[Ffmpeg-devel-irc] ffmpeg-devel.log.20180927

[burek]

[00:48:10 CEST] <cone-704> ffmpeg 03Mark Thompson 07master:c8c81ac5026c: lavc: Add coded bitstream read/write support for AV1
[00:48:11 CEST] <cone-704> ffmpeg 03Mark Thompson 07master:476a77128a25: lavc: Add AV1 metadata bitstream filter
[00:50:18 CEST] <jamrial> \o/
[00:50:50 CEST] <jkqxz> :)
[00:51:57 CEST] <jkqxz> (Todo: testing.  Still waiting for any official test streams at all...)
[00:59:54 CEST] <jamrial> the parser will make sure it gets enough testing, at least for cli and avformat users
[10:30:56 CEST] <j-b> 'morning
[10:42:42 CEST] <j-b> durandal_1707: ping
[10:45:42 CEST] <durandal_1707> j-b: pong
[10:46:40 CEST] <j-b> https://pastebin.com/raw/NqjEsT21
[10:47:45 CEST] <atomnuker> - AACE (aac enhanced with low delay) <- eh? aac-eld wasn't good enough
[10:47:56 CEST] <durandal_1707> powerpoint? you are nuts
[10:48:45 CEST] <durandal_1707> or it is RGBB fourcc in AVI?
[10:52:47 CEST] <j-b> RGBB in AVI, I believ
[10:53:35 CEST] <j-b> durandal_1707: complain to koda.
[10:54:40 CEST] <j-b> durandal_1707: those are the ones we are discussing for bounties
[10:56:08 CEST] <j-b> atomnuker: durandal_1707: so, I need your feedbacks before adding them officially.
[10:56:29 CEST] <durandal_1707> well for bunch of them i see no samples
[10:56:39 CEST] <j-b> Samples will be provided
[10:56:49 CEST] <durandal_1707> or easily accessible decoder/encoder app
[10:57:05 CEST] <durandal_1707> adding RASC was pain
[10:57:18 CEST] <atomnuker> there are xHE-AAC samples?
[11:21:18 CEST] <durandal_1707> j-b: verint rfb code download is allowed only to their users, one needs codec files to successfully RE codec, there is alternative link but it request i enter card details which i not going to do
[11:38:53 CEST] <atomnuker> BBB: so _thats_ why you wanted a rewrite
[11:38:56 CEST] <atomnuker> should have said so sooner
[11:40:30 CEST] <atomnuker> I think I'll just close my PR then
[11:41:46 CEST] <BBB> I think youre well underway
[11:41:53 CEST] <BBB> I mean, youve so far fixed half of the style issues
[11:42:07 CEST] <BBB> removed the redundant functions for symbol/bool reading
[11:42:15 CEST] <BBB> so some things are better, some things still to do
[11:51:47 CEST] <BBB> atomnuker: I think the question is basically whether youre interested in the above. If your goal is tomake the file better, youre doing it. If your goal is to make it consistent so the rewrite msac.c todo item goes away, thats the direction it should move into, IMO. which is your goal? :)
[12:13:01 CEST] <Compn> j-b / durandal_1707 : amusegraphics ag2m info + link to screen capture program codec http://aviutl.info/ag-desctoprecoder/
[12:13:12 CEST] <j-b> sample?
[12:13:33 CEST] <Compn> (it was mentioned in your bounty paste list above)
[12:13:47 CEST] <Compn> i could probably make one
[12:14:00 CEST] <Compn> j-b : where is list of bounties ? in vlc trac or ?
[12:14:15 CEST] <j-b> https://wiki.videolan.org/Bounties
[12:14:18 CEST] <Compn> thx
[12:14:22 CEST] <j-b> + the list above that was mentionned
[12:16:00 CEST] <Compn> curious list of codecs, some are very rare
[12:16:06 CEST] <Compn> in the paste list
[12:16:14 CEST] <Compn> or ones i've never seen/heard of
[12:16:53 CEST] <j-b> same
[12:17:07 CEST] <atomnuker> BBB: rewrite
[12:17:40 CEST] <j-b> Compn: but, I mean, FFmpeg has almost everyhing
[12:18:09 CEST] <Compn> well, there is a large list of binary decoders in mplayer that should be RE'd eventually :)
[12:18:13 CEST] <BBB> atomnuker: ok, so the above is sort of my list of things. I like the comments youve kept there, I never comment my code well enough (says unlord)
[12:20:41 CEST] <Compn> j-b : if you want i could come up with a list of codecs that still need RE 
[12:24:12 CEST] <Compn> I keep the list https://wiki.multimedia.cx/index.php/Category_talk:Video_FourCCs
[12:26:22 CEST] <durandal_1707> just ignore Compn he do not want to add libavcodec reversed codecs to mplayer list any more, just to claim to add win32 emulation to ffmpeg
[12:30:58 CEST] <Compn> ugh i find another new codec in google
[12:31:39 CEST] <Compn> http://rain.ifmo.ru/~skakov/arvic.html
[12:31:51 CEST] <Compn> Video codec based on wavelet-transform and subsequent arithmetic compression. 
[12:31:53 CEST] <Compn> ehe
[12:41:10 CEST] <j-b> Compn: no, I want ones that are actually used
[13:16:59 CEST] <Compn> crud, only 30gb free on samples server
[13:28:50 CEST] <durandal_1707> j-b: AmuseGraphics - fourcc is AGM2, not AG2M
[13:32:53 CEST] <durandal_1707> i got AGM2 avi file
[14:18:59 CEST] <BBB> how do I set a custom vcodec in ffplay?
[14:19:03 CEST] <BBB> -vcodec doesnt do it...
[14:32:49 CEST] <durandal_1707> ffplay is crap
[14:33:02 CEST] <atomnuker> mpv can specify a decoder
[14:33:36 CEST] <atomnuker> you can always just compile your own libavcodec which disables a built in codec and LD_PRELOAD it
[14:34:22 CEST] <durandal_1707> but -vcodec should work for ffplay
[15:05:09 CEST] <kierank> https://www.bbc.com/news/technology-45664640
[22:05:48 CEST] <JEEB> wat
[22:05:55 CEST] <JEEB> google adding AVC/HEVC support for IVF
[22:05:58 CEST] <JEEB> I... don't even
[22:22:37 CEST] <gnafu> JEEB: Where do you see that?
[22:22:41 CEST] <gnafu> Also, WHY?!
[22:22:49 CEST] <JEEB> https://patchwork.ffmpeg.org/patch/10506/
[22:22:51 CEST] <JEEB> yes
[22:23:06 CEST] <JEEB> I hope I wasn't coming out too rude but that was my big question mark above my head as well
[22:23:17 CEST] <JEEB> they put Annex B into IVF
[22:23:44 CEST] <JEEB> also I like it how half of that patch misses HEVC
[22:28:41 CEST] <gnafu> JEEB: I think your question is fair.  Why allow creation of a file that no one should really need to create?
[22:29:35 CEST] <kierank> JEEB: what are they smoking
[22:30:04 CEST] <JEEB> kierank: evidently something very good or bad
[22:30:05 CEST] <kierank> j-b: ^
[22:30:41 CEST] <jamrial> ivf can't even signal keyframes. you still need some packetizer/parser for it
[22:31:08 CEST] <JEEB> jamrial: yea, that's why I mentioned it :D
[22:31:15 CEST] <jamrial> i bet they did this because it makes spliting access units "easier"
[22:31:30 CEST] <kierank> jamrial: AUDs?
[22:31:33 CEST] <jamrial> yeah
[22:31:40 CEST] <JEEB> yes, AUDs or something with packet sizes then
[22:31:42 CEST] <jamrial> opening raw annex-b needs assembly, like our parser does
[22:31:46 CEST] <kierank> I mean you can do it with auds
[22:32:22 CEST] <kierank> January wrote a simple parser
[22:33:00 CEST] <jamrial> aud nalus are not a requirement for a valid stream, and afaik are not even present in mp4/mkv
[22:34:18 CEST] <JEEB> yes, they're not required and probably 14496-15 says nope at them since you no longer have to delimit things as much
[22:41:56 CEST] <January> they cant afford a single NALU lookahead?
[22:57:16 CEST] <kierank> January: not that easy to figure out what NALUs are in a frame
[22:57:45 CEST] <kierank> I guess they want a simple container with timestamps
[22:58:18 CEST] <JEEB> oh it has timestamps?
[23:28:50 CEST] <nevcairiel> thats practically all it has, frame size and timestamp (with configurable fractional timebase even)
[23:32:36 CEST] <JEEB> ok, so prefixed size and a timestamp? I guess that's useful on some level
[23:39:48 CEST] <nevcairiel> a single byte for flags might have been nice, for keyframes etc, but what can you do
[23:54:06 CEST] <cone-400> ffmpeg 03Carl Eugen Hoyos 07master:303439bc5f7a: lavf/mpeg: Support demuxing HEVC in mpeg-ps.
[00:00:00 CEST] --- Fri Sep 28 2018