[Ffmpeg-devel-irc] ffmpeg.log.20160910

[burek]

[00:18:26 CEST] <jackley> hey y'all, having a bit of trouble getting ffmpeg to compile on Mac OS. opus is installed, I can see it living in my /usr/local/lib/pkconfig/ directory, but it seems like pkg-config can't see opus.pc
[00:18:27 CEST] <jackley> https://gist.githubusercontent.com/mighteejim/179c5a04bc36752b2d0ea4a3929c86f4/raw/9844c8ad706a689a27cc5035a4d4059dea461dac/gistfile1.txt
[00:18:39 CEST] <jackley> any pointers would be appreciated
[00:19:16 CEST] <c_14> PKG_CONFIG_PATH=/usr/local/lib/pkgconfig ./configure ?
[00:19:36 CEST] <c_14> Oh, it is
[00:19:55 CEST] <c_14> can you upload the last 50 or so lines of config.log ?
[00:20:01 CEST] <jackley> yup, sec
[00:20:56 CEST] <jackley> oh, interesting, when I did 'PKG_CONFIG_PATH=/usr/local/lib/pkgconfig ./configure' in one line, it worked
[00:21:30 CEST] <c_14> Did you ever export PKG_CONFIG_PATH ?
[00:21:46 CEST] <jackley> yup, that was the first step, but obviously I was doing something wrong
[00:22:48 CEST] <jackley> c_14: thanks for the assist!
[01:43:49 CEST] <example6> Hi all. I'm trying to use ffmpeg to stream RTSP/H.264 video from an IP camera on my network. I noticed that there was about a 3 second delay when using ffmpeg compared to streaming from the camera's web interface. When I added the -fflags nobuffer and set a small -probesize, I noticed near-identical difference between the two. However, after a while, the ffmpeg stream seems to slow down (as if it's decoding each frame).
[01:44:34 CEST] <example6> I'm now looking at the -vsync option, which seems it may provide some help, but when I try inserting that into my command I'm getting "Failed to set value '0' for option 'vsync': Option not found"
[01:45:24 CEST] <example6> Do I have to add this option along with another one? Does it need to go in a specific place? The command I'm currently using is http://pastebin.com/H7FPqCuw
[01:48:01 CEST] <c_14> I don't think vsync is a valid ffplay option
[01:48:54 CEST] <example6> That's what I was thinking, but I couldn't find a clear distinction of arguments available for ffmpeg/ffplay
[01:51:27 CEST] <c_14> afaik everything in ffmpeg(1) should be ffmpeg only everything in ffplay(1) should be ffplay only and general/input options in ffmpeg-*(1) should be available for both
[02:55:51 CEST] <Enverex> Ok, so using x11grab in ffmpeg is still causing black tearing lines down the screen even when using vsync, a compositor and/or the nvidia ForceFullCompositing... etc, line.
[02:56:01 CEST] <Enverex> Any ideas how else to fix it so this doesn't happen?
[02:56:15 CEST] <Enverex> It -looks- fine on the machine, it's just in the recorded footage that it happens
[04:54:52 CEST] <kepstin> Enverex: nvidia proprietary drivers?
[04:55:16 CEST] <kepstin> if so - at this point, you should be complaining to nvidia, nothing the open source side can do about it.
[04:55:52 CEST] <kepstin> you could consider using an hdmi/dvi capture device rather than attempting to do it within X.
[06:45:53 CEST] <etyrnal> feature-request/idea: it would be SO cool, for the sake of the MANY VARIOUS media players out there, to be able to create a profile, by pointing ffmpeg to a media file with a ?--discover-create-profile" sort of command.  Something like $ffmpeg --create-profile-from-media <media-file.avi> <profile-name>.  It could have a silent, and a verbose mode.  In verbose, it could first show you the info it discovers, then ask you if you want to create a profil
[06:45:53 CEST] <etyrnal> e with the provided name and the discovered media type parameters (in case you only wanted to see what the params are).  The resulting action would be that ffmpeg would discover all the inputted media-file.avi file?s parameters, and create a profile with those output settings.  So, if you have a media file that is KNOWN to play on a  device, you could just have ffmpeg create a profile based off of it,  (or tell you it cannot, and why).  Then in the
[06:45:54 CEST] <etyrnal> future it would be easier/faster to convert files for a target device with less experimentation needed.  I LOVE this idea.
[17:07:53 CEST] <deadplant_> Hey folks, could someone show me an example of an interactive command to the crop filter?  i can't seem to make it work.
[17:08:00 CEST] <deadplant_> i started ffmpeg with this crop filter    -filter:v "crop=100:100:0:0"
[17:08:05 CEST] <deadplant_> then I hit "c" while it's running and enter "crop -1 x 200" attempting to modify the crop settings...
[17:08:11 CEST] <deadplant_> All I get in response is  "Command reply for stream 0: ret:-38 res:"   and no change in the video output.
[17:08:17 CEST] <deadplant_> what am I doing wrong?
[17:12:20 CEST] <durandal_170> you  can't change crop size, yet
[17:13:40 CEST] <deadplant_> ah ok, nor the x/y crop positions?
[17:14:04 CEST] <Spring> you can do this with ffplay + a script
[17:14:36 CEST] <durandal_170> x, y can be changed, dunno if crop filter have commands, see documentation
[17:15:38 CEST] <Spring> the idea would be you'd use an input prompt to set a value, store it to a variable, preview the values with ffplay, then ask if the user wants to redo
[17:16:42 CEST] <deadplant_> the docs say yes.  I was trying to change the x position of the crop with that command
[20:34:27 CEST] <kode54> APNG is a compulsive liar who cannot make up their mind about which age they want to be, which actually matters when all of those ages are of minority and they're trying to hang out in channels where unsafe links are regularly swapped around freely
[20:49:50 CEST] <strongcoffee> k
[20:53:09 CEST] <KDDLB> just letting you guys know
[20:53:34 CEST] <furq> i always thought the issue was that he's an insufferable piece of shit
[21:03:47 CEST] <Fuchs> could we please not? Thank you :)
[21:35:23 CEST] <durandal_170> furq: who?
[21:36:13 CEST] <furq> kode54's buddy
[22:35:34 CEST] <Enverex> kepstin: That's expensive and fiddly and far from ideal
[23:18:16 CEST] <APNG> what's the status on ffmpeg's APNG support?
[23:31:13 CEST] <Enverex> APNG: Your name makes it seem like you'd be in a better position to answer that...
[23:38:52 CEST] <durandal_170> APNG: encoder and decoder are available
[23:53:39 CEST] <strongcoffee> huh, wasn't aware of that. What about webp?
[00:00:00 CEST] --- Sun Sep 11 2016