#5574: unacceptable latency to convert rtsp to hls with ffmpeg
-------------------------------------+-------------------------------------
Reporter: fanniewang | Type:
Status: new | sponsoring request
Component: | Priority: important
undetermined | Version: 2.7.3
Keywords: ffmpeg | Blocked By:
version 2.7.git | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
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Summary of the bug:
We need to play our rtsp live streaming in ios, so we used ffmpeg to
convert rtsp to hls, and then publish the m3u8 file by nginx.
But after then, we see huge latency when play it, pls help to check the
follow command, and help to fix the latency for me, thanks a lot.
ffmpeg -i rtsp://kanq:[email protected] -c:v copy -preset ultrafast
-fflags flush_packets -tune zerolatency -an -g 1 -flags -global_header -f
hls -hls_time 1 -hls_list_size 3 -hls_wrap 3 play280.m3u8
[root@localhost ffmpeg-3.0.2-64bit-static]# ffmpeg -v
ffmpeg version 2.7.git Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.8.3 (GCC) 20140911 (Red Hat 4.8.3-9)
configuration: --prefix=/wlian/ffmpeg_build --extra-
cflags=-I/wlian/ffmpeg_build/include --extra-
ldflags=-L/wlian/ffmpeg_build/lib --bindir=/wlian/bin --extra-libs=-ldl
--enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libvpx --enable-libfaac --enable-libmp3lame --enable-libtheora
--enable-libvorbis --enable-libx264 --enable-libvo-aacenc --enable-libxvid
--enable-ffplay --enable-postproc --enable-nonfree --enable-avfilter
--enable-pthreads --enable-gpl
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 58.100 / 56. 58.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 37.100 / 5. 37.100
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
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Ticket URL: <https://trac.ffmpeg.org/ticket/5574>
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