[00:37] <Michael653> hi there. Can a timeout be specified for ffmpeg -i http://something ? I seem to get "Unrecognized option 'timeout'", although I see a timeout here: https://ffmpeg.org/ffmpeg-protocols.html#http [00:38] <spaam> commandline ? [00:41] <Michael653> nevermind. Used an old version... :( I've downloaded ffmpeg today, but on another computer. [00:41] <Michael653> thanks! [06:59] <waressearcher2> how to join 2 videos but also make transition effect when one video dissapeared or becomes transparent and other video start to appear so in other worlds to overlay two videos for about 1 or 2 seconds with transition effect ? [06:59] <waressearcher2> s/worlds/words/ [07:00] <waressearcher2> I don't even know how that effect called so I can find it in google, is it transition effect ? [07:27] <waressearcher2> anyone ? [07:30] <sacarasc> I am not sure that ffmpeg can do that. It's more of an video editor's job than an encoder. [07:32] <waressearcher2> what about filter ? [07:33] <waressearcher2> there should be a filter like that [07:38] <waressearcher2> http://stackoverflow.com/questions/7565962/ffmpeg-fade-effects-between-frame... from that page: "Please tell a solution for Centos server because i am using FFmpeg on this server only", really ? is it matter where do you use your ffmpeg ? is there difference between say ffmpeg on "Centos server" and on "Ubuntu" ? [07:40] <sacarasc> By default, Centos ships an absolutely ancient one. [07:40] <sacarasc> And Ubuntu doesn't ship ffmpeg at all. [07:57] <waressearcher2> "-s 320x240 -aspect 4:3" why do I need to use -aspect there ? [09:21] <AreaScout> morning, i am trying to feed ffmpeg library from memory via avio_alloc_context, the callback function to read from memory does feed ffmpeg with chunks, each chunk has a header+payload, my question is, is this the right way to do it ? or do you have to feed it in some special way i.e first the header, then the payload, because i only get a constant green screen, if i feed the file directly with [09:21] <AreaScout> avformat_open_input it works ?? [10:10] <termos> http://blog.zencoder.com/2011/12/08/announcing-the-clouds-most-efficient-htt... is there something like this available in ffmpeg? Optimizing the mpegts segments file size [14:02] <DannyZB> if anyone knows : how to automatically black-border a video to a certain ratio ( pure ffmpeg , no size calculations outside of it ) [15:19] <t4nk724> hi [15:19] <Mavrik> ih. [15:19] <t4nk724> how can i gram my desktop with audio and save it to mp4 format (best qualirt)? [15:19] <t4nk724> quality* [15:19] <t4nk724> i have problem with audi delay [15:20] <t4nk724> ffmpeg -f alsa -ac 2 -i hw:0,0 -f x11grab -r 30 -s 1366x768 -i :0.0 -vcodec mpeg2video -sameq $1 [15:20] <t4nk724> i'm using it [15:21] <t4nk724> and? [15:22] <Mavrik> you really shouldn't use sameq. [15:23] <Mavrik> there's a whole guide on ffmpeg wiki which is up to date, what you're using seems very very obsolete :) [15:24] <t4nk724> Mavrik: i dont have a time for guides [15:24] <t4nk724> i need best solution [15:24] <Mavrik> Oh. [15:24] <Mavrik> So you want us to do your solution for you. [15:24] <t4nk724> no, I hope you know the best of it [15:24] <Mavrik> Maybe someone else will :) [15:24] <t4nk724> for screencast recording [15:25] <t4nk724> it should be simple, i need best quality with audio synch [15:26] <t4nk724> and? [15:27] <t4nk724> i tested all from them: [15:28] <t4nk724> http://wklej.to/hClVn/text [15:28] <t4nk724> and nothing is good enought [15:28] <t4nk724> ;( [15:28] <t4nk724> where can I find some help if not here? [15:30] <t4nk724> is there any commercial support for ffmpeg? [15:30] <t4nk724> i need to talk with expert [15:32] <t4nk724> hello? [16:05] <CodingFabian> hi guys - are there 64bit static nightly builds from master available? http://ffmpeg.gusari.org/static/ builds from 2.2. I assume? Maybe related is there a timeline for 2.3? [16:07] <c_14> I'm pretty sure gusari builds from git master HEAD [16:08] <CodingFabian> okay, does it say somewhere how it is compiled? [16:09] <CodingFabian> because i am getting different results using self compiled and nightly build [16:09] <c_14> If you download the binary run ./ffmpeg -version and it'll print the configuration if that's what you wanted. [16:11] <CodingFabian> hmm okay, thanks for the input I need to figure then out why i am getting different results on pre-compiled and my own compile :) [16:12] <CodingFabian> thanks! [16:14] <AreaScout> hi, i am trying to feed ffmpeg library from memory via avio_alloc_context, the callback function to read from memory does feed ffmpeg with chunks, each chunk has a header+payload, my question is, is this the right way to do it ? or do you have to feed it in some special way i.e first the header, then the payload, because i only get a constant green screen, if i feed the file directly with [16:14] <AreaScout> avformat_open_input it works [16:17] <Mavrik> hmm [16:17] <Mavrik> AreaScout, anything to pass in goes through demuxer anyway [16:17] <Mavrik> so if you set proper callbacks it should "just work" [16:24] <AreaScout> Mavrik, so it should also work if i just pass first the half chunk and then the other, or should i pass the chunks exactly ? because i have tried really a lot now and it does not work ? on the first package i get 'unkown RoQ chunk (0000)' but the package seems to be ok, so is there an example to look at ? [16:24] <Mavrik> AreaScout, that really depends on demuxer [16:24] <Mavrik> I had some issues where e.g. MPEG2-TS demuxer wanted to have data in full 188B chunks [16:24] <Mavrik> some others don't [16:25] <AreaScout> it's id RoQ codec from DOOM3 [16:25] <Mavrik> since you didn't say which format you have it's hard to say... rule of thumb is to always pass full chunks [16:26] <AreaScout> yep but full chunks doesn't work either ..., is it possible that av_probe_input_format does make problems ? [16:30] <Mavrik> yes. :) [16:30] <Mavrik> but since I don't know the format... it's hard to say [16:30] <Mavrik> usually stepping through the code using gdb can give you some ideas what goes wrong [16:32] <AreaScout> Mavrik, ok good idea, format is id RoQ [16:33] <AreaScout> http://samples.mplayerhq.hu/game-formats/idroq/ [16:35] <Mavrik> AreaScout, anyway, a little hint, compile ffmpeg with debug flags when developing with libav libraries [16:35] <Mavrik> which will let you step through code from breakpoints [16:35] <Mavrik> makes life easier when something wierd is going on [16:37] <AreaScout> :) k, thx cool ^^ [16:50] <liam-kelly> Is it possible to decode a mxg stream and rencode it in another format? [16:52] <c_14> should be [16:52] <c_14> If with mgx you are in fact referring to mxPEG [16:52] <liam-kelly> yes mxPEG [16:53] <liam-kelly> I am able to decode and view the stream with ffplay but not convert it with ffmpeg [16:53] <liam-kelly> I get an error about "Unable to find a suitable output format..." [16:55] <liam-kelly> This is what I am running ffmpeg "http://camera_ip/cgi-bin/faststream.jpg?stream=MxPEG&fps=25" -f mxg -f libx264 test.mxg [16:57] <c_14> What format/codec are you trying to convert to?\ [16:57] <c_14> -\ [16:59] <liam-kelly> libx264 [17:00] <liam-kelly> I also compiled ffmpeg with the option to include libx264, so it should be supported [17:00] <c_14> And you want it as a raw h264 stream or in what format do you want it? [17:01] <c_14> If you want raw h264, use ffmpeg -i mxpegthingy -c:v libx264 [encoder settings] -f h264 out.h264 [17:05] <liam-kelly> I tried that and now I get "Invalid data found while processing input" [17:05] <c_14> If FFmpeg can't detect the input format you'll need ffmpeg -f mxg -i mxpegthingy [etc] [17:07] <liam-kelly> It works now! Thank you so much! [17:08] <liam-kelly> Just a random question are there any good books on ffmpeg? [17:12] <c_14> None I know of. [18:28] <Steve57> I've had a rather odd "problem" with ffmpeg for the past several months (latest git updates, running on linux). [18:29] <Steve57> It works perfectly, but shows no progress while reencoding, and the "q" key does nothing. [18:30] <Steve57> It works fine, it just doesn't show it. Starts with its usual display, then stops updating. This is on console, btw. [18:36] <Steve57> Doesn't seem to matter what options I use, or what I'm encoding to/from. No big deal, really, I just can't figure out what's causing it. [19:18] <c_14> Steve57: Did/does the progress show with older versions? It might be a regression after some change. If it did/does work with an older version could you try bisecting to find the commit that breaks it? [19:20] <Steve57> c_14: Yeah, it worked fine with a revision from last year. I have no idea at what point it crept in. [19:20] <Steve57> But OK, I can try plowing through it. [19:22] <c_14> you can try just building minimal versions of FFmpeg and doing short test encodes. Not perfect, but with a problem like you seem to be having it might be specific to your setup so I don't know of a better way to test. [19:23] <Steve57> That's probably true! It almost has to be something really simple and rather unique. [19:23] <Steve57> Anyway, thanks, I'll see what I can find out. :) [19:51] <stephenmac7> Hello, I'm having a bit of trouble streaming an rtsp stream to HLS. [19:51] <stephenmac7> ffmpeg does not error, but I cannot play the output. [19:52] <stephenmac7> The problem goes away if I re-encode the h264 stream [20:24] <stephenmac7> Nevermind, -bsf:v dump_extra seems to work [22:07] <i_s> when piping image frames to ffmpeg for an overlay, is there a way to get the current pts? (have variable frame rate) [23:24] <Mista-D> c_14: Thanks a lot with the concat and split filters the other day. [23:25] <Wintershade> hey guys [23:25] <Wintershade> a quick question [23:25] <Wintershade> is it still normal to get the "Warning: data is not aligned! This can lead to a speedloss" thing? or am I doing something wrong again? [23:51] <Plorkyeran> if you're using the api, it means you're not using av_malloc where you should be [23:51] <Plorkyeran> (or your own aligned memory allocator) [23:57] <sobaah> hi all, I am having a bit of an issue with a large MKV file (9GB), where I am using the "-attach FONTFILE.ttf" to the file and the main issue is this: ffmpeg seems to write the entire file to memory first but I don't have the 9GB it would need. Is there any way to around this? [00:00] --- Wed Jul 16 2014