[Ffmpeg-devel-irc] ffmpeg.log.20150803

burek burek021 at gmail.com
Tue Aug 4 02:05:01 CEST 2015


[02:08:04 CEST] <prelude2004c> hello everyone
[02:08:24 CEST] <prelude2004c> i am using ffmpeg with segmenter and the m3u8 files are all segmented correctly and in order
[02:08:41 CEST] <prelude2004c> odd, when we are playing the files via vlc , it jumps around
[02:08:46 CEST] <prelude2004c> anyone know why this could be ?
[02:09:00 CEST] <prelude2004c> could it be file times are applicable ?
[02:09:40 CEST] <prelude2004c> i dont see why that should be lelavent
[02:09:45 CEST] <prelude2004c> relavent*
[02:49:19 CEST] <prelude2004c> anyone?
[03:00:08 CEST] <DHE> lack of replies usually means nobody knows
[03:00:19 CEST] <DHE> I use the ffmpeg hls output format anyway
[03:00:58 CEST] <prelude2004c> you do
[03:01:09 CEST] <prelude2004c> any issues ?
[03:01:35 CEST] <prelude2004c> the stuff is sequenced correcly in the m3u8 .. the odd part is.. i dont now why on the remote server its jumping around all over the place
[03:01:40 CEST] <prelude2004c> that part i dont understand
[04:33:42 CEST] <Craytor> Hello everyone, is anyone on this late at night?
[04:45:34 CEST] <Craytor> If anyone gets this, I currently have ffmpeg set up and it is streaming to twitch. I am trying it with a VNC connection, so I have my monitor/display device set with :1. FFMPEG is streaming and twitch says I'm live, but it is only a black video. Does anyone know how I could get the connection's desktop or at least a firefox window to stream?
[04:46:01 CEST] <Craytor> I'm trying to go ahead and set up a 24/7 weather stream (I have a js web app) to youtube.
[05:33:58 CEST] <prelude2004c> hello anyone around ?
[05:34:06 CEST] <prelude2004c> can anyone tell me a good channel to get some HLS asstance ?
[05:59:11 CEST] <prelude2004c> i am having a problem i can't seem to figure out... i have an index file ( m3u8 ) with 30 segments ( each with 3 second chunks ) .. eg.. file_0000001.ts , ..000002.ts, etc etc ..  for some reason everytime i pull up vlc and try to play the stream .. it starts up near the end or somewhere else but never at the first segment .. i don't undersatnd why. anyone ?
[10:45:40 CEST] <mathieu_> hi
[10:47:11 CEST] <mathieu_> i'm trying to modify the avcodec_decode_video2() method, but i'm running into issues because of the ff_thread_decode() that happens instead
[10:47:20 CEST] <mathieu_> is there anyway to turn the threading off?
[10:48:51 CEST] <JEEB> set the threading off with the related avoption
[11:24:35 CEST] <mathieu_> JEEB, I don't really find anything on that, how does that work?
[13:05:37 CEST] <barneygale> Hi folks. I'm running ffmpeg to record my screen, via x11grab. Is there any way to know when ffmpeg has captured the first frame?
[13:05:43 CEST] <barneygale> programmatically
[14:25:48 CEST] <amol> can anyone tell me what is the return value of 'AVERROR_EOF'.
[14:29:15 CEST] <durandal_170> see source
[14:45:59 CEST] <nyuszika7h> ffmpeg doesn't like special characters in -vf subtitles=
[14:46:10 CEST] <nyuszika7h> like apostrophes, it just pretends they aren't there. I did quote the argument properly
[14:46:18 CEST] <nyuszika7h> worked around by renaming file but it's annoying
[15:47:21 CEST] <frenda> Hey there
[15:49:25 CEST] <frenda> Is it possible to grap a part of video. For example the origin one is 1920x1080, grabing it to 720x480; I don't mean `converting to 720x480`; Like the time you take a snapshop of part of your desktop
[15:52:46 CEST] <RobotsOnDrugs> you mean cropping?
[15:53:10 CEST] <frenda> Ah, exactly
[15:53:33 CEST] <RobotsOnDrugs> yes, there is a crop filter
[15:54:05 CEST] <RobotsOnDrugs> http://ffmpeg.org/ffmpeg-filters.html#crop
[15:57:41 CEST] <frenda> cool
[15:58:58 CEST] <frenda> I'm going to crop a 1920x1080 video. Which size would be the best to be used as a full background of a `coming soon` web template?
[16:11:01 CEST] <prelude2004c> hey, is there some way for ffmpeg to pickup and play a local m3u8 file stream ?
[16:11:15 CEST] <prelude2004c> eg.. i have a bunch of files ( m3u8 stream ) located on the hard drive that is being written in realtime
[16:11:30 CEST] <prelude2004c> i want to playback that into a new format like UDP:// or RTP or RTMP
[16:11:36 CEST] <prelude2004c> what's the best way to do it
[16:18:00 CEST] <well0ne> -c copy then
[17:36:18 CEST] <prelude2004c> hey guys.. any easy way to take an HLS stream and without transcoding it making it info RTP localhost:port
[17:36:35 CEST] <prelude2004c> i want people to pickup teh stream on the server ( they can't pickup HLS ) due to a playback error
[18:01:59 CEST] <ozone89> hello! does anybody know how many fps does -showmode 2 go? I want to a frame every X but don't want to fall short, nor to take too many :)
[18:02:25 CEST] <ozone89> FYI, the line I'm invoking is
[18:02:29 CEST] <ozone89> ffmpeg -v verbose -f lavfi -i "amovie=$1, asplit[out0],showspectrum=s=1920x1080:slide=1,select='not(mod(n,25))'[out1]" -vsync 0 -f image2 test/image-%5d.png
[18:08:50 CEST] <prelude2004c> anyone know the best place to get M3U8 Support ?
[18:31:45 CEST] <shevy> can ffmpeg create simple .wma files?
[18:31:55 CEST] <shevy> like from a .wav file
[18:32:13 CEST] <BtbN> why would you want to use wma?
[18:37:22 CEST] <relaxed> yes
[18:37:51 CEST] <BtbN> to my knowledge wma is horrible and never sounds flawless
[18:41:44 CEST] <ozone89> how do i change the pixels per sample in showspectrum? its result is way more condensed than showmode 2
[18:52:32 CEST] <chungy> there is a lossless variant of wma. by definition it will sound flawless :P
[18:52:44 CEST] <chungy> Though outside of WMP and ffmpeg, you're better off just using FLAC.
[18:53:09 CEST] <JEEB> note: win10 actually plays FLAC
[18:53:31 CEST] <chungy> ffmpeg can only encode the lossy versions of ffmpeg, but it can decode the lossless too
[18:53:46 CEST] <chungy> lossy versions of wma, I meant
[18:54:16 CEST] <JEEB> yes
[19:28:56 CEST] <UKCoder> Hi folks - I'm using ffprobe to analyze an M2TS AV file and I'm getting the following error "[mpegts @ 000000000222f600] PES packet size mismatch". My question is what does the 222f600 relate to?  Is that a byte offset, a PCR, something else?
[19:29:31 CEST] <JEEB> I think that's the memory address of that API thing
[19:29:36 CEST] <JEEB> so not related to the file itself
[19:35:58 CEST] <UKCoder> JEEB : Thanks, is there a way to relate that to file so that I could find out which is the offending PES packet?
[22:02:37 CEST] <Craytor> Hello, is anyone present?
[22:02:39 CEST] <Craytor> If so....
[22:02:48 CEST] <Craytor> I currently have ffmpeg set up and it is streaming to twitch. I am trying it with a VNC connection, so I have my monitor/display device set with :1. FFMPEG is streaming and twitch says I'm live, but it is only a black video. Does anyone know how I could get the connection's desktop or at least a firefox window to stream?
[22:02:53 CEST] <Craytor> 	I'm trying to go ahead and set up a 24/7 weather stream (I have a js web app) to youtube.
[22:29:32 CEST] <spYro_88> hey there :)
[22:30:10 CEST] <spYro_88> Just a question: Anybode here who can help me with FFmpeg (with DTS) on Synology NAS?
[22:58:37 CEST] <ChocolateArmpits> Craytor: Download OBS, it's streamlined for streaming and you can capture monitors/windows/desktop region and stream it https://obsproject.com/
[22:59:12 CEST] <ChocolateArmpits> MultiPlatform is slightly more capable so you can try that
[23:43:02 CEST] <Craytor> ChocolateArmpits: I've tried using obs, but I get an error at launch. This is the launch log: pastebin.com/e92Px23M
[00:00:00 CEST] --- Tue Aug  4 2015


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