On Tue, Nov 17, 2015 at 03:06:27PM -0800, Zach Swena wrote: > Hi Pavel, > > I can confirm that there is a problem with the UDP packet engine in > FFmpeg. FFmpeg has excessive jitter in it's UDP streaming output to the > point where hardware decoders can't handle it. My solution was to buffer > to disk and have my own program read and send the datagrams via a very > tight event loop. While increasing the PCR period is not a bad thing, > FFmpeg really should stream at a more consistant rate. Can someone explain > the theory behind how the UDP rate control is currently implemented in > FFmpeg? PCR sounds like a good way to tell when to send a packet, except > not every packet contains one. If FFmpeg uses PCR to tell how long to wait > to send a packet, then do the packets in between go at line speed? I plan > on taking a look at the code that does this, but I would really appreciate > it if someone who knows the code could explain the theory as I usually deal > with a slightly different dev setup.
i suggest you read the mpeg specs, they detail when things should be sent down to each byte IIRC also IIRC its not that complicated, more like timestamp + bytepos/rate [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB I know you won't believe me, but the highest form of Human Excellence is to question oneself and others. -- Socrates
signature.asc
Description: Digital signature
_______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
