 22, 2005 Charts are just that, charts. You have to use the products. There are too many factors that go into these hard drive calculators. Just saying X frames per second and this is the file size is misleading. What is the bitrate, etc. Many factors that can turn a packet from 0.5k to 15k. Then is it I frame or P frame or average frame. How much motion is there since more motion will skew the numbers and lack of motion will show almost nothing on P frame. Share this post Link to post Share on other sites
