[Ffmpeg-devel-irc] ffmpeg.log.20150926

[burek]

[00:52:24 CEST] <foreverska> Anyone want to take a guess at what processor it would require to do a realtime h.264 encode of raw 1920x1080
[00:52:59 CEST] <fritsch> better get a dedicated gpu
[00:53:07 CEST] <fritsch> using nvenc or vaapi encoding
[00:53:20 CEST] <fritsch> and it's not really a resolution issue but a fps issue
[00:53:27 CEST] <fritsch> 1080p at 5 :-) i can do for you
[00:54:18 CEST] <chungy> x264
[00:54:31 CEST] <chungy> x264's ultrafast preset works with 1920x1080 even on fairly old CPUs :P
[00:54:51 CEST] <chungy> It produces huge files/streams, better have the bandwidth for it :D
[00:54:52 CEST] <foreverska> lol my machine can stream 1080 at 15
[00:57:42 CEST] <foreverska> I'd like to see good quality at 25fps.  The dream would be to throw out three feeds at once, 1080, 720 and SD
[01:02:29 CEST] <foreverska> Maybe I'll look into nvenc.  Couldn't hurt as the need grows.
[01:26:09 CEST] <DHE> depending on your quality needs I'm doing fine on a not-too-unusual core i7
[01:41:17 CEST] <foreverska> Is 1080 always 1080?  Like 1080 recorded from my desktop vs 1080 fed from a blackmagic capture card?
[01:41:27 CEST] <foreverska> As far as processing requirements go.
[01:42:52 CEST] <DHE> image complexity and framerate will have impacts. I mostly deal with 30fps interlaced (over the air signals)
[01:45:25 CEST] <foreverska> Our native format right at this second is 1080i at 59.96.  I've done 1080 at 60 screen records on my home pc, that should be comparable right?
[02:11:36 CEST] <JodaZ> don't capture cards encode for you sometimes?
[02:12:52 CEST] <foreverska> Not BMs.  They just blurt out massive data streams
[07:17:28 CEST] <mnero> is there any parameter to override the rtp payload type?
[07:18:13 CEST] <mnero> like if I want h264 to be 126 instead of 96
[07:31:37 CEST] <bairav> i`m trying to create mpeg-ts file with opus audio but its not working
[07:33:07 CEST] <bairav> help me
[07:34:00 CEST] <bairav> i`m using ffmpeg 2.8
[08:15:09 CEST] <zenny1> Hi, how can one get rid of color keyspill and edge blur after applying color key filter in ffmpeg 2.8?
[08:23:39 CEST] <durandal_170> you can't, yet
[08:23:55 CEST] <zenny1> :(
[08:24:54 CEST] <zenny1> Pretty excited about the color key, but seems to lack fine tuning filter parameters like keyspill removal and blur!
[08:25:36 CEST] <zenny1> Without them, colorkey filter cannot be used in practical sense, or?!
[08:36:42 CEST] <zenny1> According to changelog (https://raw.githubusercontent.com/FFmpeg/FFmpeg/release/2.8/Changelog), it seemed like colorkey seems to be the prominent feature of the release as it stood on top of changelog, but not really applicable. Pity! :(
[09:21:12 CEST] <dasdas> hello everybody please where can i find ffserver ?
[09:22:47 CEST] <dasdas> i mean downloading it
[11:01:20 CEST] <anshul> all mails from ffmpeg user  mailing list and ffmpeg-devel mailing list are encrypted when I look source
[11:01:49 CEST] <anshul> even file saved as .eml and applying patch of it is also not working
[11:02:53 CEST] <anshul> while mails from other friends are looking good in .eml file its just problem with ffmpeg mailing list
[11:03:46 CEST] <anshul> anyone know any method to save encrypted mails in normal format, or  git am those encrypted message
[11:08:38 CEST] <chungy> encrypted how?
[11:09:15 CEST] <chungy> and what is a .eml?
[11:10:34 CEST] <anshul> when i open the email source it like following http://pastebin.com/qWwnHi2u
[11:11:05 CEST] <anshul> .eml is file format to save emails
[11:11:12 CEST] <chungy> odd. That's base64 encoded, you can just use "base64 -d" to decode it...
[11:11:39 CEST] <chungy> probably an attachment
[11:13:04 CEST] <anshul> no it was not attachment, it was like this before http://pastebin.com/JLqqCbUj
[11:13:50 CEST] <anshul> My mail client show this mail properly but when I apply this email as patch git does not understand it
[11:14:33 CEST] <chungy> yeah, git doesn't know about base64 encoding (it's the encoding used for attachments though)
[11:14:42 CEST] <chungy> your mail client probably has a way to save attachments as plain files.
[11:16:12 CEST] <anshul> no its not attachment, i am using well known thunderbird as my mail client
[11:20:42 CEST] <anshul> there are all ffmpeg-user message encoded and I cant see there question(not attachment) in source
[11:52:30 CEST] <anshul> I checked it with gmail webclient same problem
[15:57:49 CEST] <noone_> hi guys
[15:58:23 CEST] <noone_> how would I automatically create an .m3u8 multi-bitrate file using ffmpeg ?
[15:59:42 CEST] <BtbN> you don't.
[15:59:48 CEST] <RobotsOnDrugs> m3u8 is text
[15:59:54 CEST] <noone_> something like in this example where I have lo/mid/hi profile and then merge those in one main file so the video can automatically shift
[15:59:56 CEST] <noone_> http://stackoverflow.com/a/1070979/4916078
[16:00:15 CEST] <BtbN> You'll have to do that yourself, ffmpeg only creates simple playlists.
[16:02:15 CEST] <noone_> yes, I would like to automatically create lo / mid / hi playlist and then one main playlist containing all three so the video can adjust and stream nicely even on the low bandwith
[16:02:36 CEST] <noone_> like in that example I posted from stackoverflow
[16:02:46 CEST] <BtbN> <BtbN> You'll have to do that yourself, ffmpeg only creates simple playlists.
[16:03:48 CEST] <noone_> so I can't merge them into one main playlist ?
[16:03:56 CEST] <BtbN> you can, ffmpeg can't.
[16:03:56 CEST] <noone_> after creation
[16:05:18 CEST] <noone_> ok, thanks for your answer
[16:52:31 CEST] <web5|org|ua> Hey, can i use multiple cuts in one action & one input audio ? I would like to take several slices from the input and put it in one out piece ?
[19:58:42 CEST] <NapoleonWils0n> hi all
[19:58:53 CEST] <NapoleonWils0n> is there a way to hide dts pts errors
[20:02:53 CEST] <NapoleonWils0n> im just piping sterr to stdout and using sed to remove the errors at the moment
[22:03:36 CEST] <FiyreWyrkz> I'm hoping someone can help with transcoding a video downloaded from youtube (currently in an .flv that won't play as is) to play on a video mp3 player for my niece. It's a cheapo product and claims according to the manual that it supports for video (AVI/Xvid, WMV, FLV, 3GP, and RM/RMVB - in QVGA 320x240) and audio (MP3, WMA, APE, FLAC, OGG 32kbps-320kbps)
[22:04:44 CEST] <FiyreWyrkz> I've tried "ffmpeg -i foo.flv -vcodec wmv2 -s qvga -acodec wmav2 foo.wmv"
[22:05:09 CEST] <FiyreWyrkz> I'm not very fluent with ffmpeg options and would appreciate any thoughts
[22:34:32 CEST] <klaxa> FiyreWyrkz: looks mostly correct, what went wrong?
[22:34:59 CEST] <klaxa> you can try mpeg4 or libxvid as videocodecs too
[22:37:14 CEST] <FiyreWyrkz> I get a file format error from the player - I'm trying in .avi playing with some preset options from WinFF altering them to output to QVGA/320x240
[22:39:45 CEST] <waressearcher2> is that correct: "ffmpeg -ss 40 -i in.avi -ss 40 -i in.wav -c copy -map 0:v:0 -map 1:a:0 -shortest -t 870 -y -f avi out.avi" ?
[22:40:04 CEST] <waressearcher2> or should I also have two "-t 870" after each "-i" ?
[22:42:03 CEST] <klaxa> you only need one -t since you only have one output
[22:42:07 CEST] <klaxa> so yes, looks okay
[22:42:14 CEST] <waressearcher2> like that: "ffmpeg -ss 40 -i in.avi -t 870 -ss 40 -i in.wav -t 870 -c copy -map 0:v:0 -map 1:a:0 -shortest -y -f avi out.avi" ?
[22:43:03 CEST] <klaxa> not sure if because of seeking it might get A/V sync issues
[22:43:10 CEST] <waressearcher2> should I use or remove "-shortest" ?
[22:43:27 CEST] <klaxa> depends on what you want
[23:30:56 CEST] <rsgm2> I am trying to concat 200 or so audio/video webm files that are 1 second each. I concat the video and audio seperatly, the video works completely fine and comes out to 3.5. The audio however comes out to be 2 minutes long, here is the audio command: http://pastebin.com/rDN1jPDs
[23:31:24 CEST] <rsgm2> Has anyone encountered this problem?
[23:52:37 CEST] <klaxa> have you tried just using the concat demuxer? https://trac.ffmpeg.org/wiki/Concatenate
[23:53:23 CEST] <rsgm2> No, I will take a look at what that is, thank you
[23:58:09 CEST] <freezway> can you get ffmpeg to tell you what format it used for the output in a way that is compatible with itself?
[23:58:50 CEST] <freezway> like i want to convert and have the output file have no extension, but without the extension it doesn't know what to use for -f.
[00:00:00 CEST] --- Sun Sep 27 2015