[FFmpeg-user] HTML5 live streaming

Tue Apr 23 15:56:57 CEST 2013

On Tuesday, April 23, 2013, Jonathan Isom wrote:

>
>
> 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.
>
>
Sorry for the quick double post. Also found this:
<http://wiki.whatwg.org/wiki/Adaptive_Streaming>

Later

Jonathan

>
>> 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> wrote:
>>
>> > On Sun, Apr 21, 2013 at 7:43 PM, Ricardo Kleemann
>> > <ricardo at americasnet.com> 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
>> > _______________________________________________
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>> > ffmpeg-user at ffmpeg.org
>> > http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>> >
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