[vlc-devel] multicast stream receiving problems
fayyazkl at gmail.com
Sun Dec 30 11:44:31 CET 2012
Thank you. Yeah i probably missed the fact that it is Christmas time.
I am using direct udp stream from a service of iptv provided by national
telco in my country.
An example url is udp://@239.194.x.x:x
Basically vlc is parsing an m3u file with entries such as this
I will have to examine packet capture for igmp messages and udps. Will
get back on this in day or so.
Though i am not sure if these are interrelated, but simple video
playback of flv file on cross compiled binary has same issues.
An update is that i went through
and used audio output module of DirectX instead of default and it fixed
the flv file. Except that volume bar is not going over 100% (i.e. not
200%. Earlier volume bar was moving but failed to have any actual effect
on the volume along with stuttering in video and audio.
I am going to try this direct x change on multicast streaming as well.
That setup is actually at my work machine only and will have to wait
Thanks for the help so far.
On 12/29/2012 5:28 AM, Warren Young wrote:
> On 12/27/2012 22:32, fayyaz lodhi wrote:
>> No response. Perhaps i haven't shown enough effort.
> It's the Christmas holiday time in the Western world where most of the
> VLC developers are, and probably most of its users, too.
> Consequently, a lot of the people you want to reach aren't reading
> mailing lists right now, and they might ignore a lot of what came in
> over the holiday.
>> If i pull any version of git code (2.1.0 and i even reverted to commits
>> around 2.4.0 release) and cross compile it successfully, the resultant
>> binary has hanging play back on windows i.e. there is buffering and long
>> pauses. Multicast streaming fails to work at all. Where as a simple
>> video file play back also hangs initially and gets smooth after a while.
> What are you using for a multicast source?
> What is the URL you are giving to VLC? I'm not interested so much in
> your IP address scheme as in the URL's overall form.
> If you are using RTSP to set up the multicast stream, can you capture
> the RTSP negotiation and post the text of it here?
> If instead you are directly connecting to a raw UDP or RTP stream
> that's already "out there" on the network, do you see the IGMP group
> join request go out on the wire when you capture packets? Do you see
> the UDP packets coming into the machine after the IGMP request goes out?
> If you are using smart network switches with IGMP snooping enabled, do
> you see the UDP packets stop coming in when you close VLC, after an
> IGMP group leave packet goes out?
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