[Ffmpeg-devel-irc] ffmpeg.log.20140710

[burek]

[00:38] <derek_> does wowza use ffmpeg for encoding?
[00:43] <c_14> I don't think so but I wouldn't know. You might want to ask wowza.
[01:39] <Freakshow> derek_: no, wowza does not use ffmpeg for encoding
[02:17] <benlieb> I know I can take a frame "shot" at a given time in a movie and get an image. Can I got the other way around? If an image was taken in this manner, is it possible to somehow find the time code it was taken from?
[02:18] <benlieb> The reason is that I have 2000+ image thumbnails that were made this way about 5 years ago, but they are now too small. I'd like to get bigger ones, but the timecode information has been lost in the sands of time.
[02:18] <c_14> Unless the timecode was added as metadata or burnt into the frame, no.
[02:18] <benlieb> the moment in the video is obviously really important.
[02:18] <benlieb> c_14: is there no way to combine some tools and do a frame by frame analysis?
[02:19] <c_14> I think you might be able to do that, but it will be time and cpu intensive.
[02:20] <benlieb> any chance ffmpeg includes or you know off the top of your head a tool that when supplied with 2 images provides a "similarity score", or something similar
[02:20] <benlieb> ?
[02:26] <benlieb> c_14: the linux forum recommends http://www.imagemagick.org/script/compare.php
[02:28] <c_14> Yeah, I don't think ffmpeg currently has a filter that allows you to compare two frames for similarity. Your best bet might be to extract images from the video and then use an external tool to compare them.
[02:29] <benlieb> c_14: that's the only thing I can think of. Currently I'm thinking of reducing the video to a pretty small size, and the thumbnail  too, because that would seem to require less cpu, and would probably still be relatively reliable.
[02:30] <c_14> That should probably work.
[02:31] <benlieb> The imagemagick compare isn't obvious quite yet.
[07:18] <anshul> I have mpeg4(by qt) file which has 32 sample but 33 frames, in stts table i have 31 entry, 1 entry with count 2.
[07:18] <anshul> What would be delta time when there are 2 frames in 1 sample
[07:44] <Dark-knight> pb
[07:50] <Dark-knight> can somebody tell me which of these is the correct script to use?
[07:50] <Dark-knight> http://pastebin.com/gzYbH164
[07:51] <Dark-knight> im trying to make a batch script to convert .mkv to mp4
[08:19] <Dark-knight> hello?
[08:20] <relaxed> looking
[08:21] <Dark-knight> thanks
[08:21] <relaxed> Dark-knight: why do you need mp4?
[08:21] <Dark-knight> btw hey relaxed
[08:21] <Dark-knight> ltnc
[08:21] <relaxed> hi
[08:22] <Dark-knight> i need mp4 for my bros ps3
[08:22] <relaxed> there's probably no script that will deal with all cases.
[08:23] <Dark-knight> ya ya i know. you told me before
[08:23] <Dark-knight> i just want a batch that will convert all the videos in the folder to mp4
[08:23] <derek_> how can I verify a ts segment begins with a video key frame?
[08:23] <relaxed> for i in *.mkv; do ffmpeg -i "$i" -map 0 -c copy "${i%.*}".mpv; done
[08:24] <relaxed> er, for i in *.mkv; do ffmpeg -i "$i" -map 0 -c copy "${i%.*}".mp4; done
[08:24] <Dark-knight> i still have our last conversation logged because i look at it for notes
[08:25] <Dark-knight> im not really worried about the actual command line. i just want to know which batch script will work.
[08:25] <Dark-knight> oh wait...
[08:25] <Dark-knight> nvm.
[08:26] <Dark-knight> sometimes im slow
[08:26] <Dark-knight> so all the other ones where wrong?
[08:28] <relaxed> needlessly long
[08:29] <Dark-knight> ok, thanks man.
[08:29] <Dark-knight> I know i can always count on you
[08:29] <Dark-knight> lol
[08:53] <Dark-knight> ok i must be dum or some shit because i can't figure out how to use the batch file
[08:53] <Dark-knight> i copyed and pasted the line you gave me and i put it in a .bat file and it didn't do anything
[08:53] <Dark-knight> relaxed
[09:07] <relaxed> oh, you're on Windows?
[09:32] <Dark-knight> yes
[09:41] <Dark-knight> i did it the old way I usually convert the videos, by editing the commands and name in the .bat file
[09:41] <Dark-knight> relaxed
[09:41] <Dark-knight> it gave me this error
[09:42] <Dark-knight> http://pastebin.com/gCtWcJ6G
[09:43] <Dark-knight> this is the command that i used
[09:43] <Dark-knight> ffmpeg -i input.mkv -c:v copy -c:a alac -c:s mov_text output.mp4
[09:53] <Dark-knight> in the pastebin line 38, 41 and line 58.
[09:53] <sfan5> Dark-knight: mp4 does not seem to support ALAC
[09:54] <sfan5> try FLAC
[09:54] <Dark-knight> i was told by someone in the channel that it did
[09:54] <Dark-knight> this*
[09:54] <sfan5> ffmpeg said it doesnt..
[09:54] <Dark-knight> i see that
[09:54] <JEEBsv> uhh
[09:54] <Dark-knight> does mp4 support FLAC?
[09:54] <JEEBsv> ALAC is supported in MP4 (more or less, apple addition), FLAC definitely not
[09:55] <Dark-knight> then how come i couldn't use ALAC with the mp4 container
[09:55] <Dark-knight> ?
[09:55] <sfan5> maybe you need to pass -strict experimental or something like that because it is no longer a standard .mp4 file
[09:55] <Dark-knight> will that decrease quality?
[09:56] <sfan5> no
[09:56] <JEEBsv> hmm, try changing the output extension to m4a
[09:56] <Dark-knight> i need mp4
[09:56] <JEEBsv> it is mp4
[09:56] <Dark-knight> its the only thing that ps3 takes
[09:56] <JEEBsv> you can rename the file later to mp4 if you want :P
[09:56] <JEEBsv> that said, I'm pretty sure PS3 doesn't take ALAC
[09:56] <Dark-knight> haha alright
[09:57] <Dark-knight> as long as it is a mp4 file it will be read
[09:57] <JEEBsv> suuure...
[09:57] <JEEBsv> because a container isn't a box that can contain a lot of stuff :P
[09:57] <JEEBsv> you can test of course, but I'm pretty sure the PS3 does not support ALAC
[09:57] <Dark-knight> well what are the command perimeters that i would use?
[09:58] <JEEBsv> encode to AAC or so
[09:58] <JEEBsv> -c:a aac -b:a 192k -strict experimental
[09:58] <JEEBsv> (192k should be enough for stereo)
[09:58] <Dark-knight> that decreases quality
[09:59] <JEEBsv> uh-huh
[09:59] <JEEBsv> I'm pretty sure you wouldn't be able to note the change
[10:00] <JEEBsv> even with the internal lavc encoder with 192k
[10:00] <JEEBsv> I think the only way you get lossless with PS3 is if you mux into m2ts (192 byte packet MPEG-TS) and use raw PCM audio
[10:00] <JEEBsv> and that gets big
[10:01] <Dark-knight> or just a large ass wav file
[10:01] <JEEBsv> which is what raw PCM audio is :P WAV is a container, basically
[10:01] <JEEBsv> anyways, no idea if ffmpeg can create such m2ts files that you need
[10:01] <JEEBsv> you can try :P But I'd just use AAC and be done with it
[10:02] <Dark-knight> alright :?
[10:02] <Dark-knight> alright :/*
[10:06] <Dark-knight> wait... would i need the -strict experimental if im using aac?
[10:06] <Dark-knight> i don't think its necessary
[10:14] <JEEBsv> Dark-knight: if you are using the lavc encoder, it is necessary (vo-aacenc that is redistributable doesn't need it, but is worse than lavc)
[10:14] <JEEBsv> if you have built your ffmpeg yourself and have fdk-aac, then of course you don't need it
[10:16] <Dark-knight> what is the error at line 38?
[10:16] <Dark-knight> http://pastebin.com/LPhaMkpv
[10:16] <Dark-knight> im using the Zeranoe build
[10:30] <Dark-knight> hahaha changing mp4 to m4a and then renaming it to mp4 worked
[10:30] <Dark-knight> but the subtitles were not the same font
[10:30] <Dark-knight> what do?
[10:32] <Dark-knight> i probably should have put -map 0 in there
[10:34] <Dark-knight> but wouldn't -map 0 conflict with me trying to change the audio into ALAC?
[10:44] <sfan5> -map 0 would try to copy the attachment into the .mp4 file
[10:44] <sfan5> .mp4 does not support attachments
[10:44] <sfan5> so that would fail anyway
[10:44] <Dark-knight> so my subtitles will never have a font in mp4?
[10:45] <sfan5> yes
[10:45] <Dark-knight> :(
[10:45] <Dark-knight> oh well
[10:45] <Dark-knight> doesn't really matter
[10:46] <Dark-knight> is there a particular reason ffmpeg doesn't want to change the FLAC audio in my mkv file to ALAC in the mp4 file?
[10:49] <Dark-knight> keeps saying codec not currently supported
[10:49] <Dark-knight> with is bullshit
[10:50] <Dark-knight> which*
[10:53] <montecfel> Is there a way to specify for ffmpeg that you want the bitrate to be constant, but you don't want to set it yourself? Rather, you want it to pick whatever is the maximum bitrate, for the entire clip?
[10:53] <montecfel> Just so that the resulting file is CBR.
[10:53] <montecfel> And not VBR.
[10:56] <sfan5> https://ffmpeg.org/ffmpeg.html#Video-and-Audio-file-format-conversion
[10:57] <sfan5> "To force CBR video output:" ...
[10:57] <sfan5> try the arguments listed there
[10:58] <Dark-knight> line 40
[10:59] <Dark-knight> http://pastebin.com/CaYs3MBe
[10:59] <Dark-knight> why is it giving me that error?
[11:09] <Dark-knight> apparently ffmpeg does not know to store the alac into the .mp4
[11:09] <Dark-knight> will that be fixed in the next update of FFmpeg?
[11:09] <Dark-knight> can somebody file an error report?
[11:10] <Dark-knight> or a ticket
[11:27] <montecfel> sfan5: That doesn't apply at all.
[11:27] <montecfel> It uses a fixed god damn value.
[11:28] <montecfel> That you have to manually specify.
[11:28] <montecfel> I need it to do this without sitting around like a slave and manually doing what the computer should be doing.
[11:28] <montecfel> Figuring out that value alone I would have no idea how to do.
[12:06] <Dark-knight> seriously though. could someone make a bug report about ffmpeg not storing alac into .mp4
[12:14] <montecfel> Sigh.
[12:15] <montecfel> I hate this world...
[12:16] <Dark-knight> i had to wait 4 hours once to get a responce
[12:16] <Dark-knight> be patiant
[12:21] <durandal_1707> Dark-knight: do you have sample with alac in mp4?
[12:21] <Dark-knight> no i have a 7 min .mkv video with FLAC audio
[12:22] <Dark-knight> i tried to convert to .mp4 with alac audio and ffmpeg said it couldnt
[12:23] <durandal_1707> because only .mov can have it
[12:24] <Dark-knight> i actually managed to get the file i wanted by converting to m4a and then renaming it to mp4
[12:24] <Dark-knight> no incorrect
[12:24] <durandal_1707> mp4 cant have alac
[12:24] <Dark-knight> mp4 can have alac audio
[12:24] <Dark-knight> yes it can
[12:24] <Dark-knight> i have the working file to prove it
[12:25] <durandal_1707> renaming m4a to mp4 is not actually producing mp4 file
[12:25] <Dark-knight> it has video and audio and subtitles
[12:26] <durandal_1707> you said you do not have mp4 with alac
[12:26] <durandal_1707> only one fake - renamed m4a
[12:26] <Dark-knight> had to do an extra step because ffmpeg doesn't know how to put alac audio into an mp4 container
[12:26] <Dark-knight> i did this
[12:26] <durandal_1707> but file is still m4a
[12:26] <Dark-knight> mkv>m4a>mp4
[12:26] <JEEBsv> m4a is mp4
[12:26] <Dark-knight> no its not
[12:27] <Dark-knight> yes JEEBsv is right
[12:27] <durandal_1707> JEEBsv: not in source code...
[12:28] <JEEBsv> well I have no idea what ffmpeg does :P
[12:28] <JEEBsv> it's just mp4 with a different ID methinks, and with apple additions
[12:29] <JEEBsv> you could check what L-SMASH does when it puts ALAC into mp4, for example
[12:29] <Dark-knight> at first i tried to change the name to mp4 from m4a using ffmpeg but it just made a new video without the subtitles
[12:29] <Dark-knight> so i just changed the file extension
[12:30] <Dark-knight> i honestly dont know why ffmpeg can turn mkv with flac into mp4 with alac
[12:30] <Dark-knight> other programs do it
[12:32] <Dark-knight> anyway i'd like to thank you JEEBsv for suggesting the m4a method
[12:33] <Dark-knight> it worked for all my files
[12:33] <Dark-knight> i still think ffmpeg should have just DONE it
[12:34] <durandal_1707> it does what is in specification
[12:34] <JEEBsv> well, there's a whole lot of stuff that's not in the specification
[12:34] <JEEBsv> or well, what do you consider the specification
[12:35] <JEEBsv> because the actual container specification doesn't contain too much
[12:35] <durandal_1707> find real world mp4 with alac and it will be easy to make mp4 allow alac...
[12:36] <JEEBsv> so you've got specs for AVC, MPEG-4 Audio, as well as 3GPP stuff for timed text and DTS stuff for DTS audio
[12:36] <JEEBsv> and I don't remember who spec'd AC3 in MP4
[12:36] <JEEBsv> none of those are in the container spec :D
[12:36] <JEEBsv> as for a real world mp4 with ALAC, that shouldn't be too hard
[12:37] <JEEBsv> anyways, I'm at work so I'm not going to herp a derp more right now :)
[12:37] <ubitux> this works: ffmpeg -lavfi 'testsrc[v]; aevalsrc=0[a]' -map '[v]' -map '[a]' -t 5 -c:a alac -y out.mov
[12:37] <ubitux> this doesn't: ffmpeg -lavfi 'testsrc[v]; aevalsrc=0[a]' -map '[v]' -map '[a]' -t 5 -c:a alac -y out.mp4
[12:37] <ubitux> mp4 doesn't standardize alac in mp4, get over it
[12:38] <JEEBsv> uhh
[12:38] <JEEBsv> does ffmpeg support ac3 in mp4?
[12:38] <JEEBsv> dts in mp4?
[12:38] <ubitux> dunno
[12:39] <muken> http://alac.macosforge.org/trac/browser/trunk/ALACMagicCookieDescription.txt
[12:39] <JEEBsv> I'll leave it to muken then :P
[12:39] <JEEBsv> since I've got work to do
[12:39] <ubitux> well then patch welcome ;)
[12:40] <Paranoialmaniac> https://github.com/nu774/qaac/wiki/refalac-usage refalac support alac-in-m4a encoding
[12:40] <ubitux> it works with .m4a
[12:41] <Paranoialmaniac> yes. mp4 != m4a
[12:42] <Paranoialmaniac> m4a is a kind of iTunes MP4
[12:42] <Paranoialmaniac> iTunes MP4 is a simplified MP4
[12:43] <Paranoialmaniac> iTunes MP4 has no support of object descriptors and BIFS. so, mp4 != m4a
[12:49] <asherawelan> When running this command I receive this error: ffmpeg -i /usr/local/wss/project/node/file.mpeg -vcodec mpeg4 -b:v 1200k -flags +aic+mv4 -an http://127.0.0.1:7009/test.mp4
[12:49] <asherawelan> Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
[12:49] <asherawelan> What am i missing?
[12:53] <montecfel> Dark-knight: IRC deadness is hardly the sole reason for my finding the world to be a piece of shit.
[12:56] <Dark-knight> ok
[13:02] <Dark-knight> m4a and mp4 are the same container. M4A is just generally used to indicate an audio only file, but the container format is identical.
[13:02] <Dark-knight> would you like my to provide detailed instructions on how to convert a m4a to mp4?
[13:02] <Dark-knight> me*
[13:03] <durandal_1707> no, because you just rename file
[13:03] <Dark-knight> exactly
[13:04] <durandal_1707> if you can create alac in mp4 with L-SMASH i will add alac tag to mp4
[13:05] <Paranoialmaniac> m4a and mp4 are the same container. <--- no. they are diffrent. there are just some compatibilities.
[14:14] <iive> Paranoialmaniac: can you prove your claims?
[14:14] <Paranoialmaniac> what claims?
[14:14] <iive> mp4 is container defined by iso and it is simplification of apple mov/qt, so...
[14:14] <iive> that mp4 and m4a are different.
[14:17] <Paranoialmaniac> both mp4 and m4a are derived from iso base media file format. derived file formats can be mixed with other derived file formats as long as the file meets all compatibilities
[14:17] <Mavrik> nah, mp4 and m4a are the same
[14:18] <Mavrik> m4a is just the way Apple started to mark MP4 files containing only AAC or ALAC audio
[14:18] <Mavrik> I think Paranoialmaniac is confusing that with mov vs. mp4
[14:18] <Paranoialmaniac> not only aac and alac :P
[14:18] <Paranoialmaniac> i dont consuse
[14:18] <Paranoialmaniac> *confuse
[14:19] <Paranoialmaniac> mp4's file brand is mp41 or mp42
[14:19] <Paranoialmaniac> m4a's file brand is M4A
[14:21] <iive> brand?
[14:24] <Paranoialmaniac> after finalizing the spec of ISO Base Media file format, derived file formats have its file brand in ftyp atom to indicate that this file conforms what specification
[14:26] <Paranoialmaniac> e.g. a file has mp41 and mp42 brand, that file conforms to 14496-1 1st ed. and 14496-14
[14:32] <Dark-knight> but if alac can go into even one variation of mp4 then shouldn't the alac tag be added to the mp4 container?
[14:33] <Paranoialmaniac> Dark-knight: if mp4 have M4A brand, it is not a violation of the spec. unknown atom should be skipped. this is a rule of iso base media and mov file
[14:34] <Dark-knight> so your against adding the tag?
[14:34] <Dark-knight> ok just wondering
[14:34] <Mavrik> note that "brand" (or ftyp) is ignored by ffmpeg when demuxing
[14:38] <Paranoialmaniac> Dark-knight: i'm not against muxing alac into mp4 as long as muxed file has M4A (and/or M4V, M4B, M4P, ...) brands
[14:45] <iive> are there other differences than the brand?
[14:47] <Paranoialmaniac> support of codecs, 64bit duration, process of presentation etc.
[14:48] <Dark-knight> there is no point in adding the tag if your going to put a condition on it like that.
[14:48] <Mavrik> iive, the thing is they're all derived from base specification, but they're chunk / packet based
[14:49] <Dark-knight> i can just rename the m4a file if thats the case
[14:49] <Mavrik> so those subtypes add new types of atoms which others ignore
[14:49] <Mavrik> this is list of known ftyps from 2009: http://www.ftyps.com/
[14:50] <Paranoialmaniac> http://www.mp4ra.org/filetype.html registered file types
[14:51] <Dark-knight> if the alac tag gets added to the native mp4 container list then it would be awesome
[14:51] <Dark-knight> ffmpeg would become one of the only programs that lets you put a non native audio format into a mp4 container
[14:51] <Paranoialmaniac> native mp4 container supports only mpeg audio
[14:51] <Mavrik> what you just said makes no sense >(
[14:52] <Dark-knight> lol well i don't really know what im talking about
[14:52] <Dark-knight> ill just shut up now. :P
[14:52] <Mavrik> ALAC is registered as part of MP4 since forever
[14:53] <Mavrik> e.g. ALAC tag as identifier for private audio stream that is
[14:53] <Paranoialmaniac> Mavrik: this list is not for MP4 only
[14:53] <Mavrik> Paranoialmaniac, oh stop with the "M4A is not MP4" horseshit
[14:54] <Mavrik> ftyp is a flag most players will ignore and will happily parse pretty much all subtypes of mp4
[14:54] <Paranoialmaniac> the specification of derived file format shall document what codec can be used and its encapsulation
[14:54] <Mavrik> including those carrying ALAC without the m4a ftyp.
[14:56] <Paranoialmaniac> Mavrik: yes. you can carry alac without m4a ftyp. but it doesn't meas the demuxer recognize alac as alac
[14:57] <Mavrik> demuxer doesn't give a crap
[14:57] <Mavrik> most players demuxers look like this:
[14:57] <Mavrik> https://ffmpeg.org/doxygen/trunk/mov_8c-source.html
[14:57] <Paranoialmaniac> a spec defines different structure of codec specific atom
[14:57] <Mavrik> which means they take FTYP and throw it away.
[14:57] <Paranoialmaniac> *may define
[14:57] <Mavrik> and treat all MP4 derivatives as same
[14:58] <Mavrik> note how ffmpeg and all ffmpeg derived video players (and pretty much everything else) ignores those specs
[14:59] <Paranoialmaniac> Mavrik: so you ignore the spec if the alsmost all demuxers ignore
[15:37] <grab> Hello
[15:38] <grab> I have a problem, when i would like to use ffmpeg i have this error : [aac @ 0x830a060] Too many bits per frame requested
[15:39] <grab> excuses me
[15:39] <grab> this is my pastbin http://pastebin.com/WPC3eQvU
[15:40] <grab> I would like to convert mp4 file to another mp4 file.
[15:40] <ubitux> > and the COMPLETE console output.
[15:40] <ubitux> (it helps getting: your version, your configuration, the exact error, information on your input, ...
[15:40] <ubitux> )
[15:41] <Dark-knight> lol he did exactly what it said don't do
[15:42] <grab> http://pastebin.com/XezZTrkQ
[15:42] <BtbN> That's libav, not ffmpeg.
[15:43] <ubitux> grab ^
[15:44] <grab> For the history, i'm not the user of this command, i'm the sysadmin for my client. he migrate from two server, and this is the old command who works on the old server
[15:44] <grab> I'm looking for why they don't works, and  i don't know why
[15:44] <grab> BtbN: this is the codec only ?
[15:45] <grab> about http://stackoverflow.com/a/9477756/1109017 : it's not possible to use ffmpeg from apt repository ?
[15:47] <grab> ??
[15:51] <ubitux> you may use deb-multimedia iirc on debian
[15:51] <ubitux> if you're using ubuntu, you may build it yourself
[15:51] <ubitux> or just grab a static build
[15:53] <grab> ubitux: what is deb-multimedia ?? a irc chan around video and others thing on debian ?
[15:54] <ubitux> http://deb-multimedia.org/
[15:54] <ubitux> an alternative repository
[15:54] <grab> i'm using a openvz contener with debian template
[15:54] <ubitux> see also https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=729203
[15:54] <ubitux> anyway.
[15:59] <Dark-knight> why isn't Zeranoe's build on that !dl list?
[19:41] <kz1> is it normal for ffmpeg to complain about missing preset files for libx264  if I use ex -vpre fast  or -vpre medium ?
[19:41] <kz1> i.e.  File for preset 'fast' not found
[19:45] <sacarasc> -vpre was deprecated for x264 years ago.
[19:45] <sacarasc> Use -profile:v fast, medium, etc
[19:45] <sacarasc> Sorry.
[19:45] <sacarasc> -preset:v
[19:49] <kz1> strange I get this error message:  http://pastebin.com/aY8cHs68
[19:50] <sacarasc> How old is your ffmpeg?
[19:50] <JEEB> show the full command?
[19:51] <JEEB> command and output that is
[19:51] <kz1> Just compiled it today. Running on android 4.4. :-  ffmpeg -r 30 -vcodec rawvideo -f rawvideo -pix_fmt rgb565  -s 800X640 -i /dev/graphics/fb0 -preset:v fast  http://localhost:8090/feed1.ffm
[19:54] <kz1> I'm not sure if that last one got through:  http://pastebin.com/RdDht0QK
[19:54] <kz1> Just compiled it today. Running on android 4.4.
[19:54] <sacarasc> That's not the *COMPLETE* output.
[19:56] <kz1> http://pastebin.com/JDfT7VWA
[19:56] <kz1> sorry
[19:59] <JEEB> that's a weird one if that command is correct
[20:00] <JEEB> or well, there's multiple weird points
[20:00] <JEEB> first of all, the warning message looks as if you put -preset:v before -i instead of after
[20:00] <JEEB> second of all, even if the preset option didn't get used
[20:01] <JEEB> you should still get libx264 defaults used
[20:01] <JEEB> not the old ffmpeg libx264 defaults
[20:01] <JEEB> which sucked
[20:01] <brontosaurusrex> how can i say loop input 12 times? ffmpeg -i horse.gif horse.wmw < is my cli
[20:02] <kz1> I'm using a static binary so it shouldn't be affected by any other system libs right?
[20:03] <JEEB> kz1, also that commit doesn't seem to be in ffmpeg's repository?
[20:04] <kz1> sounds like I need to get a new version of ffmpeg.
[20:04] <JEEB> I have no idea what you have, but that revision hash is not in ffmpeg's repository as far as I know
[20:04] <kz1> that might explain a bunch of issues I have been seeing.
[20:15] <kz1> hmm, still same problem with fresh checkout:  http://pastebin.com/VLVjxS0N
[20:16] <JEEB> check if you get the same thing with a similar IA32/x86_64 compile
[20:44] <brontosaurusrex> well: https://dl.dropboxusercontent.com/u/79532365/ffmpeg%2C%20gif%20to%20wmw2%20%28looped%20few%20times%29
[20:45] <brontosaurusrex> gif to wmw, looped few times ^
[20:49] <brontosaurusrex> better link http://paste.debian.net/plain/109089
[20:52] <asherawelan> Evening, Id like to push a CCTV stream to a browser, using webm - the file doesnt have an end point as its a h.264 MPEG stream& can any one help me sort out the flags to allow this to happen so that I can test with VLC and see a stream?
[20:53] <c_14> webm doesn't support h.264&
[20:57] <asherawelan> c_14: noted& my ffmpeg cmd is this: ffmpeg -re -i /usr/local/wss/project/node/file.mpeg -vcodec libvpx -acodec libvorbis -r 30 -g 0 -f webm http://127.0.0.1:7009
[20:57] <asherawelan> Im simulating the cctv feed for now&
[20:57] <sfan5> unless you have a good machine libvpx is probably too slow to encode in real-time
[20:58] <asherawelan> I have the bomb machine
[20:58] <asherawelan> its serious
[20:58] <asherawelan> sfan5: I suppose im asking is it possible for the client to play it mid way through?
[20:59] <sfan5> you mean the client starting to watch it in the middle?
[21:11] <asherawelan> sure
[21:11] <asherawelan> so, theyll pick it up& and might not get any of the headers....
[21:15] <sfan5> I'm not sure whether that works with webm/matroska
[21:16] <sfan5> I'd suggest just trying it
[21:17] <pp19dd> hi guys. what does eng/und mean in a stream report? like, Stream#0.1(und), 1/ .. etc
[21:18] <c_14> undefined
[21:18] <c_14> Usually language codes
[21:18] <pp19dd> and eng? english, i presume.
[21:18] <c_14> ye, you can look up the language codes somewhere
[21:18] <pp19dd> i'm trying to get more info on a particular video, and this one has two streams. eng for video, and und for audio.
[21:19] <pp19dd> trying to figure out if the video's been edited, recomposed, etc. or if it came off a cell phone in one piece. hence the question.
[21:20] <sfan5> you can edit videos without changing any of the metadata
[21:20] <sfan5> detecting whether a video was modified can be pretty hard
[21:21] <pp19dd> that much i figured, but thought to see how sloppily it may have been edited, and by what.
[21:22] <sfan5> the "encoder" metadata pieces might tell you more
[21:22] <sfan5> if they are present
[21:22] <Fjorgynn> webm is interesting
[21:24] <pp19dd> forgive me, i'm ignorant here. how do you go about pulling this info w/ffmpeg?  what i've done is just ffmpeg -loglevel 99 -i file.mp4
[21:25] <sfan5> ffprobe <file> or ffmpeg -i <file> should already give you the most interesting info
[21:26] <pp19dd> thanks. same as i've seen so far.
[21:27] <pp19dd> would you happen to make any more sense of this than i have seen? http://pastebin.com/FfWqzRV5
[21:30] <sfan5> there is litterally 0 metadata about the encoder
[21:30] <sfan5> literally*
[21:30] <pp19dd> indeed. edited? or a cell phone?
[21:30] <sfan5> depending on where this video came from this might be expected
[21:31] <sfan5> I can't give you an answer to that
[21:33] <pp19dd> i figured no one could. but very stripped info, no?
[21:34] <sfan5> yes, that is very few info
[21:34] <sfan5> my android phone adds some metadata
[21:34] <sfan5> but I don't know about older cell phones
[21:38] <pp19dd> thanks for the help.  is there a video 'thumbprint' that you can use to search for duplicates/originals ?  obviously md5sum wouldn't survive an edit.
[21:39] <sfan5> you could do screenshots and do a google reverse search for those, other than that, no, I don't think there is anything
[21:44] <rrouton> has anyone here ever used swr_convert() ?
[21:48] <Fjorgynn> troll
[22:02] <pp19dd> thanks again for the help guys.
[22:03] <pp19dd> if you ever drop by maryland, c_14 and sfan5, i'll buy you beers.
[22:03] <sfan5> is that some place in the US?
[22:04] <sfan5> apparently it is
[22:05] <pp19dd> ah, yes. good old maryland. on the coast and such.
[22:05] <sfan5> just saw it on google maps
[00:00] --- Fri Jul 11 2014