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mythweb and the Nokia N95

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bert at bertenselena

Jun 15, 2008, 1:09 AM

Post #1 of 13 (4756 views)
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mythweb and the Nokia N95

Hello all,

Has anyone on this list played with streaming video to the Nokia N95?
I've been trying to get it to work from mythweb. Flash video works
fine to a webbrowser. I had to disable the wap support on mythweb to
get the full html version on my mobile

The N95 supports flash since the last firmware release. So I was
hoping for a lucky break. Unfortunately, it didn't happen.

The N95's webbrowser supports youtube just fine. The movies are shown
in realplayer. Any chance to get this working with mythweb?

Can anyone with more detailed knowledge of flash and/or mythweb comment on this?

Regards,

Bert

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bert at bertenselena

Jun 18, 2008, 12:30 PM

Post #2 of 13 (4633 views)
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Re: mythweb and the Nokia N95 [In reply to]

Hello all,

Unfortunately, no response so far from other N95 users. But is there
anyone who has succesfully streamed to any other mobile phone from
mythweb?

Regards,

Bert
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xavier.hervy at bluebottle

Jun 18, 2008, 12:52 PM

Post #3 of 13 (4636 views)
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Re: mythweb and the Nokia N95 [In reply to]

Bert Haverkamp wrote:
> Hello all,
>
> Has anyone on this list played with streaming video to the Nokia N95?
> I've been trying to get it to work from mythweb. Flash video works
> fine to a webbrowser. I had to disable the wap support on mythweb to
> get the full html version on my mobile
>
> The N95 supports flash since the last firmware release. So I was
> hoping for a lucky break. Unfortunately, it didn't happen.
>
> The N95's webbrowser supports youtube just fine. The movies are shown
> in realplayer. Any chance to get this working with mythweb?
>
> Can anyone with more detailed knowledge of flash and/or mythweb comment on this?
>
> Regards,
>
> Bert
>
>
Hi Bert,

Does mythweb have flash video support ? I never seen this feature, is it
in trunk?

I have a n95 too and I like to have my recording available on my phone
but not in streaming, so I can watch them at any moment.
I wrote a script to export the videos. I am using video center (as
reuters, Sony, youtube) to display the video (see
http://videoservicedirectory.nokia.com/videoservicedirectory/internet_videos/reuters.vcfg
). And create the rss feed for each series. I would like to integrate it
from mythweb at some point.

Does any body is working on a daemon to deal with the transcoding. Would
be nice to have a service ton do the transcoding and be able to
configure it from mythtv or mythweb.

Regards,
Xavier

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xavier.hervy at bluebottle

Jun 18, 2008, 3:51 PM

Post #4 of 13 (4634 views)
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Re: mythweb and the Nokia N95 [In reply to]

Bert Haverkamp wrote:
> Hello all,
>
> Unfortunately, no response so far from other N95 users. But is there
> anyone who has succesfully streamed to any other mobile phone from
> mythweb?
>
> Regards,
>
> Bert
>
I just had a look to the flashplayer in mythweb.
I believe it doesn't work because use flv format over http when youtube
use 3gp over rtsp.
Xavier

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fatgerman at ntlworld

Jun 18, 2008, 4:08 PM

Post #5 of 13 (4618 views)
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Re: mythweb and the Nokia N95 [In reply to]

On Wednesday 18 June 2008 23:51:57 Xavier Hervy wrote:
> Bert Haverkamp wrote:
> > Hello all,
> >
> > Unfortunately, no response so far from other N95 users. But is there
> > anyone who has succesfully streamed to any other mobile phone from
> > mythweb?
> >
> > Regards,
> >
> > Bert
> >
> I just had a look to the flashplayer in mythweb.
> I believe it doesn't work because use flv format over http when youtube
> use 3gp over rtsp.
> Xavier

That's most likely correct. Most mobiles will only play 3gp format files (some will play m4v too), and many will only support rtsp for streaming. I think what youtube do for mobile content is transcode to H.263 with AMR audio in a 3gp container (quite possibly on-the-fly), though I'd be very pleased to be proven wrong on that count. Perhaps someone with an iPhone would know?

Most mobiles are pretty fussy about what they will play, though the N95 is far less fussy than most. I've seen some that will only play a file that's 15fps for instance. You could try transcoding to QVGA (320x240), H.263 with AMR-NB audio and try streaming that - that type of file will play on almost anything (hell my Motorola Slivr will play that, and that's a *rubbish* phone if ever there was one), and then you'd be able to narrow it down to the file format or the streaming protocol.

Mark

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masterclc at gmail

Jun 18, 2008, 9:25 PM

Post #6 of 13 (4630 views)
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Re: mythweb and the Nokia N95 [In reply to]

On Wed, Jun 18, 2008 at 1:30 PM, Bert Haverkamp <bert [at] bertenselena> wrote:
> Hello all,
>
> Unfortunately, no response so far from other N95 users. But is there
> anyone who has succesfully streamed to any other mobile phone from
> mythweb?
>
> Regards,
>
> Bert

Someone in my LUG did some work on getting streaming to work on the iPhone:
http://chriscarey.com/projects/mythtv/iphone/

-Chad
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xavier.hervy at bluebottle

Jun 19, 2008, 9:05 AM

Post #7 of 13 (4586 views)
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Re: mythweb and the Nokia N95 [In reply to]

On Thu, 2008-06-19 at 00:08 +0100, Mark Greenwood wrote:
<snip>
> That's most likely correct. Most mobiles will only play 3gp format files (some will play m4v too), and many will only support rtsp for streaming. I think what youtube do for mobile content is transcode to H.263 with AMR audio in a 3gp container (quite possibly on-the-fly), though I'd be very pleased to be proven wrong on that count. Perhaps someone with an iPhone would know?
>
> Most mobiles are pretty fussy about what they will play, though the N95 is far less fussy than most. I've seen some that will only play a file that's 15fps for instance. You could try transcoding to QVGA (320x240), H.263 with AMR-NB audio and try streaming that - that type of file will play on almost anything (hell my Motorola Slivr will play that, and that's a *rubbish* phone if ever there was one), and then you'd be able to narrow it down to the file format or the streaming protocol.
>
> Mark
Hi,
I modified mythweb to produce mp4 file (n95 compliant) when requested
http://server/mythweb/stream/channel_startime.mp4 the same way mythweb
does with flv, unfortunately ffmpeg complain:
muxer does not support non seekable output

my command is :
ffmpeg -y -i /home/mythtv/recordings/1037_20080510130000.nuv -s 320x240
-r 15 -f mp4 -ac 2 -ar 24000 -ab 64 -b 250000 /dev/stdout
If i replace /dev/stdout by a file it work great (even if it is
complaining about a low bitrate) same with 3gp
any idea ?
Xavier

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xavier.hervy at bluebottle

Jun 19, 2008, 9:09 AM

Post #8 of 13 (4594 views)
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Re: mythweb and the Nokia N95 [In reply to]

On Wed, 2008-06-18 at 22:25 -0600, Chad wrote:
> On Wed, Jun 18, 2008 at 1:30 PM, Bert Haverkamp <bert [at] bertenselena> wrote:
> > Hello all,
> >
> > Unfortunately, no response so far from other N95 users. But is there
> > anyone who has succesfully streamed to any other mobile phone from
> > mythweb?
> >
> > Regards,
> >
> > Bert
>
> Someone in my LUG did some work on getting streaming to work on the iPhone:
> http://chriscarey.com/projects/mythtv/iphone/
>
> -Chad

Nice! the interface does not work with the n95 neither the stream
Xavier

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masterclc at gmail

Jun 19, 2008, 9:46 AM

Post #9 of 13 (4596 views)
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Re: mythweb and the Nokia N95 [In reply to]

On Thu, Jun 19, 2008 at 10:09 AM, xavier hervy
<xavier.hervy [at] bluebottle> wrote:
> On Wed, 2008-06-18 at 22:25 -0600, Chad wrote:
>> On Wed, Jun 18, 2008 at 1:30 PM, Bert Haverkamp <bert [at] bertenselena> wrote:
>> > Hello all,
>> >
>> > Unfortunately, no response so far from other N95 users. But is there
>> > anyone who has succesfully streamed to any other mobile phone from
>> > mythweb?
>> >
>> > Regards,
>> >
>> > Bert
>>
>> Someone in my LUG did some work on getting streaming to work on the iPhone:
>> http://chriscarey.com/projects/mythtv/iphone/
>>
>> -Chad
>
> Nice! the interface does not work with the n95 neither the stream
> Xavier
>

Yeah, I read somewhere that the iPhone uses hardware decoding when
quicktime was the player, so I'm sure it's fairly hardware specific.
But the code is there so I assume most of the "framework" can be used
and just change/add some stuff to make it also work on the n95. I was
a nats ball-sack away from from buying an n95 but at the last second
decided not to since the iPhone seems a little more along the lines of
what I need; and I have yet to buy the iPhone :D I would love to see
some MythTV support build for this device, or even better, built for
multiple mobile devices (especially the OpenMoko).

-Chad
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xavier.hervy at bluebottle

Jun 19, 2008, 11:34 AM

Post #10 of 13 (4581 views)
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Re: mythweb and the Nokia N95 [In reply to]

Chad wrote:
>
> Yeah, I read somewhere that the iPhone uses hardware decoding when
> quicktime was the player, so I'm sure it's fairly hardware specific.
>
The format might be playable one the n95 (the resolution might be to
high though), but this is not streaming.
It is mp4 over http when the n95 require rtsp
> But the code is there so I assume most of the "framework" can be used
> and just change/add some stuff to make it also work on the n95. I was
>
There is no framework, only a nice interface to "download" video file.
Where is the framework to encode the video on the fly ? (if possible)

Xavier

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fatgerman at ntlworld

Jun 19, 2008, 12:34 PM

Post #11 of 13 (4572 views)
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Re: mythweb and the Nokia N95 [In reply to]

On Thursday 19 June 2008 17:05:04 xavier hervy wrote:
> On Thu, 2008-06-19 at 00:08 +0100, Mark Greenwood wrote:
> <snip>
> > That's most likely correct. Most mobiles will only play 3gp format files (some will play m4v too), and many will only support rtsp for streaming. I think what youtube do for mobile content is transcode to H.263 with AMR audio in a 3gp container (quite possibly on-the-fly), though I'd be very pleased to be proven wrong on that count. Perhaps someone with an iPhone would know?
> >
> > Most mobiles are pretty fussy about what they will play, though the N95 is far less fussy than most. I've seen some that will only play a file that's 15fps for instance. You could try transcoding to QVGA (320x240), H.263 with AMR-NB audio and try streaming that - that type of file will play on almost anything (hell my Motorola Slivr will play that, and that's a *rubbish* phone if ever there was one), and then you'd be able to narrow it down to the file format or the streaming protocol.
> >
> > Mark
> Hi,
> I modified mythweb to produce mp4 file (n95 compliant) when requested
> http://server/mythweb/stream/channel_startime.mp4 the same way mythweb
> does with flv, unfortunately ffmpeg complain:
> muxer does not support non seekable output
>
> my command is :
> ffmpeg -y -i /home/mythtv/recordings/1037_20080510130000.nuv -s 320x240
> -r 15 -f mp4 -ac 2 -ar 24000 -ab 64 -b 250000 /dev/stdout
> If i replace /dev/stdout by a file it work great (even if it is
> complaining about a low bitrate) same with 3gp
> any idea ?
> Xavier

I'm no ffmpeg expert - but I know that with 3gp files you have to write some information into the header, but this information is only known once you have completed the encoding. So you have to encode the file, leaving space for the header, and then write the header once you have finished. This would tally with the error message - in that ffmpeg would be trying to write the file and then seek back to the start of the file in order to write the header. Obviously if the file is 'stdout' it can't do this. In this case I can't see that writing 3gp to stdout could ever work. Which is a shame.

On the N95 subject I spoke to the expert at work today. The N95 will play Flash natively although in what container he wasn't certain, but it definitely requires rtsp for streaming - http will not work. Any Apache experts out there..??

Mark

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xavier.hervy at bluebottle

Jun 20, 2008, 4:30 AM

Post #12 of 13 (4552 views)
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Re: mythweb and the Nokia N95 [In reply to]

On Thu, 2008-06-19 at 20:34 +0100, Mark Greenwood wrote:
>
> I'm no ffmpeg expert - but I know that with 3gp files you have to write some information into the header, but this information is only known once you have completed the encoding. So you have to encode the file, leaving space for the header, and then write the header once you have finished. This would tally with the error message - in that ffmpeg would be trying to write the file and then seek back to the start of the file in order to write the header. Obviously if the file is 'stdout' it can't do this. In this case I can't see that writing 3gp to stdout could ever work. Which is a shame.
>
> On the N95 subject I spoke to the expert at work today. The N95 will play Flash natively although in what container he wasn't certain, but it definitely requires rtsp for streaming - http will not work. Any Apache experts out there..??
>
> Mark

I am not an expert neither, but I don't think apache can do that. We
need a dedicated streaming server.

I did try bbc web site, the flash video work on the n95, but I can't
find the way they do it (presumably rtsp)
xavier

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fatgerman at ntlworld

Jun 20, 2008, 11:18 AM

Post #13 of 13 (4533 views)
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Re: mythweb and the Nokia N95 [In reply to]

On Friday 20 June 2008 12:30:24 xavier hervy wrote:
> On Thu, 2008-06-19 at 20:34 +0100, Mark Greenwood wrote:
> >
> > I'm no ffmpeg expert - but I know that with 3gp files you have to write some information into the header, but this information is only known once you have completed the encoding. So you have to encode the file, leaving space for the header, and then write the header once you have finished. This would tally with the error message - in that ffmpeg would be trying to write the file and then seek back to the start of the file in order to write the header. Obviously if the file is 'stdout' it can't do this. In this case I can't see that writing 3gp to stdout could ever work. Which is a shame.
> >
> > On the N95 subject I spoke to the expert at work today. The N95 will play Flash natively although in what container he wasn't certain, but it definitely requires rtsp for streaming - http will not work. Any Apache experts out there..??
> >
> > Mark
>
> I am not an expert neither, but I don't think apache can do that. We
> need a dedicated streaming server.

In which case we probably want this:

https://helix-server.helixcommunity.org/

I've had some experience with this and it's compatible with every mobile device I've used it with, but I've no idea if it could be integrated into a myth setup.

Mark

>
> I did try bbc web site, the flash video work on the n95, but I can't
> find the way they do it (presumably rtsp)
> xavier

>
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