I checked wikipediaįor uncompressed video format, but that was no help. I can't figure out what format the payload is in. In such a case, you really to parse the individual bits, also the final bits before a frame's data always give the size of bytes required for image extraction. More bits will be used for a larger size image.

Those 4 bytes are only 4 because of total bits required for defining (flags etc) a 100 x 100 image. (c) For all other frames repeat step (b), whereby you : Skip 8 bytes of start code + Skip next following 15 bytes + Extract next 30 000 bytes for image. Followed by 15 skip-able bytes (of which the last one is 30) and you get the 30K of image's RGB data. (b) This leads to another keyframe code: 4E 4B E4 AD EE CA 45 69. (a) First frame skip 4 bytes (should be 00 81 EA 30) + extract the following 30 000 bytes. The short version of this story is (for a 100 x 100 image) is to just skip the next 4 bytes which should be 00 81 EA 30 to get to the 30 000 bytes of RGB data.

It gets tricky cos now you have to check at bit-level not just at byte-level. Then the next following bytes contain Flags and total bytes used for this keyframe (ie: 30000 for a 100 x 100 x 3 image). To be sure this is the keyframes data section, the next following 8 bytes are always set as : Look for a start code sequence like this : nut format as you previously asked.Įach video frame will be classed as a keyframe (since it's an uncompressed full image).įirst find the data section for your keyframes. However if you ever pass that file around, you will have to always include notes with it (such as : expected width, height, framerate etc), otherwise it's a sea of bytes with no idea where to stop per frame.Īs for the.

What is ffmpeg 18