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POCrossdevice encoding static file to stream in browser using FFMPEG (segmented h264 ?)
 

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  1. POCrossdevice encoding static file to stream in browser using FFMPEG (segmented h264 ?)
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    <p>I'm building a mediacenter application in NodeJS which is going pretty ok. (you can check it out on Github: <a href="https://github.com/jansmolders86/mediacenterjs" rel="nofollow">https://github.com/jansmolders86/mediacenterjs</a> )</p> <p>I'm using FFMPEG to transcode local (static) movies to a stream which I then send to the browser.</p> <p>At first I used h264 with Flash which worked in browsers, but I really need it to work on Android an iOS (so no Flash) and preferably working on a Raspberry Pi.</p> <p>But getting it to play on all devices is driving me absolutely insane!</p> <p>I have all these bits of the puzzle I've gathered from countless hours reading articles, tutorials and stack overflow posts, which led me to the conclusion that I need to produce the following:</p> <blockquote> <ul> <li>Use video codec H264 to transcode to MP4</li> <li>Move the moovatom '-movflags' to make a MP4 streamable</li> <li>Segment the stream so Apple can play the stream as well.</li> </ul> </blockquote> <p>But getting nowhere with this. Every time I produce a series of FFMPEG settings that either don't work, or work on some devices rather than all. </p> <p>Some of my failed attempt where:</p> <p>My flash attempt -> <strong>Main problem (not running in IOS):</strong></p> <pre><code> '-y','-ss 0','-b 800k','-vcodec libx264','-acodec mp3'\ '-ab 128','-ar 44100','-bufsize 62000', '-maxrate 620k'\ metaDuration,tDuration,'-f flv </code></pre> <p>my HLS attempt -> <strong>Main problem (not running in browser):</strong></p> <pre><code> '-r 15','-b:v 128k','-c:v libx264','-x264opts level=41'\ '-threads 4','-s 640x480','-map 0:v','-map 0:a:0','-c:a mp3'\ '-b:a 160000','-ac 2','-f hls','-hls_time 10','-hls_list_size 6'\ '-hls_wrap 18','-start_number 1' </code></pre> <p>My MP4 attempt -> <strong>Main problem (duration is shortened and the later part of the video is speeding by)</strong></p> <pre><code> '-y','-ss 0','-b 800k','-vcodec libx264','-acodec mp3'\ '-ab 128','-ar 44100','-bufsize 62000', '-maxrate 620k'\ metaDuration,tDuration,'-f mp4','-movflags','frag_keyframe+empty_moov' </code></pre> <p>Second MP4 attempt: -> <strong>Main problem (duration is shortened and the later part of the video is speeding by)</strong></p> <pre><code> '-y','-vcodec libx264','-pix_fmt yuv420p','-b 1200k','-flags +loop+mv4'\ '-cmp 256','-partitions +parti4x4+parti8x8+partp4x4+partp8x8+partb8x8'\ '-me_method hex','-subq 7','-trellis 1','-refs 5','-bf 3','-coder 1'\ '-me_range 16','-g 150','-keyint_min 25','-sc_threshold 40'\ '-i_qfactor 0.71','-acodec mp3','-qmin 10','-qdiff 4','-qmax 51'\ '-ab 128k','-ar 44100','-threads 2','-f mp4','-movflags','frag_keyframe+empty_moov']) </code></pre> <p>Here is an example of the FFMPEG log running with these settings:</p> <pre><code> file conversion error ffmpeg version N-52458-gaa96439 Copyright (c) 2000-2013 the FFmpeg developers built on Apr 24 2013 22:19:32 with gcc 4.8.0 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --e nable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable -libgsm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --ena ble-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwola me --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enabl e-libxvid --enable-zlib libavutil 52. 27.101 / 52. 27.101 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 @ 02427900] non-interleaved AVI Guessed Channel Layout for Input Stream #0.1 : mono Input #0, avi, from 'C:/temp/the avengers.avi': Duration: 00:00:34.00, start: 0.000000, bitrate: 1433 kb/s Stream #0:0: Video: cinepak (cvid / 0x64697663), rgb24, 320x240, 15 tbr, 15 tbn, 15 tbc Stream #0:1: Audio: pcm_u8 ([1][0][0][0] / 0x0001), 22050 Hz, mono, u8, 176 kb/s Please use -b:a or -b:v, -b is ambiguous [libx264 @ 02527c60] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX [libx264 @ 02527c60] profile High, level 2.0 [libx264 @ 02527c60] 264 - core 130 r2274 c832fe9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x26 4.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x133 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=2 lookahead_threads=1 sliced_th reads=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 we ightb=1 open_gop=0 weightp=2 keyint=150 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=120 0 ratetol=1.0 qcomp=0.60 qpmin=10 qpmax=51 qpstep=4 ip_ratio=1.41 aq=1:1.00 Output #0, mp4, to 'pipe:1': Metadata: encoder : Lavf55.3.100 Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 320x240, q=10-51, 1200 kb/s, 15360 tbn, 15 tbc Stream #0:1: Audio: mp3 (i[0][0][0] / 0x0069), 44100 Hz, mono, s16p, 128 kb/s Stream mapping: Stream #0:0 -&gt; #0:0 (cinepak -&gt; libx264) Stream #0:1 -&gt; #0:1 (pcm_u8 -&gt; libmp3lame) Press [q] to stop, [?] for help frame= 106 fps=0.0 q=10.0 size= 1kB time=00:00:06.94 bitrate= 1.4kbits/s frame= 150 fps=149 q=14.0 size= 1kB time=00:00:09.87 bitrate= 1.0kbits/s frame= 191 fps=126 q=16.0 size= 1kB time=00:00:12.61 bitrate= 0.8kbits/s frame= 244 fps=121 q=16.0 size= 2262kB time=00:00:16.14 bitrate=1147.6kbits/s frame= 303 fps=120 q=14.0 size= 2262kB time=00:00:20.08 bitrate= 922.2kbits/s frame= 354 fps=117 q=15.0 size= 3035kB time=00:00:23.48 bitrate=1058.6kbits/s frame= 402 fps=113 q=15.0 size= 3035kB time=00:00:26.67 bitrate= 932.1kbits/s frame= 459 fps=113 q=16.0 size= 4041kB time=00:00:30.43 bitrate=1087.7kbits/s frame= 510 fps=103 q=2686559.0 Lsize= 5755kB time=00:00:33.93 bitrate=1389.3kbits/s video:5211kB audio:531kB subtitle:0 global headers:0kB muxing overhead 0.235111% [libx264 @ 02527c60] frame I:6 Avg QP:10.55 size: 25921 [libx264 @ 02527c60] frame P:245 Avg QP:12.15 size: 14543 [libx264 @ 02527c60] frame B:259 Avg QP:15.55 size: 6242 [libx264 @ 02527c60] consecutive B-frames: 6.1% 73.7% 14.7% 5.5% [libx264 @ 02527c60] mb I I16..4: 19.9% 6.2% 73.9% [libx264 @ 02527c60] mb P I16..4: 6.0% 0.2% 12.0% P16..4: 35.4% 9.6% 16.3% 7.0% 5.6% skip: 7.8% [libx264 @ 02527c60] mb B I16..4: 0.7% 0.0% 4.3% B16..8: 27.6% 17.2% 17.0% direct:17.3% skip:15.9% L0:39.4% L1:43.2% BI:17.4% [libx264 @ 02527c60] final ratefactor: 11.41 [libx264 @ 02527c60] 8x8 transform intra:1.6% inter:4.0% [libx264 @ 02527c60] coded y,uvDC,uvAC intra: 93.0% 97.0% 94.9% inter: 58.4% 58.7% 50.6% [libx264 @ 02527c60] i16 v,h,dc,p: 15% 26% 54% 5% [libx264 @ 02527c60] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 17% 39% 4% 4% 3% 1% 6% 9% [libx264 @ 02527c60] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 34% 21% 4% 2% 2% 2% 2% 5% [libx264 @ 02527c60] i8c dc,h,v,p: 51% 24% 19% 6% [libx264 @ 02527c60] Weighted P-Frames: Y:4.1% UV:1.2% [libx264 @ 02527c60] ref P L0: 68.2% 9.8% 11.0% 5.6% 4.6% 0.8% 0.0% [libx264 @ 02527c60] ref B L0: 87.7% 8.0% 3.9% 0.4% [libx264 @ 02527c60] ref B L1: 97.8% 2.2% [libx264 @ 02527c60] kb/s:1255.36 </code></pre> <p>Lastly this is my node code fireing up FFMPEG. (I use the module Fluent-ffmpeg: <a href="https://github.com/schaermu/node-fluent-ffmpeg" rel="nofollow">https://github.com/schaermu/node-fluent-ffmpeg</a> )</p> <pre><code> var proc = new ffmpeg({ source: movie, nolog: true, timeout:15000}) .addOptions(['-r 15','-b:v 128k','-c:v libx264','-x264opts level=41','-threads 4','-s 640x480','-map 0:v','-map 0:a:0','-c:a mp3','-b:a 160000','-ac 2','-f hls','-hls_time 10','-hls_list_size 6','-hls_wrap 18','-start_number 1 stream.m3u8']) .writeToStream(res, function(retcode, error){ if (!error){ console.log('file has been converted succesfully',retcode .green); }else{ console.log('file conversion error',error .red); } }); </code></pre> <p><strong>So to conclude this very long and code heavy question:</strong></p> <p>I hope this does not come off as a lazy request, but could someone show/explain to me which FFMPEG settings could/should work on all platforms (modern browsers, Android and iOS) producing a stream of a static file which I can send to a HTML5 player.</p> <p><strong>[EDIT] what I need if a generic option isn't available</strong> </p> <p>And if this is not possible as some posts might suggest, I would love to see a set of FFMPEG settings that get's the job done properly as far as mp4 streaming is concerned. (e.g encoding a streamable mp4).</p> <p>The streaming mp4 needs the following</p> <blockquote> <ul> <li>A shifted moovAtom </li> <li>It needs to be h264</li> </ul> </blockquote> <p>Thanks very much for your help!</p>
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