[Ffmpeg-devel-irc] ffmpeg.log.20141008

[burek]

[00:09] <Wader8> btw c_14 - im just dealing with ffmpeg.exe no other SDK  / programming stuff ...
[00:09] <Wader8> about that -ss > -to thingy
[00:47] <Wader8> by the way, im on windows
[00:48] <Wader8> i hope there's no some diff editions in zeranoe or linux .etc
[01:13] <Marcin_PL> Hello again& How can I force ffmpeg to work with mjpegs? On my best tries I got messed colors.
[01:15] <Marcin_PL> I even tried produce raw video in mencoder (huh, it plays, so I think it's right done), and redirect it to ffmpeg, but it cannot determine format.
[01:17] <Marcin_PL> I got often wrong bits/per/pixel on input
[02:07] <voip_> guys, We are transcoding live streams with ffmpeg. Special program checks Linux processes (ps), and restarting ffmpeg instances.
[02:07] <voip_> Often after several hours we have ffmpeg pid's state Sl, but in fact ffmpeg stops transcoding
[02:07] <voip_> How to solve this issue ?
[02:44] <pentanol> voip_ what version ffmpeg you use? And those streams are from v4l or network?
[02:45] <voip_> pentanol, its ffmpeg version N-63378-g1d36def  , streams from network
[03:30] <Guest64509> Hi guys
[03:30] <Guest64509> I am currently having a problem with taking screen recordings
[03:31] <Guest64509> When I select a region that is not small, I get the error...
[03:32] <Guest64509> ffmpeg version N-66595-g1c4c78e Copyright (c) 2000-2014 the FFmpeg developers   built on Oct  3 2014 22:10:13 with gcc 4.9.1 (GCC)   configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme
[03:32] <Guest64509> --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx26
[03:32] <Guest64509> --enable-libxvid --enable-zlib
[03:33] <Guest64509> libavutil      54.  9.100 / 54.  9.100   libavcodec     56.  2.101 / 56.  2.101   libavformat    56.  7.104 / 56.  7.104   libavdevice    56.  1.100 / 56.  1.100   libavfilter     5.  1.102 /  5.  1.102   libswscale      3.  1.100 /  3.  1.100   libswresample   1.  1.100 /  1.  1.100   libpostproc    53.  1.100 / 53.  1.100 [gdigrab @ 0000000004258a40] Capture area (164,368),(1898,1152) extends outside window area (0,0),(1414,796)
[03:33] <c_14> Please use a pastebin service.
[03:33] <c_14> Also, pastebin your command as well as the output.
[03:34] <Guest64509> I'm sorry for my ignorance.  Could you point me somewhere on how to use the pastebin service?
[03:38] <Guest64509> Ah great.  Thanks for the information.  Here is the link for the pastebin.  http://pastebin.com/UrW5cbVS
[03:38] <hendry> Guest64509: i think ffcast is used to select a region https://github.com/lolilolicon/FFcast/
[03:39] <sacarasc> Guest64509: What about the command?
[03:39] <Guest64509> Sorry again.  What is the best way to see the command that I am trying to run?
[03:39] <Guest64509> I just configure the program to take a screen capture recording.
[03:39] <sacarasc> What program?
[03:41] <Guest64509> Sorry, it's sharex.
[03:49] <c_14> You might want to take up your problem with them then since I don't know what/how it's executing in the background.
[03:57] <Guest64509> Yeah, I tried to do that, and they were like ask these guys.  I was thinking it was probably part of the sharex team.  Maybe I will ask them again.  Thanks for your help.
[03:58] <c_14> You can always try using ffmpeg directly to record your screen: https://trac.ffmpeg.org/wiki/Capture/Desktop
[04:00] <hendry> who is cehoyos ?
[04:34] <joules> hi, I'm required to dump some NTSC @ highquality, anyone recommend a HQ capture card? (component)
[05:18] <Lankarb> hi ,is it possible to reuse the buffer in AVFrame and after the decode loop with avcodec_decode_video2 or avcodec_decode_audio4, manually free the buffer?
[06:55] <hungnv> hi guys, I am using transcoding.c example from ffmpeg doc/example, modify it a little bit to transcoding with libx264, and the result is input video has duration 8 seconds, output is 16 second without sound
[06:56] <hungnv> is there any special option and anything else's I can use to debug
[11:37] <Wader8> C_14 the trac is here https://trac.ffmpeg.org/ticket/4015#ticket
[12:20] <vadmeste> Hello everybody. As I understood, RTSP could use 554/UDP port, does someone think that ffmpeg support that ?
[13:04] <c_14> vadmeste: tried setting rtsp_transport to udp and setting the port to 554? ie -rtsp_transport udp rtsp://<hostname>:554/<path> ?
[13:07] <vadmeste> c_14: yes.. but according to tcpdump, it will still use tcp/554 at the beginning
[13:09] <c_14> Using those options it uses tcp first and then switches to udp?
[13:12] <vadmeste> yes.. by the way, I am using debian stable, maybe ffmpeg is old
[13:18] <JoshX_> Hello, Small question.. so far i've only found a patch which would mean i would need to recompile ffmpeg myself and i don't really want a custom version, but does ffmpeg support a filename pattern which would include date/time in the format 20141008_131714004 (yyyymmd_ hhmmssfff) while using the segmentation options where the filename would include the start time of the segment?
[13:19] <JoshX_> that would basically solve all my recording needs :)
[13:30] <DeadSix27> is there a filter in ffmpeg to produce a simple centered text for a couple seconds?
[13:31] <Amnesia> question, everytime I use ffmpeg's concat I lose audio, how can I prevent this?
[13:31] <DeadSix27> note, not on top of a existing video, i mean generate a new video
[13:32] <Amnesia> I'm using: ffmpeg -f concat -i f  output.mkv, and f contains paths to multiple mkv files that have been encoded from a dvd to x264
[13:35] <Wader8> i had some ISP difficulties, did you get the message c_14 ?
[13:39] <Wader8> anyways the ticket for error at timecode seek mismatch is here - making it a reality would be appreciated thanks https://trac.ffmpeg.org/ticket/4015
[13:56] <xcile> Hi there. I'm trying to build ffmpeg for Windows on Ubuntu. I have succeeded this earlier, but when I try to build using the --enable-libfreetype I get the error "ERROR: freetype2 not found". I have installed the package libfreetype6-dev using apt-get. I have also tried to set env variables to have the linker find freetype2..
[13:56] <xcile> The tail from config.log is: check_oc
[13:56] <xcile> BEGIN /tmp/ffconf.IzJD6bQV.m
[13:56] <xcile>     1 #include <AVFoundation/AVFoundation.h>
[13:56] <xcile>     2 int main(void) { return 0; }
[13:56] <xcile> END /tmp/ffconf.IzJD6bQV.m
[13:56] <xcile> i686-w64-mingw32-gcc -Werror=missing-prototypes -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1 -D__printf__=__gnu_printf__ -I/usr/include/freetype2 -std=c99 -fomit-frame-pointer -c -o /tmp/ffconf.4mgYfDvE.o /tmp/ffconf.IzJD6bQV.m
[13:56] <xcile> i686-w64-mingw32-gcc: error trying to exec 'cc1obj': execvp: No such file or directory
[13:56] <xcile> require_libfreetype
[13:56] <xcile> false --exists --print-errors freetype2
[13:56] <xcile> ERROR: freetype2 not found
[14:00] <DeadSix27> xcile did you follow zeranoes instructions?
[14:01] <xcile> I have followed instructions from different sources. Is there any specific you are referring to?
[14:02] <DeadSix27> https://trac.ffmpeg.org/wiki/CompilationGuide/CrossCompilingForWindows
[14:02] <DeadSix27> -> https://github.com/rdp/ffmpeg-windows-build-helpers
[14:02] <DeadSix27> not even sure if zera did that
[14:02] <DeadSix27> guess not
[14:02] <DeadSix27> but i followed that, back then
[14:02] <DeadSix27> its rather easy with that if youre unexperienced
[14:03] <DeadSix27> does most for you.
[14:04] <xcile> DeadSix27, I don't think the issue is cross-compile related, but rather that I have basic *nix build knowledge. I'm not sure how to instruct the linker where to find the object files and header files from freetype..
[14:05] <DeadSix27> ah. well me neither. But insepecting the command lines, the paths and how the libs are compiled in that build helper
[14:05] <DeadSix27> might help you.
[14:06] <xcile> yes, I guess you're right. I'll have a look
[14:07] <DeadSix27> otherwise wait for frit... or so, they're rather skilled
[14:07] <DeadSix27> fritsch* he isnt on atm)
[14:07] <xcile> ok, thanks
[14:16] <DelphiWorld> sup guys
[14:16] <DelphiWorld> what's the ffmpeg repository?
[14:17] <sacarasc> git://source.ffmpeg.org/ffmpeg.git
[14:17] <DelphiWorld> thank, sacarasc !
[14:17] <spaam> DelphiWorld: https://ffmpeg.org/download.html on the right side on the page
[14:17] <spaam> sacarasc: :D
[14:18] <DelphiWorld> lol spaam
[14:18] <sacarasc> Why spaam no answer on bnet? :D
[14:18] <spaam> sacarasc: becuase i started bnet at home this time and not at work
[14:19] <spaam> sacarasc: but i played some destiny at work today.
[14:19] <spaam> sacarasc: on playstation4
[14:20] <sacarasc> Did you get to play with the loot cave before it was patched?
[14:20] <DelphiWorld> stupid question
[14:20] <spaam> sacarasc: no. i have only played it 10min or so :(
[14:20] <DelphiWorld> anyone know a rtmp restreaming cdn?
[14:24] <DelphiWorld> anyone have a high quality .wav source in the net?
[15:23] <M37h0s> GoodMorning! if someone can help me, the filter silence detect in a totally silenced video just mark the start of a silence at the beggining of the video, but does not show any end of the silence, any ideas??
[15:43] <vadmeste> Looks like ffmpeg doesn't support RTSPU, is that true?
[17:23] <zenny> Hi, I am trying to overlay an image (A.png) and a small sized video (C.mp4) on top of another video (C.mp4) on a 1080p canvas only using ffmpeg. However both videos need resized to say 480p the first video and 720p the second one. I am trying to figure out a single line command to achieve this with ffmpeg. Any hints?
[17:24] <zenny> @keptsin-laptop: Thanks for your past inputs, very useful! ;D
[17:33] <kepstin-laptop> zenny: that's certainly doable, but it'll be a fairly complex use of the -filter_complex option
[17:35] <kepstin-laptop> it basically means something like using the 'color' filter to make the 1080p canvas, running each input video through a scale filter, then a bunch of overlay filters in sequence to combine them
[17:40] <kepstin-laptop> (alternately, you can do something fun like find a nice 1080p wallpaper and use that as a background image instead of the color filter)
[19:16] <c_14> Wader8: I've sent a patch to the mailing list. Should only be a matter of time now.
[19:33] <zenny> kepstin-laptop: thanks for the input. But I am going to use a screencast on the background (reduced size).
[20:00] <Mic___> Hi all...I am trying to find the best way to contact any of the official developers of ffmpeg. I am a student doing a case study on the software and had some questions. Can anyone help?
[20:01] <c_14> Try #ffmpeg-devel or the mailing lists.
[20:01] <c_14> "official" developers is pretty vague though
[20:06] <jasom> Mic___: in general, I find the mailing list to be the best way to contact developers of any OSS project.
[20:07] <Mic___> Thanks c_14. I guess what I meant by official developer was someone part of the internal development team who might review code changes by contributors and has the authority to commit them. Someone who would have insight into decision making and management of this project.
[20:08] <Mic___> Ok. I will try the mailing lists Jasom. Thanks.
[20:21] <Wader8> ok thanks!
[22:24] <zenny> Hi: trying to subtract background from a video as follows: ffmpeg -report -y -i Video.mp4 -i BACKGROUND.jpgg -filter_complex '[1:v]format=yuva444p,lut=c3=128,negate[video2withAlpha],[0:v][video2withAlpha]overlay[out]' -map [out] BS-VIDEO.mp4. But the final BS-VIDEO.mp4 does not seem to have been sutracted. Any hints?
[22:26] <kepstin-laptop> zenny: you want to use the blend filter, not overlay
[22:27] <kepstin-laptop> blend has built-inf support for difference, so you don't need to devate the image or anything first.
[22:27] <kepstin-laptop> don't need to negate the image*
[22:34] <zenny> kepstin-laptop: thanks for input. Shall be grateful if you can hint me how to use in the situation like above?
[22:34] <kepstin-laptop> zenny: you should be able to figure it out from the filter docs; I think you just need to set all_mode appropriately.
[22:44] <zenny> kepstin-laptop: Tried with this: ffmpeg -report -y -i Video.mp4 -i BACKGROUND.jpg -filter_complex '[1:v]format=yuva444p,lut=c3=128[video2withAlpha],[0:v][video2withAlpha]blend[out]' -map [out] BS-VIDEO.mp4 but got error "First input link top parameters (size 1320x1080, SAR 1:1) do not match the corresponding second input link bottom parameters (1320x1080, SAR 0:1). Failed to configure output pad on Parsed_blend_2"
[22:46] <polysics_> Hello!
[22:46] <kepstin-laptop> huh, weird. You can always just use a setsar=sar=1:1 on the offending video input to override it.
[22:46] <polysics_> I am trying to rotate an overlay image but the solid backround does not disappear with c=none
[22:47] <polysics_> Is that possible or did I read the filter wrong?
[22:49] <polysics_> c=red works, none does not
[22:50] <polysics_> As a corollary, Imust use the image2 demuxer to do watermark fade in and out, correct?
[23:03] <zenny> kepstin-laptop: thanks. shall try and let you know. Thanks again!
[23:56] <xebra> hi, isn't it possible to have static builds with x11grab enabled? The one I downloaded (some time ago) didn't have it, and on the internet I read that others had trouble including that option
[00:00] --- Thu Oct  9 2014