[Ffmpeg-devel-irc] ffmpeg.log.20130325

[burek]

[00:18] <ItsMeLenny> hellooo
[00:18] <ItsMeLenny> is there a way to change the fps in a container, in terms of the playback fps
[00:19] <ItsMeLenny> with and/or without recontaining it
[02:57] <ItsMeLenny> is there a way to change a containers frame rate, say i have a file thats 25fps and i want it to play back at 50fps, so its double speed
[03:02] <retard> ItsMeLenny: yes
[03:04] <ItsMeLenny> retard, how would i go about doing that
[03:39] <retard> ItsMeLenny: probably by doing some extremely simple websearches
[03:39] <retard> then using what you've learned
[03:46] <ItsMeLenny> retard, nope
[03:46] <ItsMeLenny> and thanks for the non help
[03:46] <ItsMeLenny> why would i ask if ive found the answer in my many websearches
[04:10] <HACKhalo2> ok, I got this script http://pastebin.com/XrpqEYkf that /should/ stream to justin.tv, and it does. The issue is that it only streams audio
[04:14] <HACKhalo2> and I have no clue why
[04:14] <HACKhalo2> it's using the right X display, the dimentions are right for the screen size
[04:16] <HACKhalo2> ok, now video works
[04:17] <HACKhalo2> apparently -crf 0 blanks the video
[04:17] <HACKhalo2> never mind then
[04:21] <strikeout> hi! can anybody please give me a headsup on how to install ffmpeg with TWO versions of x264, one for 8bit, one for 10bit? :)
[04:21] <strikeout> *on ubuntu 12.04
[09:12] <xlinkz0> i'm trying to compile ffmpeg with freetype and fontconfig on windows with mingw-w64
[09:12] <xlinkz0> and i get this : http://codepad.org/bdbHVVox
[09:13] <xlinkz0> people in the mingw channel say i don't specify the xml lib.. but there's no xml flag for configure
[09:14] <xlinkz0> ubitux, morning :D
[09:19] <ubitux> i didn't touch a windows system since about 10 years
[09:19] <ubitux> so i have no idea what your problem is
[09:22] <xlinkz0> well it's mingw.. which is pretty similar to unix style..
[10:34] <RSDRSDRSD> What is the best method to scale anamorphic videos to 1:1
[10:39] <xlinkz0> ok this is weird, i configure and make and everything finishes ok but the ff tools don't output anything on the terminal stdout
[10:40] <xlinkz0> it's not from the terminal, i've pasted in an 'officially' built ffmpeg variant in the same directory and calling it from the same terminal
[10:40] <xlinkz0> and it outputs text, the one i built doesn't
[10:41] <xlinkz0> this is my config.h http://codepad.org/uimbPKKp
[10:46] <RSDRSDRSD> is there a way to letterbox automatically?
[10:53] <DX099> hello, can someone help me create a script that would convert all files in different subfolders while keeping them in their folder ?
[10:59] <92AAAAGZY> is there a way to convert RTSP VP8/Vorbis to HTTP VP8/Vorbis in Webm container?
[11:05] <RSDRSDRSD> http://pastebin.com/9HnjsvCA is that a good method to get rid of anamorphic video?
[11:05] <RSDRSDRSD> For one video it works, but don know what happens if a video is converted with odd sizes?
[11:25] <92AAAAGZY> is there a way to convert RTSP VP8/Vorbis to HTTP VP8/Vorbis in Webm container?
[11:34] <RSDRSDRSD> someone?
[12:41] <tschoepler> hi everyone
[12:42] <tschoepler> I was wondering if HAP-codec is being implemented in ffmpeg
[12:42] <tschoepler> http://vdmx.vidvox.net/blog/hap
[12:43] <tschoepler> or where can I make a suggestion?
[12:44] <saste> tschoepler, !bugs
[12:44] <saste> iirc there is already a ticket for that feature
[12:44] <saste> !tickets
[12:44] <tschoepler> ah, thanks.
[12:45] <saste> https://ffmpeg.org/trac/ffmpeg
[12:45] <92AAAAGZY> is there a way to convert RTSP VP8/Vorbis to HTTP VP8/Vorbis in Webm container?
[13:01] <RSDRSDRSD> where to find al variables like iw, ow etc ?
[13:01] <RSDRSDRSD> cant find them
[13:02] <ubitux> sounds like filter specific variables
[13:03] <ubitux> http://ffmpeg.org/ffmpeg-filters.html#scale
[13:03] <ubitux> ?
[13:13] <RSDRSDRSD>  if a movie has for example a duration of 300 seconds, how can I make 6 screenshots such that it makes a screen shot every 50 seconds because 300/6=50
[13:13] <RSDRSDRSD> yes was looking for that one, but those variables aren available in the whole commandline do they?
[13:16] <saste> RSDRSDRSD, select=gte(t, selected_n*50)
[13:16] <saste> or something like that
[13:18] <RSDRSDRSD> but the 50 must be variable such that it is duration / n where n is number of screenshots
[13:19] <saste> RSDRSDRSD, then you need some (trivial) scripting
[13:20] <RSDRSDRSD> ok, thanks for that, first i have to get the duration with ffprobe
[13:41] <elkng> to extract subtitles from mkv do one need to built ffmpeg with "--enable-libass" option or there is some other build option ?
[13:43] <JEEB> libass is only needed to render subtitles
[13:43] <JEEB> not extract them
[13:44] <elkng> what is "--enable-gnutls" for ?
[13:44] <elkng> for ffserver ?
[14:15] <bk76> hi
[14:16] <bk76> when trying to screen capture under win7 i got this error "Could not enumerate video devices"
[14:16] <bk76> "video=UScreenCapture: Input/output error"
[14:18] <elkng> why not to use FRAPS ?
[14:18] <elkng> if on win7
[14:18] <bk76> http://pastebin.com/Wcnddud3
[14:18] <bk76> I don't know this program
[14:22] <sacarasc> Fraps is a programme to record ones desktop on Windows. You have to pay for it.
[14:22] <bk76> I would like to use ffmpeg
[14:23] <bk76> I'm useing on Linux
[14:24] <bk76> I just installed FRAPS and now I remember that it is that shitty program that dosen't worked for me well
[14:24] <bk76> and it only records 30sec of video
[14:25] <sacarasc> Unless you pay for it!
[14:25] <bk76> I don't intend to pay for it
[14:26] <bk76> so why ffmpeg is not working?
[14:26] <bk76> there should not be here such advice to use another program insteed
[14:33] <bk76> I'm back
[14:33] <bk76> some uninstaller closed my webchat
[14:33] <bk76> so can anyone help me?
[15:21] <RSDRSDRSD> can someone confirm the following
[15:21] <RSDRSDRSD> if I have scale=iw*sar*min(456/(iw*sar)\,342/ih):ih*min(456/(iw*sar)\,342/ih) for scaling
[15:22] <RSDRSDRSD> do I get in trouble if the iw and ih have odd sizes
[15:22] <RSDRSDRSD> does ffmpeg round it correctly?
[15:28] <elkng> there are same video in two formats        1) "1920x1080 bitrate: 5228 kb/s" and 2) "1280x720 bitrate: 2705 kb/s" ,         if I want to get video "650x365 bitrate: 2000 kb/s" is it matter which one I use ? or they both will look the same in 650x365
[15:28] <elkng>  anyway so I can use second one to convert it faster ?
[15:30] <Yulth> Hi everyone!
[15:30] <durandal_1707> RSDRSDRSD: afaik it is using eval, and that one is using floats, and i don't remember how that one rounds, but there are function in eval for rounding
[15:32] <Yulth> currently for me, option '-map_metadata 0:s:0' only copies the metadata from 'mp3' input files. When input are 'ogg' files, for example, the metadata is ignored
[15:33] <Yulth> any ideas about how to copy the full metadata from input files (regardless on which format they're encoded) to the new encoded files? (currently HE-AAC into MP4 container)
[15:33] <RSDRSDRSD> in some examples i see trunc
[15:34] <RSDRSDRSD> they divide by 2 and then multuply by 2
[15:40] <Yulth> any suggestions?
[15:42] <elkng> http://imagebin.org/index.php?mode=image&id=251557 do they look the same ?
[15:43] <durandal_1707> elkng: no
[15:48] <elkng> I mean one of them was 1920x1080 5228 kb/s initially and another one was 1280x720 2705 kb/s now they are both 650x365 2000 kb/s, are they looks same ? which one is better ?
[15:48] <sacarasc> The top one looked better, less washed out.
[15:49] <sacarasc> But, we're comparing a JPG, which is another lossy encode.
[16:14] <Yulth> Any way to copy all metadata from input file to output file regardless the container of the input file? :S I've tried all combinations, but what works in one container doesn't work in other container...
[17:11] <Yulth> In this pastebin: http://pastebin.com/zr1fuG8A 2 commands are shown to convert both mp3 and ogg to aac. The metadata is correctly stored when the input file is OGG, but nothing is stored when is MP3. Could anybody help me please with this issue?
[17:12] <durandal_1707> mp3 uses id3 and that use special keys
[17:13] <Yulth> and How I can fix it?
[17:16] <durandal_1707> Yulth: actually, mp3->mp4 should work
[17:16] <durandal_1707> does it happen with any mp3?
[17:17] <Yulth> yes
[17:18] <durandal_1707> could you upload mp3 somewhere?
[17:19] <Yulth> some mp3 sample files?
[17:20] <durandal_1707> the ones that do not work
[17:22] <Yulth> ok, let me 1 minute
[17:24] <Yulth> durandal_1707: for example, this one doesn't work
[17:24] <Yulth> durandal_1707: https://mega.co.nz/#!S0hkHKjS!MG7yB3OQVc5GfDqkAULm0BGDaD4d30CdPHHUMXc_hoc
[17:28] <durandal_1707> Yulth: could you uploaded somewhere where flash is not required to download file?
[17:29] <durandal_1707> also you could try same command with latest version
[17:29] <durandal_1707> and if bug still happens report bug on tracker
[17:29] <Yulth> I've installed 'ffmpeg version 1.0.1'
[17:30] <durandal_1707> that is not latest version
[17:30] <Yulth> ams, I understand. This is the latest version on FreeBSD
[17:39] <Yulth> ok I'm going to try it with the latest version. I'll inform of any error if it still persist
[20:29] <NovaSt0rM> is there a fastish reliable way to determine the number of bytes that would be decoded in an audio stream?  using av_read_frame but skipping the actual decode part?
[22:56] <gp> Can ffprobe detect if source is interlaced now that there is the idet filter?
[23:14] <durandal_1707> gp:  no, ffprobe does not run idet filter
[23:15] <gp> durandal_1707: dang. thanks
[00:00] --- Tue Mar 26 2013