[Ffmpeg-devel-irc] ffmpeg.log.20150922

[burek]

[00:12:22 CEST] <llogan> durandal_170: can you give me a hint why yuv420p inputs cause a pink coloring with blend screen?
[00:12:43 CEST] <llogan> ffmpeg -y -f lavfi -i testsrc=d=5:s=512x512,format=yuv420p -f lavfi -i mptestsrc=d=5 -filter_complex "[1:v][0:v]blend" out.mp4
[00:13:40 CEST] <llogan> that's supposed to be blend=all_mode=screen
[00:23:35 CEST] <durandal_170> because those modes works mostly with rgb
[00:56:34 CEST] <llogan> durandal_170: that's wot i assumed (tried rgb first). but the conversion from the filter's gbrp to yuv420p still causes pink unless i put an intermediate rgb24. "...all_mode=screen,format=rgb24,format=yuv420p"
[05:13:39 CEST] <techtopia> o/
[05:14:04 CEST] <techtopia> ffmpeg is going nuts complaining about a subtitle type in my video not being implemented but my video has no subtitles
[05:14:08 CEST] <techtopia> :|
[05:15:31 CEST] <techtopia> http://i.imgur.com/d4NuGBC.jpg
[05:15:39 CEST] <techtopia> still seems to be encoding ok though
[06:33:07 CEST] <relaxed> techtopia: I think CC can be wrapped in the video stream
[06:34:08 CEST] <relaxed> pastebin the output of ffmpeg -i input
[08:40:23 CEST] <techtopia> relaxed http://pastebin.com/R3HUJDYt
[09:43:21 CEST] <commiebird> hello
[09:43:24 CEST] <commiebird> is this chan active?
[09:43:48 CEST] <DeadSix27> now it is
[09:44:19 CEST] <commiebird> ok so i tried to compile the ffmpeg pack and i got a load of errors
[09:44:25 CEST] <commiebird> can someone help me to compile it
[09:44:30 CEST] <commiebird> im on deb 7
[09:45:07 CEST] <DeadSix27> is it a Cross compilation?
[09:45:49 CEST] <commiebird> i dont think so
[09:45:57 CEST] <commiebird> its "clean"
[09:46:07 CEST] <commiebird> by clean i meant i converted it from crunchbang to deb
[09:46:07 CEST] <DeadSix27> well seems like you dont know what i mean so nvm
[09:46:13 CEST] <commiebird> http://pastebin.com/LSzk2HBL
[14:34:27 CEST] <lilibox_> hi
[14:34:41 CEST] <lilibox_> does the latest ffmpeg fully support prores 444?
[14:39:02 CEST] <DHE> in h264? I'm pretty sure it does
[14:44:07 CEST] <DelphiWorld> hi all
[14:44:17 CEST] <DelphiWorld> what size i could ofer to smartphone for a live stream?
[14:44:18 CEST] <DelphiWorld> sd
[14:44:41 CEST] <DelphiWorld> c_14 *2= c_28 ;)
[14:45:19 CEST] <DHE> resolutions, bitrates, or what?
[14:45:34 CEST] <DelphiWorld> DHE: resolution & br
[14:45:43 CEST] <DelphiWorld> DHE: i'm encoding in H.264 baseline
[14:46:45 CEST] <DHE> If you expect users to be "bandwidth impaired" so to speak (eg: on cellular data) then 1 megabit video at 480p will probably be a good starting point for experimentation.
[14:47:00 CEST] <DHE> but do experiment. what your video is will affect your decisions. talking faces vs sports action, etc.
[14:47:20 CEST] <DelphiWorld> DHE: its mostly wlan, but CPU is more important
[14:47:24 CEST] <DelphiWorld> i mean the server cpu
[14:47:27 CEST] <DelphiWorld> see my command:
[14:48:03 CEST] <DelphiWorld> exec_static /usr/bin/ffmpeg -i http://192.168.1.4:5107/bysid/12900 -r 29.97 -s 640x360 -c:v libx264 -vb 1000k -profile:v baseline -level 3.0 -c:a libfdk_aac -ab 64k -f flv rtmp://localhost/live/tv8;
[14:57:20 CEST] <DelphiWorld> DHE ?
[14:58:21 CEST] <DHE> you probably want -preset:v veryfast
[14:58:29 CEST] <DHE> or something to that effect
[14:58:54 CEST] <DelphiWorld> what's the default preset?
[14:59:19 CEST] <DHE> 'medium'
[14:59:26 CEST] <DelphiWorld> thx
[17:00:02 CEST] <ParkerR_> Who would I talk to about a possible GPL violation involving ffmpeg (possible violation by Nikon) I didn't see a direct contact email on the ffmpeg website
[17:18:19 CEST] <IntelRNG> The website really needs clear contact information, I have seen variations of this question more than once.
[17:22:37 CEST] <c_14> ParkerR_: make an issue on trac
[21:25:53 CEST] <waressearcher2> is anyone here ?
[21:26:25 CEST] <DHE> no
[21:27:01 CEST] <waressearcher2> I used that command to join audio and video, and I want to start from first 40 seconds so I use that command: "ffmpeg -ss 40 -i in.avi -i in.wav -c copy -map 0:v:0 -map 1:a:0 -shortest -y -f avi out.avi" but it looks like now audio and video desynchronised for 40 seconds, what I did wrong ?
[21:27:42 CEST] <DHE> apply the seek to both inputs
[21:30:30 CEST] <waressearcher2> is anyone here ?
[21:31:27 CEST] <DHE> ...
[21:37:26 CEST] <cbsrobot_> waressearcher2: what DHE said
[21:42:03 CEST] <waressearcher2> DHE: thanks
[22:23:51 CEST] <gentwo> how do i filter a results for ffprobe?
[22:24:38 CEST] <c_14> https://ffmpeg.org/ffprobe.html#Main-options
[22:24:46 CEST] <c_14> all the things with -show_ or -select_
[22:29:11 CEST] <gentwo> c_14: thanks...
[23:08:51 CEST] <gentwo> c_14:  i am confused with the commands there..
[23:09:01 CEST] <c_14> What are you trying to do?
[23:09:05 CEST] <gentwo> 4.2 compact, csv
[23:09:56 CEST] <gentwo> c_14:  all i need is i have some directory and just need to check the files in it using ffprobe.. if the file is not mpeg2 just to identify
[23:14:30 CEST] <c_14> Which part?
[23:14:43 CEST] <gentwo> just the video stream 1
[23:15:08 CEST] <gentwo> specific format of a clip, like mpeg or h264
[23:15:42 CEST] <c_14> ffprobe -select_streams v -show_entries stream=codec_name -of csv spin.mkv
[23:15:44 CEST] <c_14> probably
[23:16:20 CEST] <c_14> ffprobe -select_streams v -show_entries stream=codec_name -of csv=p=0 spin.mkv; even
[23:16:41 CEST] <gentwo> this will print out the codec name to a file right?
[23:17:03 CEST] <c_14> to stdout
[23:18:01 CEST] <gentwo> just to the monitor.. sorry if i am not explained well
[23:18:27 CEST] <c_14> to wherever stdout goes
[23:18:32 CEST] <c_14> you can redirect it wherever you want
[23:21:00 CEST] <gentwo> whats cvs=p=0 does?
[23:21:39 CEST] <c_14> just trims the amount of information it outputs
[23:22:01 CEST] <gentwo> still it prints all of it..
[23:22:11 CEST] <c_14> Ignore everything on stderr
[23:22:22 CEST] <c_14> add -loglevel quiet
[23:22:27 CEST] <c_14> all that stuff up there is just noise
[23:22:40 CEST] <c_14> It's all on stderr anyways
[23:22:52 CEST] <gentwo> all i need is the stdout of codec
[23:23:46 CEST] <gentwo> thats better
[23:24:01 CEST] <jasom> I'm trying to edit out parts of a video (so not anything nonlinear), the best solution I have so far is to do something like select='0-gt(t,123.690002)*lt(t,670.786987)-gt(t,822.322021)*lt(t,1178.526978)-gt(t,1405.620972)...' is there a better way?
[23:24:40 CEST] <gentwo> c_14: sorry if i am asking too much... can you suggest me  a way to scan a folder with this option?
[23:25:21 CEST] <c_14> find . -exec or find . -print0 | xargs -0
[23:25:45 CEST] <gentwo> c_14:  is that for me?
[23:25:49 CEST] <c_14> gentwo: yes
[23:26:10 CEST] <c_14> jasom: not really, you could use trim and concat but both are very meh
[23:26:57 CEST] <jasom> c_14: yeah I tried that first and there was much meh all around
[23:27:24 CEST] <jasom> c_14: I ended up recording an edl with mplayer and wrote an awk script to generate the select string from that
[23:31:49 CEST] <gentwo> ffprobe -select_streams v -show_entries stream=codec_name -of csv=p=0 spin.mkv output the codec,, can we add name of the clip information along with it?
[23:31:52 CEST] <gentwo> c_14:
[23:31:58 CEST] <gentwo> c_14: ^
[23:33:27 CEST] <c_14> -show_entries format=filename
[23:35:52 CEST] <gentwo> ffprobe -loglevel quiet -select_streams v -show_entries stream=codec_name format=filename -of csv=p=0 spin.mkv?
[23:36:02 CEST] <c_14> No, add an extra -show_entries
[23:36:26 CEST] <c_14> Or separate them with ':'
[23:39:10 CEST] <gentwo> c_14: interesting.. it does give the results of folder tree too. if i need just the filename?
[23:40:53 CEST] <c_14> Not that I know of. Might have to call something like basename on it
[23:41:54 CEST] <gentwo> as you said earlier, i should run this as a script in a directory using find??
[23:42:07 CEST] <c_14> something along those lines, yes
[23:43:51 CEST] <gentwo> so far we have given a proper filename to ffprob.. do u think its possible to search in direcotry and probe to each and every individual file?
[23:44:16 CEST] <gentwo> c_14:  thanks for the help today.. learned something today ..
[23:44:58 CEST] <c_14> gentwo: only  with the help of some sort of scripting language
[00:00:00 CEST] --- Wed Sep 23 2015