[FFmpeg-user] FFMPEG / RTMP/FLV not in Real Time
Karim Sadan
karim.sadan at gmail.com
Tue Sep 2 16:57:45 CEST 2014
Hello team,
I need some help to stream a live feed to Youtube.
I use ffmpeg to stream a Decklink input (I use an Avisynth script to do
that, no buffer problem with that). When I use it to record into a file
everything is OK, I can record in Real Time (25 fps) (in every format).
I try to stream a 1920/1080 at 25fps to Youtube at 3000Kbps.
See my command line:
*ffmpeg.exe -y -loglevel verbose -i mux_for_pgm1.avs -s 1920x1080 -c:v
libx264 -pix_fmt yuv420p -preset ultrafast -b:v 3000k -c:a aac -strict -2
-b:a 128k -r:a 44100 -f flv rtmp://a.rtmp.youtube.com/live2/ID
<http://a.rtmp.youtube.com/live2/ID>*
And the report:
*ffmpeg version N-66012-g97b8809 Copyright (c) 2000-2014 the FFmpeg
developers built on Sep 1 2014 00:07:41 with gcc 4.8.3 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-iconv --enable-libass --enable-libbluray
--enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme
--enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc
--enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp
--enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid
--enable-decklink --enable-zlib libavutil 54. 7.100 / 54. 7.100
libavcodec 56. 1.100 / 56. 1.100 libavformat 56. 3.100 / 56.
3.100 libavdevice 56. 0.100 / 56. 0.100 libavfilter 5. 0.103 /
5. 0.103 libswscale 3. 0.100 / 3. 0.100 libswresample 1.
1.100 / 1. 1.100 libpostproc 53. 0.100 / 53. 0.100Routing option
strict to both codec and muxer layerGuessed Channel Layout for Input
Stream #0.1 : stereoInput #0, avisynth, from
'C:\ReckOrder\Sources\AVS\mux_for_pgm1.avs': Duration: 111:06:40.00,
start: 0.000000, bitrate: N/A Stream #0:0: Video: rawvideo (YUY2 /
0x32595559), yuyv422, 1920x1080, 25 fps, 25 tbr, 25 tbn, 25 tbc Stream
#0:1: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536
kb/sParsing...Parsed protocol: 0Parsed host : a.rtmp.youtube.com
<http://a.rtmp.youtube.com>Parsed app : live2RTMP_Connect1, ...
connected, handshakingHandShake: Type Answer : 03HandShake: Server Uptime
: 0HandShake: FMS Version : 4.0.0.1HandShake: Handshaking
finished....RTMP_Connect1, handshakedInvoking connectHandleServerBW: server
BW = 2500000HandleClientBW: client BW = 10000000 2HandleChangeChunkSize,
received: chunk size change to 256RTMP_ClientPacket, received: invoke 240
bytes(object begin)Property: <Name: no-name., STRING:
_result>Property: <Name: no-name., NUMBER: 1.00>Property:
<Name: no-name., OBJECT>(object begin)Property:
<Name: fmsVer, STRING: FMS/3,5,3,824>Property: <Name:
capabilities, NUMBER: 127.00>Property: <Name: mode,
NUMBER: 1.00>(object end)Property: <Name: no-name.,
OBJECT>(object begin)Property: <Name: level, STRING:
status>Property: <Name: code, STRING:
NetConnection.Connect.Success>Property: <Name: description,
STRING: Connection succeeded.>Property: <Name: objectEncoding,
NUMBER: 0.00>Property: <Name: data, ECMA_ARRAY>(object
begin)Property: <Name: version, STRING: 3,5,3,824>(object
end)(object end)(object end)HandleInvoke, server invoking
<_result>HandleInvoke, received result for method call <connect>Invoking
releaseStreamInvoking FCPublishInvoking createStreamRTMP_ClientPacket,
received: invoke 21 bytes(object begin)Property: <Name: no-name.,
STRING: onBWDone>Property: <Name: no-name., NUMBER:
0.00>Property: NULL(object end)HandleInvoke, server invoking
<onBWDone>Invoking _checkbwRTMP_ClientPacket, received: invoke 29
bytes(object begin)Property: <Name: no-name., STRING:
_result>Property: <Name: no-name., NUMBER: 4.00>Property:
NULLProperty: <Name: no-name., NUMBER: 1.00>(object
end)HandleInvoke, server invoking <_result>HandleInvoke, received result
for method call <createStream>Invoking publishRTMP_ClientPacket, received:
invoke 73 bytes(object begin)Property: <Name: no-name.,
STRING: onStatus>Property: <Name: no-name., NUMBER:
0.00>Property: NULLProperty: <Name: no-name., OBJECT>(object
begin)Property: <Name: level, STRING: status>Property:
<Name: code, STRING: NetStream.Publish.Start>(object
end)(object end)HandleInvoke, server invoking <onStatus>HandleInvoke,
onStatus: NetStream.Publish.Start[graph 0 input from stream 0:0 @ 04189de0]
w:1920 h:1080 pixfmt:yuyv422 tb:1/25 fr:25/1 sar:0/1
sws_param:flags=2[scaler for output stream 0:0 @ 02a0f4e0] w:1920 h:1080
flags:'0x4' interl:0[scaler for output stream 0:0 @ 02a0f4e0] w:1920 h:1080
fmt:yuyv422 sar:0/1 -> w:1920 h:1080 fmt:yuv420p sar:0/1 flags:0x4[graph 1
input from stream 0:1 @ 041b1940] tb:1/48000 samplefmt:s16 samplerate:48000
chlayout:0x3[audio format for output stream 0:1 @ 041b1a40] auto-inserting
filter 'auto-inserted resampler 0' between the filter 'Parsed_anull_0' and
the filter 'audio format for output stream 0:1'[auto-inserted resampler 0 @
041b1ac0] ch:2 chl:stereo fmt:s16 r:48000Hz -> ch:2 chl:stereo fmt:fltp
r:48000Hz[libx264 @ 0417eaa0] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX[libx264 @ 0417eaa0] profile Constrained Baseline, level
4.0[libx264 @ 0417eaa0] 264 - core 142 r2479 dd79a61 - H.264/MPEG-4 AVC
codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html
<http://www.videolan.org/x264.html> - options: cabac=0 ref=1 deblock=0:0:0
analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16
chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1
chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0
decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0
weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=abr
mbtree=0 bitrate=3000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4
ip_ratio=1.40 aq=0Output #0, flv, to
'rtmp://a.rtmp.youtube.com/live2/karim.sadan.9g7u-sxwc-frfd-5fbw
<http://a.rtmp.youtube.com/live2/karim.sadan.9g7u-sxwc-frfd-5fbw>':
Metadata: encoder : Lavf56.3.100 Stream #0:0: Video: h264
(libx264) ([7][0][0][0] / 0x0007), yuv420p, 1920x1080, q=-1--1, 3000 kb/s,
25 fps, 1k tbn, 25 tbc Metadata: encoder : Lavc56.1.100
libx264 Stream #0:1: Audio: aac ([10][0][0][0] / 0x000A), 48000 Hz,
stereo, fltp, 128 kb/s Metadata: encoder : Lavc56.1.100
aacStream mapping: Stream #0:0 -> #0:0 (rawvideo (native) -> h264
(libx264)) Stream #0:1 -> #0:1 (pcm_s16le (native) -> aac (native))Press
[q] to stop, [?] for helpframe= 11 fps=2.5 q=21.0 size= 437kB
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frame= 527 fps=5.9 q=39.0 size= 8450kB time=00:00:21.03
bitrate=3290.9kbits/s frame= 530 fps=5.9 q=38.0 size= 8499kB
time=00:00:21.14 bitrate=3293.3kbits/s frame= 534 fps=5.9 q=38.0
size= 8553kB time=00:00:21.31 bitrate=3287.8kbits/s frame= 539
fps=6.0 q=39.0 size= 8595kB time=00:00:21.50 bitrate=3274.3kbits/s
frame= 542 fps=6.0 q=37.0 size= 8649kB time=00:00:21.63
bitrate=3275.2kbits/s frame= 546 fps=6.0 q=37.0 size= 8695kB
time=00:00:21.78 bitrate=3270.2kbits/s frame= 551 fps=6.0 q=37.0
size= 8742kB time=00:00:21.99 bitrate=3255.9kbits/s [flv @ 0417dc20]
Failed to update header with correct duration.[flv @ 0417dc20] Failed to
update header with correct filesize.frame= 556 fps=6.0 q=-1.0 Lsize=
8834kB time=00:00:22.24 bitrate=3253.9kbits/s video:8455kB audio:351kB
subtitle:0kB other streams:0kB global headers:0kB muxing overhead:
0.324278%Input file #0 (C:\ReckOrder\Sources\AVS\mux_for_pgm1.avs): Input
stream #0:0 (video): 557 packets read (2305843200 bytes); 556 frames
decoded; Input stream #0:1 (audio): 555 packets read (4262400 bytes); 555
frames decoded (1065600 samples); Total: 1112 packets (2310105600 bytes)
demuxedOutput file #0
(rtmp://a.rtmp.youtube.com/live2/karim.sadan.9g7u-sxwc-frfd-5fbw
<http://a.rtmp.youtube.com/live2/karim.sadan.9g7u-sxwc-frfd-5fbw>): Output
stream #0:0 (video): 556 frames encoded; 556 packets muxed (8657661 bytes);
Output stream #0:1 (audio): 1040 frames encoded (1064960 samples); 1041
packets muxed (358992 bytes); Total: 1597 packets (9016653 bytes)
muxedInvoking FCUnpublishInvoking deleteStream[libx264 @ 0417eaa0] frame
I:3 Avg QP:30.33 size: 25254[libx264 @ 0417eaa0] frame P:553 Avg
QP:39.15 size: 15518[libx264 @ 0417eaa0] mb I I16..4: 100.0% 0.0%
0.0%[libx264 @ 0417eaa0] mb P I16..4: 25.4% 0.0% 0.0% P16..4: 14.5%
0.0% 0.0% 0.0% 0.0% skip:60.1%[libx264 @ 0417eaa0] final ratefactor:
35.67[libx264 @ 0417eaa0] coded y,uvDC,uvAC intra: 9.8% 9.6% 0.9% inter:
5.0% 2.6% 0.0%[libx264 @ 0417eaa0] i16 v,h,dc,p: 42% 27% 21% 11%[libx264 @
0417eaa0] i8c dc,h,v,p: 81% 10% 8% 1%[libx264 @ 0417eaa0] kb/s:3114.05*
It's impossible to stay at 25 fps, the framerate constantly decrease. And
the cpu is not use, so I assume that my computer is fine. I have a i5-2500k
at 3.30Ghz / 8 GB RAM.
I have a pretty good hardware to do that, and it works perfectly with Adobe
Flash Media Encoder but I don't want to use it.
I tried every profile, with buffer/no buffer, -r 25, -re... A lot of
parameters without success. It's only ok at 800Kbs with a low quality. But
like I said, it's ok with Flash Media Encoder.
The issue is the same if I take a file in input or If I pipe the process to
an other ffmpeg.
Maybe something is wrong in the rtmp demux. Does anyone have an idea ?
Thanks for your help.
Karim
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