Thanks Ross, this brings up several questions (since I am mainly integrating this into a product as opposed to being an expert).
- Wouldn't we see this problem on all 30 seconds videos, not just starting at file 8 and above (very reproducible)? - What is the typical frame rate vs I-frame interval that most people use (if there is a "typical")? - Is there any way to get openRTSP to spit out additional debug data during operation - I did not see this in the docs? - Is see various mp4 inspectors, is there one that you would recommend that might specifically point to a particular problem? Thanks much, Bill -----Original Message----- From: live-devel [mailto:[email protected]] On Behalf Of Ross Finlayson Sent: Thursday, August 23, 2018 3:44 PM To: LIVE555 Streaming Media - development & use <[email protected]> Subject: Re: [Live-devel] MP4 Video Startup Issue The problem here is probably that the stream from your camera is not including I-frames (i.e., ‘key’ frames, consisting of complete pictures) often enough. The captured MP4 file won’t be able to show anything until it sees the first (complete) I-frame. So, I suggest decreasing the “I-frame interval” in each stream that you want to capture. Another thing to keep in mind is that these streams will be very sensitive to network packet loss. Each I-frame will take up many RTP packets, and if even one of these RTP packets gets lost on the network, the whole I-frame will be unusable. So, you might also want to play around with decreasing your stream’s bit rate. Ross Finlayson Live Networks, Inc. http://www.live555.com/ _______________________________________________ live-devel mailing list [email protected] http://lists.live555.com/mailman/listinfo/live-devel _______________________________________________ live-devel mailing list [email protected] http://lists.live555.com/mailman/listinfo/live-devel
