You may use fragmented MP4. A fragmented MP4 file is built a follows: moov [moof mdat]+ The moov box then only contains basic information about the tracks (how many, their type , codec initialization and so on) but no information about the samples in the track. The information about sample locations and sample sizes is … Read more
The command ffmpeg -ss 00:00:25 -t 00:00:00.04 -i YOURMOVIE.MP4 -r 25.0 YOURIMAGE%4d.jpg will extract frames beginning at second 25 [-ss 00:00:25] stopping after 0.04 second [-t 00:00:00.04] reading from input file YOURMOVIE.MP4 using only 25.0 frames per second, i. e. one frame every 1/25 seconds [-r 25.0] as JPEG images with the names YOURIMAGE%04d.jpg, where … Read more
Peace of cake! 1. Get the data As I can see, you already know how to do that (start RTSP session, SETUP a RTP/AVP/UDP;unicast; transport, and get user datagrams)… but if you are in doubt, ask. No matter the transport (UDP or TCP) the data format is mainly the same: RTP data: [RTP Header – … Read more
H.264 is a new standard for video compression which has more advanced compression methods than the basic MPEG-4 compression. One of the advantages of H.264 is the high compression rate. It is about 1.5 to 2 times more efficient than MPEG-4 encoding. This high compression rate makes it possible to record more information on the … Read more