[Ffmpeg-devel-irc] ffmpeg.log.20150916

[burek]

[00:00:01 CEST] <t4nk303> -i $(cat file) - it is unix command, as I understand
[00:01:19 CEST] <t4nk303> But this is not work:
[00:01:20 CEST] <t4nk303> ffmpeg -i < command.txt -c copy output.mpg
[00:01:41 CEST] <t4nk303> command.txt = "concat:00000.Mts|00001.Mts"
[00:02:23 CEST] <iive> i don't think ffmpeg takes commands from text files...
[00:02:56 CEST] <c_14> iive: Neither do I. The problem is, his line is too long so it throws errors if he tries executing it.
[00:04:55 CEST] <durandal_1707> -filter-script or something like that
[00:05:09 CEST] <c_14> Doesn't that only work for filter complexes?
[00:05:51 CEST] <durandal_1707> Use concat demuxer
[00:07:47 CEST] <t4nk303> It gives me errors with my MTS.
[00:15:29 CEST] <iive> t4nk303: your syntax is wrong...  '<' is bash command, at that point ffmpeg options list ends... everything after that is ... syntax error
[00:17:09 CEST] <t4nk303> But could You please write the right syntax. Because I can not find it in Internet.
[00:22:05 CEST] <t4nk303> Or it is impossible to do it in concat file level, And I have to divide all my 10000 files by 5 parts, and after that join them?
[00:24:49 CEST] <iive> <c_14> -f concat -i list.txt
[00:25:12 CEST] <iive> `ffmpeg -f concat -i command.txt -c copy output.mpg`
[00:25:19 CEST] <iive> try that
[00:28:11 CEST] <t4nk303> But it will be Concat demuxer
[00:42:46 CEST] <iive> t4nk303: it concats files
[00:42:57 CEST] <iive> just do it.
[00:43:44 CEST] <t4nk303> and command.txt = file '/path/to/file1'`nfile '/path/to/file2'`nfile '/path/to/file3'
[00:43:47 CEST] <t4nk303> ?
[00:44:13 CEST] <c_14> Those `n are supposed to be \n ie newlines
[00:45:45 CEST] <t4nk303> yes. I did it. And audio was out of sync because of some timestamps errors.
[00:46:34 CEST] <llogan> "git clone git://git.opus-codec.org/opus.git" anyone else get Connection reset by peer?
[00:46:57 CEST] <c_14> yep
[00:47:18 CEST] <llogan> thanks for checking
[01:40:23 CEST] <LuisM> hi guys, could somebody help with this encoding? I need to encode the first video (window) with the second one specs http://s29.postimg.org/siti7zed3/Especifica_o_dos_videos.png
[01:40:43 CEST] <LuisM> what do you suggest would be probably command?
[01:41:36 CEST] <LuisM> i mean, options*
[01:45:08 CEST] <LuisM> ?
[01:48:46 CEST] <sine0_> how can i dump the video and keep the audio? i thought it was -vn -acodec copy
[01:50:32 CEST] <klaxa> sine0_: it is
[01:53:18 CEST] <LuisM> could be "ffmpeg -i Input.mts -f dvd -target ntsc-dvd -r 29.97 -s 720×480 -aspect 16:9 -b 8000kb -g 12 -mbd rd -trellis -mv0 -cmp 0 -subcmp 2 output.mpg" ?
[01:53:33 CEST] <LuisM> to convert any mts to my desired .mpg file?
[04:11:15 CEST] <Chagall1> Fontconfig error: Cannot load default config file
[04:11:56 CEST] <Chagall1> on the zeranoe ffmpeg build, only on some files, how come?
[04:12:47 CEST] <Chagall1> maybe because there are no fonts attached to the file?
[05:42:11 CEST] <dioo> Hi, trying to use flameeyes' unpaper with ffmpeg 2.6.3 and for some reason after a call to avcodec_decode_video2(), AVFrame->format is AV_PIX_FMT_NONE
[06:53:24 CEST] <pinPoint> anyone know whether one can stream a tv signal from an antenna on a computer to the internet?
[07:28:34 CEST] <lilibox_> hi
[07:29:10 CEST] <lilibox_> does exist chance to get relative pretty old ffmpeg build from svn repo?
[07:31:31 CEST] <lilibox_> especialy r17733 there is missing content of on directory :(
[07:32:00 CEST] <lilibox_> libswscale is its name
[10:12:38 CEST] <sid_> can anyone spot an issue with my command?
[10:12:39 CEST] <sid_> ffmpeg i park-2.png -i greenstartwars.mp4 -filter_complex "[1:v]colorkey=00ff1f:0.3:0.2[ckout];[0:v][ckout]overlay[out]" -map "[out] output.flv
[10:13:22 CEST] <BtbN> You're missing a -
[10:13:46 CEST] <BtbN> If that's just a copy/paste error, you'll have to be more specific.
[10:14:32 CEST] <sid_> i added the dash and got the same result. basically it just drops into a new line with ">"
[10:14:54 CEST] <BtbN> That's your shell, not ffmpeg.
[10:15:34 CEST] <akae_> sid_
[10:15:43 CEST] <sid_> im trying to replace the green screen in greenstarwars.mp4 on top of a picture
[10:16:04 CEST] <sid_> hmm im using ssh, is that what you mean.
[10:16:11 CEST] <sid_> @akae
[10:16:58 CEST] <BtbN> Your shell seems to think you're still entering your command. So you didn't close some " or something like that.
[10:17:29 CEST] <sid_> i was thinking something along those lines too but i checked my command and didnt think about the terminal
[10:17:47 CEST] <BtbN> looking at the last ", it's not a ", but some fancy version of it.
[10:17:59 CEST] <akae> yep
[10:18:15 CEST] <akae> c&p issues, sure
[10:18:47 CEST] <BtbN> Also, colorkey is not ideal for YUV video processing, as it operates on RGB colors.
[10:19:01 CEST] <BtbN> I haven't got to writing the YUV chromakey filter yet.
[10:19:41 CEST] <BtbN> Also, it's going to be very slow. As it converts YUV to RGB, then filters(which is already slow by itself), and then back to YUV.
[10:21:18 CEST] <sid_> ahhh
[10:21:20 CEST] <sid_> makes sense
[10:21:52 CEST] <sid_> how would you do it BtbN ?
[10:22:28 CEST] <BtbN> There currently is no other way in ffmpeg.
[10:27:36 CEST] <durandal_1707> so go write chromakey
[10:41:32 CEST] <akae> can anybody point a howto about compiling ffmpeg with Intel QSV capabilities under Ubuntu ?
[10:45:42 CEST] <sid_> @BtbN it work!! kinda.... it only exported a really small clip maybe a frame or 2 any ideas what can cause that?
[10:46:39 CEST] <BtbN> Your png image is only one frame. So it's done after that one frame.
[10:47:09 CEST] <BtbN> There is some option to loop an input, but i forgot which one it is.
[10:50:02 CEST] <sid_> -loop 1 -i input.png -t 30
[10:50:07 CEST] <sid_> thank you sir
[10:50:12 CEST] <sid_> testing again
[10:52:01 CEST] <sid_> ive emailed a couple developers that are listed on the website but i havent received a response. is there any freelancers in here?
[14:15:15 CEST] <dentex> Hi
[14:15:27 CEST] <dentex> just a quick question.
[14:15:52 CEST] <dentex> can FFmpeg be built for android x64 CPUs?
[14:16:03 CEST] <dentex> thanks
[14:18:41 CEST] <Mavrik> Which arch?
[14:21:09 CEST] <dentex> arm
[14:22:02 CEST] <dentex> CPU: arm64-v8a
[14:22:31 CEST] <dentex> is this that you were asking? :)
[14:30:29 CEST] <Mavrik> Android supports 3 different 64-bit architectures.
[14:30:43 CEST] <Mavrik> No idea if it compiles for arm64 though, it does for x86_64
[14:38:44 CEST] <dentex> thank you very much
[14:39:20 CEST] <Mavrik> dentex, just remember that arm64-v8a can load and run armeabi-v7a binaries
[14:39:31 CEST] <Mavrik> and ARMv7 does build fine :)
[14:39:48 CEST] <dentex> oook!
[14:41:08 CEST] <JEEB> check fate.ffmpeg.org for a listing
[14:41:21 CEST] <JEEB> of what architectures and operating systems are officially tested
[14:43:03 CEST] <dentex> great! thanks again
[15:13:41 CEST] <anddam> hello, what's the    -c:s mov_text    at http://stackoverflow.com/a/17584272/434206 ?
[15:14:26 CEST] <anddam> I couldn't find it in man page, it should be a codec for the subtitle stream
[15:17:55 CEST] <anddam> ah nvm, https://en.wikibooks.org/wiki/FFMPEG_An_Intermediate_Guide/subtitle_options
[15:19:54 CEST] <andrelec1> hello, i have a little school projet with ffmpeg...
[15:21:02 CEST] <andrelec1> but i can't ...   my IDE say  ffmpeg/swscale.h is missing !
[15:40:23 CEST] <anddam> andrelec1: add it to your inclusion path
[15:43:05 CEST] <anddam> andrelec1: and that's without aving any clue about what you are doing
[16:01:26 CEST] <andrelec1> already add ffmpeg path in my inlusion path
[16:03:38 CEST] <andrelec1> humm i try some think , the include file working now
[16:04:55 CEST] <andrelec1> but  i can call av_register_all(); -_-"
[16:29:52 CEST] <andrelec1> can'yt
[16:29:55 CEST] <andrelec1> can't*
[16:56:13 CEST] <fred1807> Do all TV sets and monitor with a HDMI port, suport the input of 1080p via HDMI ? (even if the device downscale internally) ?   Or some may not show any image at all
[16:56:42 CEST] <BtbN> Our 720p TV only supports 1080i input.
[16:57:04 CEST] <BtbN> Which looks horrible, so there is no reason to send more than it natively supports.
[16:59:39 CEST] <fred1807> hmm, I know it is offtopic, but I am creating a raspberry pi video presenter, and I have the option to fix the hdmi output resolution, I was wondering if there could be problems with setting to 1080p, because without a fixed resolution on boot/kernel, it can only but turned on After the tv set (to get the supported formats from edid file), and while this shoulnd be a problem, it leads to errors and complain when other people that know know this trys to u
[16:59:40 CEST] <fred1807> the device
[17:27:50 CEST] <C0nundrum> what up with ffmpeg wiki ?
[17:30:36 CEST] <C0nundrum> How do i make it so that if a video file exist, it appends to it ?
[21:06:25 CEST] <fred1807> how do I strip the audio track of a mp4 movie, generating a new.mp4 file, without audio track?
[21:07:42 CEST] <c_14> -an
[21:09:55 CEST] <llogan> probably also want -c copy
[21:16:02 CEST] <fred1807> ffmpeg -i exampe.mp4 -an -c exapmle_no_audotrack.mp4 ?
[21:22:59 CEST] <fritsch> -an -v copy
[21:24:21 CEST] <BtbN> -c
[21:33:18 CEST] <fred1807> -v or -c ?
[21:33:30 CEST] <JEEB> -c
[21:33:34 CEST] <JEEB> you set -c to copy
[21:33:36 CEST] <JEEB> -c copy
[21:33:50 CEST] <fred1807> -c alone, or "-c copy"  ?
[21:34:00 CEST] <JEEB> -c requires a parameter
[21:34:05 CEST] <JEEB> you set the parameter copy to -c
[21:34:09 CEST] <JEEB> thus -c copy
[21:34:23 CEST] <JEEB> -c sets the encoder after -i, and decoder before -i
[21:34:32 CEST] <JEEB> a kind of a misnomer, but "codec"
[21:35:40 CEST] <fred1807> nice
[21:36:07 CEST] <llogan> to add more to the confusion, you could alternatively use the alias "-codec copy".
[21:36:29 CEST] <llogan> if that makes more sense for you
[21:36:31 CEST] <JEEB> generally the short-hand is used because it's shorter
[21:37:39 CEST] <votz> To those knowledgeable of H.264: which ffmpeg/x264 parameters affect the H.264 stream's SPS log2_max_pic_order_cnt_lsb_minus4 variable? Two videos' SPS NALUs need to match for concatenation.
[00:00:00 CEST] --- Thu Sep 17 2015