When using ?start=secs with nginx mp4, video doesn't play for about 8 seconds although the audio keep playing well. example: http ://server/video.mp4 >>> plays correctly http ://server/video.mp4?end=60 >>> plays correctly http ://server/video.mp4?start=120 >>> starts audio playing with static image (video not working) for about 7-8 seconds. I tried many MP4 files, all of them show first 7-8 seconds without video. All files have moov atom at beginning. Seems like nginx don't get the starting video frame correctly, any advice?