[Ffmpeg-devel-irc] ffmpeg.log.20150502

[burek]

[00:01:12 CEST] <BtbN> Or its just a people with bad internet problem.
[00:01:52 CEST] <cnut> One was running through a vpn, told him to stop
[02:54:19 CEST] <halit> hi guys
[02:54:27 CEST] <halit> can i ask a question
[02:56:57 CEST] <halit> i have a code http://pastebin.com/AaHQAc2V but i have some issues. the watermark doesnt fit the video. The video's resolution 720x480 but the watermark image 1280x720. The watermark doesnt fit.it seems only right bottom.
[03:06:44 CEST] <seasc> you might want to try: -filter_complex '[0:v:0][a]overlay ; [1:v:0]scale=720:-1[a]'
[03:06:49 CEST] <seasc> @ halit
[03:08:22 CEST] <halit> Thanks for helping but i  want a different solution
[03:08:32 CEST] <halit> lets say i'll do batch production
[03:08:46 CEST] <halit> i have a lot of video resolutions changes everytime
[03:09:03 CEST] <halit> how can i fit the watermark center of video
[03:10:08 CEST] <halit> i changed the value to this  overlay=(W-w)/2:(H-h)/2
[03:10:27 CEST] <halit> and it was center of video but zoomed
[03:10:44 CEST] <halit> i think i should use scale ?
[03:11:12 CEST] <seasc> u on linux?
[03:11:20 CEST] <halit> no windows
[03:11:53 CEST] <halit> change all " to ' if you on linux
[03:12:47 CEST] <seasc> nah not because of that :)
[03:13:41 CEST] <seasc> have a look at lines 1544-1585... should give you a hint on centering/alignment your image:  https://github.com/sri-arjuna/vhs/blob/master/files/vhs.sh
[03:15:12 CEST] <halit> thanks ill
[03:15:41 CEST] <seasc> i'm not good in explain such things, so i'd rather tell where to look in some existing code :p hope it helps
[03:16:45 CEST] <halit> You must have manager :)
[03:17:06 CEST] <halit> You give direction to people's lives :)
[03:18:08 CEST] <seasc> :)
[03:40:17 CEST] <lordkrondor> m
[05:17:53 CEST] <jookiyaya> what is the deal with bluray?  i have a dvd that is a big mess and  has like 40 big scraches on one dvd disc and i can rip the dvd fine; but really clean bluray that maybe has one tiny scratch and i cannot rip the bluray
[07:49:17 CEST] <t4nk964> hi
[07:58:42 CEST] <t4nk964> libvpx -> vp8
[09:26:05 CEST] <tmh1999> Hi guys I have a problem and I hope some guru in here could help me :D As far as I know, H.264 bit-rate and file size are half of H.263 (both encode & decode). I try to encode this video (http://media.xiph.org/video/derf/y4m/flower_garden_422_ntsc.y4m) to H.263 and H.264. The result is  H.263 output file size is 2MB, H.264 output is 5.7MB, which I think is wrong. The command I use & its output is here http://pastebin.com/s7Ssughw
[09:28:03 CEST] <tmh1999> And the quality of H.263 output file is much poorer than H.264 file. All I want is to make a test that shows H.264 bit-rate and file size are smaller than H.263.
[09:28:43 CEST] <seasc> are you perhabs mistaken by x263 and actualy want to compare with x265?
[09:29:26 CEST] <tmh1999> seasc : I actually want to want compare with H.263.
[09:29:44 CEST] <tmh1999> seasc : It's more like a school project to prove that H.264 is better.
[09:30:48 CEST] <seasc> tmh1999, sry me havent 'played' with x263
[09:32:17 CEST] <tmh1999> seasc : In case I want to compare with x265, I just have to replace -vcodec libx264 option with -vcodec libx265, right?
[09:32:50 CEST] <seasc> tmh1999, if libx265 is installed, yes
[09:33:00 CEST] <rcombs> you probably want to adjust your settings a fair bit as well, as they don't match up 1:1
[09:33:22 CEST] <rcombs> a lot of things are similar, but take somewhat different values
[09:35:06 CEST] <tmh1999> rcombs : I hope those in https://trac.ffmpeg.org/wiki/Encode/H.265 would be what you mentioned.
[09:35:26 CEST] <tmh1999> seasc : Thank you !
[09:36:10 CEST] <rcombs> some of them, yeah
[09:37:58 CEST] <seasc> tmh1999, yes and welcome :)
[09:50:07 CEST] <seasc> tmh1999, erm sry, you need to build it for/with x265 support
[10:05:30 CEST] <tmh1999> seasc : Yes I know.
[10:36:15 CEST] <Dark-knight> hey does anybody in here use firefox and still use flash to watch videos on youtube?
[10:36:33 CEST] <Dark-knight> if so, I need a copy of your youtube cookies
[10:36:47 CEST] <Dark-knight> or else i have to do a system restore
[10:37:06 CEST] <Dark-knight> i know this isn't the right channel, but i thought it was worth asking
[10:37:15 CEST] <Dark-knight> you guys have helped me before
[13:18:01 CEST] <mess> i convert mkv to mp4 (just container), but after done its reduce the fps to 15 from 25 in mkv container?? how this possible?? thanks.
[19:47:57 CEST] <micechal> is it possible to interpolate filter parameters over time with ffmpeg?
[19:49:23 CEST] <BtbN> no
[19:51:03 CEST] <micechal> hmm maybe I asked a wrong question
[19:51:18 CEST] <micechal> let's say I have a 10 seconds audio sample
[19:51:32 CEST] <micechal> and want to apply "allpass" filter to it
[19:52:09 CEST] <micechal> in such way that at the beginning it's "frequency" parameter is 400 Hz
[19:52:18 CEST] <micechal> and at the end it's 800 Hz
[19:52:28 CEST] <micechal> so it's not possible?
[21:45:06 CEST] <DragonsLordKERNE> Hello everybody!
[21:46:07 CEST] <DragonsLordKERNE> Can someone explain why I see one null frame within the AVInaptic report of a video resulted with FFMPEG?
[21:46:25 CEST] <DragonsLordKERNE> I double-checked with AVIdemux and other softwares ...
[21:46:32 CEST] <DragonsLordKERNE> ... and I obtained no null frames
[21:46:33 CEST] <DragonsLordKERNE> :|
[22:34:15 CEST] <t4nk418> hello there
[22:35:39 CEST] <t4nk418> I need a help with something :) i have a server that and ip camera is sending the jpg files of the camera every 5 second
[22:36:13 CEST] <t4nk418> im sucefully convert al the jpg to mp4 format in ther server
[22:36:21 CEST] <t4nk418> with : cat *.jpg |  |sudo ffmpeg -f image2pipe -r 1 -vcodec mjpeg -i - -vcodec libx264 out.mp4
[22:36:48 CEST] <t4nk418> but i want to put the name of the jpg file to the video
[22:37:28 CEST] <t4nk418> any idea how it can be do it?
[22:37:36 CEST] <t4nk418> thankx for the help
[22:38:17 CEST] <DragonsLordKERNE> Hi t4nk418 ... are your using a Linux server?
[22:38:26 CEST] <t4nk418> yes
[22:38:38 CEST] <DragonsLordKERNE> I am not a FFmpeg expert
[22:38:50 CEST] <DragonsLordKERNE> But i guess you can build a shell script
[22:38:53 CEST] <t4nk418> i think a bash expert
[22:39:16 CEST] <DragonsLordKERNE> using, for example, a for construct
[22:39:35 CEST] <DragonsLordKERNE> or doing something like
[22:39:43 CEST] <DragonsLordKERNE> find . -type f -name "*.jpg"
[22:39:49 CEST] <DragonsLordKERNE> to build the list
[22:39:52 CEST] <DragonsLordKERNE> and then
[22:40:25 CEST] <DragonsLordKERNE> pass the list to FFmpeg using each filename as the output
[22:40:32 CEST] <DragonsLordKERNE> you should do some testing
[22:40:48 CEST] <DragonsLordKERNE> there are several ways, of course, to reach your goal
[22:40:57 CEST] <t4nk418> -vf \ "drawtext=fontfile=/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf: \ text='\%T': fontcolor=white at 0.8: x=7: y=460" iam  stuck in this part
[22:41:19 CEST] <t4nk418> in this example %T is for timestamp
[22:41:38 CEST] <t4nk418> but it could be replaced for any text
[22:42:41 CEST] <t4nk418> the problem is how i can replace %T with a variable that contain the filename
[22:44:37 CEST] <DragonsLordKERNE> Please, try to lookat this example
[22:44:38 CEST] <DragonsLordKERNE> http://ubuntuforums.org/archive/index.php/t-1023231.html
[22:44:54 CEST] <DragonsLordKERNE> this is the first match I found
[22:47:30 CEST] <t4nk418> thankx for the help
[22:47:56 CEST] <DragonsLordKERNE> you are welcome
[22:48:03 CEST] <DragonsLordKERNE> it's just an example
[23:36:47 CEST] <otyugh> Hey there. I've got this .mkv of 1.1Go, I'd want to convert it to something 1Go or less. How could I do that ?
[23:37:15 CEST] <otyugh> Is there a way to simulate a conversion and get the size that would be ?
[23:43:06 CEST] <BtbN> 2pass cbr encoding with libx264 is what you use to target a specific size.
[23:44:12 CEST] <otyugh> sounds complex BtbN. Do you have a tuto or a command exemple to guid me to the lights of understanding or is there only the rought way of looking by myself ? x)
[23:45:48 CEST] <BtbN> https://trac.ffmpeg.org/wiki/Encode/H.264#twopass
[23:47:03 CEST] <DragonsLordKERNE> BtbN, one issue also from me ...
[23:47:27 CEST] <DragonsLordKERNE> ... I tried to set a CBR conversion for a MP3 audio ...
[23:47:47 CEST] <DragonsLordKERNE> ... it's fine but the resultant avi, opened with VirtualDub ...
[23:47:55 CEST] <DragonsLordKERNE> ... seems to be VBR ...
[23:48:43 CEST] <DragonsLordKERNE> ... better analized with AVInaptic it seems to be both VBR and CBR (depending on the attributes) ...
[23:48:46 CEST] <DragonsLordKERNE> any ideas?
[23:49:10 CEST] <BtbN> "seems to be VBR"?
[23:49:47 CEST] <DragonsLordKERNE> yep
[23:49:52 CEST] <DragonsLordKERNE> let me explain
[23:50:53 CEST] <DragonsLordKERNE> Here it is what I was meaning > http://pastebin.com/uukiA3tU <
[23:51:14 CEST] <BtbN> 128 kbps CBR?
[23:51:39 CEST] <BtbN> Looks like your analyzer is confused
[23:51:57 CEST] <DragonsLordKERNE> no, please look again
[23:52:00 CEST] <DragonsLordKERNE> it's both
[23:52:06 CEST] <DragonsLordKERNE> Bitrate (bs): 128 kbps CBR
[23:52:13 CEST] <DragonsLordKERNE> but also
[23:52:19 CEST] <DragonsLordKERNE> Bitrate: 128 kbps VBR
[23:52:20 CEST] <BtbN> https://trac.ffmpeg.org/wiki/Encode/MP3 has everything you need to know about lame.
[23:54:38 CEST] <DragonsLordKERNE> I know ... but did you look at my output?
[23:55:37 CEST] <BtbN> Yes, that's why i'm saying your analyzer seems to be confused.
[23:55:40 CEST] <BtbN> As it says both.
[23:56:20 CEST] <DragonsLordKERNE> Well, but also AVidemux
[23:56:28 CEST] <DragonsLordKERNE> and VirtualDub
[23:56:38 CEST] <DragonsLordKERNE> consider the output as VBR
[23:56:39 CEST] <BtbN> Is the filesize not as expected for cbr, or what exactly is the issue?
[23:56:52 CEST] <DragonsLordKERNE> http://pastebin.com/1zH2TM6w
[23:56:59 CEST] <DragonsLordKERNE> these are the options I am using
[23:57:23 CEST] <DragonsLordKERNE> the only issue is that I need to have a REAL CBR
[23:57:29 CEST] <DragonsLordKERNE> also some very old players
[23:57:41 CEST] <DragonsLordKERNE> are not compatible with MP3 VBR
[23:59:21 CEST] <BtbN> What ffmpeg version are you using?
[00:00:00 CEST] --- Sun May  3 2015