[FFmpeg-user] HTML5 live streaming

Tue Apr 23 15:51:09 CEST 2013

On Monday, April 22, 2013, Ricardo Kleemann wrote:

> Hi Jonathan,
>
> This is awesome! It worked! :-)
>
> so my next step... how do I do adaptive bitrate? For example, I want to
> have a stream for iPad, a stream for iPhone, Android...

>From what I was able to find, something like this should work:

------>8-----

   #EXTM3U

#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1280000

 <1280000>http://example.com/low.m3u8

 <http://example.com/low.m3u8>#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=2560000

 <2560000>http://example.com/mid.m3u8

#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=7680000

 <7680000>http://example.com/hi.m3u8

 <http://example.com/hi.m3u8>#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=65000,CODECS="mp4a.40.5"

http://example.com/audio-only.m3u8

------>8-----

Found this info at
<http://tools.ietf.org/html/draft-pantos-http-live-streaming-04>.
Haven't tested this yet & not sure howto from home.

> Another question... does m3u8 work for a desktop browser? I do I need an
> embedded player like JWPlayer for desktop?

I believe that  Safari is the only desktop browser that currently supports
HLS. Apple has proposed it for being a standard I believe, however that has
not occur yet. Btw, many find it bad manners to top post.

Hope this helps.

Jonathan

> Thanks so much!
> Ricardo
>
> On Sun, Apr 21, 2013 at 9:30 PM, Jonathan Isom <jeisom at gmail.com<javascript:;>>
> wrote:
>
> > On Sun, Apr 21, 2013 at 7:43 PM, Ricardo Kleemann
> > <ricardo at americasnet.com <javascript:;>> wrote:
> > > That's great, I didn't realize it.
> > >
> > > I'm trying to convert the input to h.264 + AAC and output to the
> > segmenter
> > > but it's not working. Can you help me find the error in the command?
> > >
> > > ffmpeg -loglevel debug -threads 4 -i "rtmp://server1/live/livestream1"
> > > -i_qfactor 0.71 -qcomp 0.6 -qmin 10 -qmax 63 -qdiff 4 -trellis 0
> -vcodec
> > > libx264 -s 480x270 -b:v 512k -b:a 56k -ar 22050 -map 0 -f segment
> > > -segment_time 10 -segment_list live.m3u8 -segment_list_flags +live
> > > live_%05d.ts
> > >
> >
> > Here is the command I use which works with my iPad 3rd Gen. I cd into
> > the directory that I want the files to load from on the server. My
> > case is "/var/www/localhost/htdocs/stream/" which is
> > "http://domain/stream/". You probably should lose all the extra
> > options. for realtime encoding add "-re" to the command. You will want
> > to change RESOLUTION BITRATE & VIDSOURCE to what you need. Also below
> > is an example html file.
> > This is with ffmpeg git from a week ago. notice the "-hls*" options
> > instead of -segment.* options.
> >
> > ffmpeg  -i VIDSOURCE -y  -c:v libx264 -b:v BITRATE -vprofile baseline
> > -preset medium -x264opts level=41 -threads 4 -s RESOLUTION -map 0:v
> > -map 0:a:0  -c:a libfaac -b:a 160000 -ac 2   -hls_time 10
> > -hls_list_size 6 -hls_wrap 18 -start_number 1 stream.m3u8
> >
> > index.htm:
> > <html>
> > <body>
> >    <video  height="531"  width="945" autoplay="autoplay"
> > controls="controls">
> >     <source src="stream.m3u8" />
> >    </video>
> > </body>
> > </html>
> >
> > Hope this is helpful.
> >
> > Jonathan
> > _______________________________________________
> > ffmpeg-user mailing list
> > ffmpeg-user at ffmpeg.org <javascript:;>
> > http://ffmpeg.org/mailman/listinfo/ffmpeg-user
> >
> >
> > ------------------------------------------------------
> > Powered by Xeams. Visit xeams.com for more information
> > ------------------------------------------------------
> >
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org <javascript:;>
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>