我正在使用ffmpeg来获取视频源并将其直播到Flash中的浏览器。
这是代码（使用expressjs）：
app.get('/stream', function(req, res) {
var command = spawn('ffmpeg', ['-re','-i','video.avi','-c:v','libx264','-c:a','libfaac','-ar',44100,'-f','flv','-']);
res.setHeader("Accept-Ranges", "bytes");
res.setHeader("Content-Type", "video/x-flv");
command.stdout.pipe(res);
});
编辑：它使用的命令是：
ffmpeg -re -i video.avi -c:v libx264 -c:a libfaac -ar 44100 -f flv -
如果我直接在浏览器中加载此URL，它会下载flv文件，我可以在VLC播放器中播放它。但是，当我在像JWPlayer这样的播放器中使用它时，甚至试图简单地嵌入时，它都不会显示任何内容。
知道我在这里可能缺少什么吗？
谢谢！
编辑：这是ffmpeg的输出，在此之后它只是在编码时继续的字节。
ffmpeg version N-52420-gfc69033 Copyright (c) 2000-2013 the FFmpeg developers
built on Apr 25 2013 17:10:30 with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libaacplus --enable-libass --enable-libcelt --enable-libfaac --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-openssl --enable-libopus --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --prefix=/usr/local
libavutil 52. 27.100 / 52. 27.100
libavcodec 55. 6.100 / 55. 6.100
libavformat 55. 3.100 / 55. 3.100
libavdevice 55. 0.100 / 55. 0.100
libavfilter 3. 60.101 / 3. 60.101
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
[avi @ 0x7ffb12004800] non-interleaved AVI
Input #0, avi, from 'video.avi':
Metadata:
encoder : AVI-Mux GUI 1.17.8.3, Feb 16 201019:42:50
JUNK :
Duration: 01:58:39.79, start: 0.000000, bitrate: 1710 kb/s
Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv420p, 720x304 [SAR 1:1 DAR 45:19], 29.97 tbr, 29.97 tbn, 29.98 tbc
Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), fltp, 192 kb/s
Metadata:
title : videotest
[libx264 @ 0x7ffb12022000] using SAR=1/1
[libx264 @ 0x7ffb12022000] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
[libx264 @ 0x7ffb12022000] profile High, level 3.0
[libx264 @ 0x7ffb12022000] 264 - core 125 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, flv, to 'pipe:':
Metadata:
JUNK :
encoder : Lavf55.3.100
Stream #0:0: Video: h264 ([7][0][0][0] / 0x0007), yuv420p, 720x304 [SAR 1:1 DAR 45:19], q=-1--1, 1k tbn, 29.97 tbc
Stream #0:1: Audio: aac ([10][0][0][0] / 0x000A), 44100 Hz, 5.1, s16, 128 kb/s
Metadata:
title : videotest
Stream mapping:
Stream #0:0 -> #0:0 (mpeg4 -> libx264)
Stream #0:1 -> #0:1 (ac3 -> libfaac)
Press [q] to stop, [?] for help
FLVme= -43 fps= 28 q=0.0 size= 0kB time=00:00:01.48 bitrate= 2.2kbits/s
videodatarateionframerate@=?Q??s
audiodatarate@_@audiosamplerate@刀audiosamplesize@0stereo
audiocodecid@$JUNKencoder
Lavf55.3.10filesize 8 -d??gd??@?'?c1--?h???"??0 ?B?????E???H??,? ?#??x264 - core 125 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00?Re??g?$?<<