Re: [Libav-user] how to parse audio/video information for rtmp protocal

2016-06-29 10:58 GMT+08:00 qw : > Hi, > > FFmpeg has its native rtmp plugin, and also can use rtmpdump instead if > enable-librtmp is chosen when building ffmpeg. > > I have reviewed rtmp specification, where client and server can notify its > peer of audio/video information

Re: [Libav-user] how to send new metadata to rtmp stream by flv muxer

2016-11-12 17:18 GMT+08:00 qw : > Hi, > > I have one question about ffmpeg lib usage. If rtmp url link is used as > input and ouput address, then flv muxer/demuxer and rtmp plugin will be > chosen to process av stream. At the beginning, one onMetaData message will > be sent to

Re: [Libav-user] how to get video bitrate and frame rate from flv file

2016-11-24 15:31 GMT+08:00 qw : > Hi, > > I have one question about parsing encoding information from flv file. How > to get video bitrate and frame rate from flv file? > > if the metadata have video bitrate , then the stream can output the bitrate. > Thanks! > > Regards > >

Re: [Libav-user] Does ffmpeg supports multiple output files?

2016-11-28 16:39 GMT+08:00 mahesh p : > Hello, > > I am looking for a solution by which one encoder can generate > multiple output files. Can we do this with ffmpeg today? > Do you mean muxers: tee, tee proto if you mean codec, you can refer to Carl's response.

Re: [Libav-user] how encode opencv mat into webm via ffmpeg api.

2016-11-16 9:47 GMT+08:00 PanZhoujin : > Hi all, > > I am trying to encode the file read by opencv VideoCapture into webm. > After searching the official document of ffmpeg, github, and > stackoverflow, I am still far away from my target. > > Can somebody tell

Re: [Libav-user] Does ffmpeg supports multiple output files?

by an > encoder. > if you want to use tee, the tee format is a AVFormatContext, you can use it like write mp4, mov, flv, and so on. tee can split multiple output file use '|' > On Tue, Nov 29, 2016 at 7:47 AM, Steven Liu <lingjiujia...@gmail.com> > wrote: > >> >>

Re: [Libav-user] Does ffmpeg supports multiple output files?

e rtmp stream, you can use like this: ffmpeg -i input -vcodec libx264 -f flv "tee:rtmp://server0/app/stream0|rtmp://server1/live/stream1" > > > On Tue, Nov 29, 2016 at 2:03 PM, Steven Liu <lingjiujia...@gmail.com> > wrote: > >> >> >> 2016-11-29 13:4

Re: [Libav-user] (no subject)

ber/009927.html No, I said to sea sea <2509044...@qq.com> . > > > Sincerely, > -Blake Senftner > 辣计算机思想 > > > On Dec 21, 2016, at 5:17 PM, Steven Liu <lingjiujia...@gmail.com> wrote: > > > > > > > > 2016-12-22 0:32 GMT+08:00 sea <

Re: [Libav-user] 回复： (no subject)

2016-12-22 0:32 GMT+08:00 sea <2509044...@qq.com>: > Thank you very much. I download a .mov file from > http://www.hd-trailers.net/movie/rogue-one-a-star-wars-story/, but get > the same result, avcodec_open2 returns -1. > > Function av_dump_format gives .mov file information as : > Input #0,

Re: [Libav-user] 回复： (no subject)

he code, only changed the input parameters. > > I saw there have many avio_open, which one give you error message? > > -- 原始邮件 ------ > *发件人:* "Steven Liu";<lingjiujia...@gmail.com>; > *发送时间:* 2016年12月22日(星期四) 上午10:00 > *收件人:* "This list

Re: [Libav-user] FLV support for HEVC

2017-03-22 17:10 GMT+08:00 Milan Poon : > We are currently using a Simple RTMP Server (SRS) to stream H.264 video to > clients with ffmpeg / ffplay. To conserve even more bandwidth, we are > considering to switch to HEVC but we know officially RTMP does not

Re: [Libav-user] can ffmpeg support add audio/video stream dynamically

2017-07-10 20:24 GMT+08:00 qw : > Hi, > > I have one question about ffmpeg's one key function. If ffmpeg fetch one > rtmp stream from one rtmp server and no audio stream is available at the > beginning, then ffmpeg only detect video stream without audio stream. > However, after

Re: [Libav-user] does ffmpeg have some video filters that support multiple-video-streams overlay

2017-07-10 20:23 GMT+08:00 qw : > Hi, > > I have checked ffmpeg supported filters, where overlay can put one video on > the top of another, and amix can mix multiple audio streams into one stream. > > Is there any video filter that can put images from several video streams on >

Re: [Libav-user] can ffmpeg support add audio/video stream dynamically

2017-08-01 12:13 GMT+08:00 Steven Liu <lingjiujia...@gmail.com>: > 2017-07-31 14:45 GMT+08:00 qw <applema...@163.com>: >> Hi, >> >>>> I have one question about ffmpeg's one key function. If ffmpeg fetch one >>>> rtmp stream fr

Re: [Libav-user] can ffmpeg support add audio/video stream dynamically

is sent in rtmp stream at the beginning, and after sometime > such as 5 minutes or 1 hours, one new audio stream is added in rtmp stream > > does ffmpeg support the above cases? Maybe not :) > > > > > At 2017-07-12 14:18:27, "Steven Liu" <lingjiujia...@gmail.com>

Re: [Libav-user] 回复： 回复： just wanna get a decode demo for libav

2017-05-13 0:05 GMT+08:00 Steven Liu <lingjiujia...@gmail.com>: > > > 2017-05-12 21:53 GMT+08:00 坚定前行 <power...@qq.com>: > >> Hi, >> >> thanks for the reply but your answer didn't help. first of all, i need to >> register a codec and open i

Re: [Libav-user] just wanna get a decode demo for libav

2017-05-11 18:56 GMT+08:00 坚定前行 : > Hi , > > need help on using latest code FFMPEG 3.3, compile demo in > doc/examples/decode.c with warning 'avcodec_decode_audio4' is deprecated. > and that demo could not work with : Codec not found. > what about the

Re: [Libav-user] 回复： 回复： 回复： 回复： just wanna get a decode demo for libav

2017-05-19 16:35 GMT+08:00 坚定前行 : > > > > -- 原始邮件 -- > *发件人:* "Carl Eugen Hoyos";; > *发送时间:* 2017年5月19日(星期五) 下午4:04 > *收件人:* "This list is about using libavcodec, libavformat, > libavutil,libavdevice and

Re: [Libav-user] improve ffmpeg video

2017-05-23 15:47 GMT+08:00 Tamara Emmerichs : > > Hi everyone > I created a video with png images typing this command: ffmpeg -framerate 1 > PATH/soi%04d.png test.avi > The reproduction works only with ffplay and isn't a good quality. > How can I improve the quality ? > What

Re: [Libav-user] clicking sound ffmpeg api

2017-06-18 17:21 GMT+08:00 יוסף אלון : > Hi, > > I am working on a c code for my program, > And I wish to record a stream from vbox (www.vboxcomm.com). > But i receive the signal with clicking noise using the > "avcodec_decode_audio4" function. You should only use avformat and