The VideoLAN Forums

well it doesn't work either...

what could be the reason for this. As I said the quick time player plays the SDP file without a problem. Suggesting that there is nothing wrong with the RTP feed..

please share your valuable ideas..

thanks.

Hi, I was trying to play a SDP file, generated from Helix Encoder on the same encoding machine but it doesn't play. It gives out below error. main debug: adding item `NDTVGood.sdp' ( C:\high\NDTVGood.sdp ) qt4 debug: Adding a new MRL to recent ones: C:\high\NDTVGood.sdp main debug: rebuilding array ...

Thanks for the tips you have provided.

Lotesdelere: do you have an idea of what ffmpeg parameters to be adjusted in preferences...

hi, i assume it uses 'libavcodec' provided by ffmpeg, to transcode from mpeg2 to mpeg4. i have done the testing on the same machine, same input file, same encoding parameters (bit rate/framre rate/size) but both produced drastically different clips. I just need to know why there is such a difference...

no idea about this ?

Just want to know why there is a difference in quality when both VLC and FFMPEG use same encoding parameters ?

appreciate any feedback on this.

thanks.

Hi, i was testing transcoding of a MPEG PS with mpeg 4 codec with VLC and FFMPEG separately. Though i select the encoder as FFMPEG with VLC, the quality is very poor comparing with the FFMPEG encoded clip. also i'm very much bandwidth restricted and that's why i'm keeping 200kbps/18 fps, i simply ca...

Well after carefully read the VLC help, found that only one elementary stream will be put out by default so we have to use --sout-all :) then the code would look like this; :sout-all: sout=#duplicate{dst="transcode{vcodec=mp4v,width=320,height=240,vb=350,acodec=mp4a,ab=64,channels=2,samplerate=...

Hi, I'm to use the below code for multiple streaming. :sout=#duplicate{dst="transcode{vcodec=mp4v,width=320,height=240,vb=350,acodec=mp4a,ab=64,channels=2,samplerate=44100}:rtp{dst=10.48.233.38,port-video=7702,port-audio=7704,sdp=file://c:\vlcsdp\demux1.sdp}",select="program=1",d...

I tested with OSPREY 440 Capture card, but the results are not good ! The capture card works fine with other Software (like Helix Producer) but when used with VLC the frame rate was very low.. (1,2) even though i selected it to a value of 25 in both device HW setting and in VLC (when transcoding) Ho...

To add something more.. I'm planning to use VLC to deumux a transport stream consisting 14/15 programs.. (it'll be 40 Mbps TS stream) but the testing i've done involved a stream with 3 programs and VLC did consume lot of CPU.. if anyone having an idea or have some experience on how to optimize the C...

well i was able to get this done..
The problem i had was with the program numbering.. select="program=1" the programs are numbered as 1,2,3 etc.. in PMT (lucky that VLC provides a good verbose log.. )
so if anyone having the same issue.. there is a way out..

thanks for your advices. .

Thanks Drain... for your advices.. :) I'll surely try your methods.. the thing is I want the demuxing to be happen in real time and then transcode. well i got the VLC solution to a working model.. so that's why I'm still trying to get it sorted with VLC.. anyway it's nice to have an alternative.. ch...

above has some spelling mistakes, however it still produces the same error.. no sout stream module matching "transcode" could be loaded -- but the transcode module is a standard stream out module right ? ( i looked in the preferences in GUI and it also shows that transcode module is there ...

the above command doesn't work :oops: anyway i went through some of the past posts and streaming guide. Found that to select a program (using select="program=100" ) i need to use the duplicate module at my output. However with duplicate module i'm unable to use the transocde module below i...

after some searching able to find that VLC can do this :) I'm yet to try this, (it takes bit of a time to prepare the TS stream) meanwhile could you check the code that i'll be using, below code works fine for me vlc -d udp://@:5008 --marq-marquee VAS TEST --sout '#transcode{vcodec=mp4v,width=320,he...

Hi,
Is there a way to demux a MPEG 2 TS containing many programs.
So that I can transcode each of the programs independently ?

does VLC supports this Please ?

Thanks!

to add something..

I tested above on Windows XP..

can I install multiple versions of VLC on Linux environment also? (as a workaround for the h264 transcoding issue)

Hi, I have tested Transcoding a MPEG2 TS to MPEG 4 (RTP) with VLC 0.8.6 and 0.9.9 Seems the older version 8.6 produces higher quality output than the newer one (for same transcoding parameters) :-o But I don't have the versatility to change the codec to a newer one in 8.6 (h 264) (it gives 'segmenta...

installed libgcrypt-1.4.4-5.el5.i386.rpm and now the problem is ok

i'm having the same problem.. ( on RHEL5- VLC 0.9.9)
any of you guys able to solve this.. other than using separate distribution ?

Hi, Reme, as you said there are some warning for rtp stream plugin.. [vlcuser@localhost root]$ vlc -vv udp://@:5009 --sout '#transcode{vcodec=h264,wi dth=320,height=240,vb=350,acodec=mp4a,ab=64,channels=2,samplerate=44100}:rtp{dst =10.48.233.38,port-video=7128,port-audio=7130,sdp=file:///home/vlcsdp...

below are the messages i'm getting.. please look into.. [vlcuser@localhost root]$ vlc -vv udp://@:5009 --sout '#transcode{vcodec=h264,wi dth=320,height=240,vb=350,acodec=mp4a,ab=64,channels=2,samplerate=44100}:rtp{dst =10.48.233.38,port-video=7128,port-audio=7130,sdp=file:///home/vlcsdp/max.sdp}' V...

I installed VLC with yum, so hopefully the rtp stream out didn't miss. also can see the installed plugin in /usr/lib/vlc/stream_out /usr/lib/vlc/stream_out/libstream_out_autodel_plugin.la /usr/lib/vlc/stream_out/libstream_out_autodel_plugin.so /usr/lib/vlc/stream_out/libstream_out_bridge_plugin.la /...

also can find the rtp output module installed !! need some advice on this guys.. rpm -ql vlc ....... /usr/lib/vlc/stream_out /usr/lib/vlc/stream_out/libstream_out_bridge_plugin.so /usr/lib/vlc/stream_out/libstream_out_description_plugin.so /usr/lib/vlc/stream_out/libstream_out_display_plugin.so /usr...

Hi, I'm having an issue streaming with VLC... Trying to encode an input stream but it says there is no RTP module I'm using VLC 0.9.9 on redhat 5 (EL) and installed using yum. and installation was successful but cannot stream a RTP output.. command : vlc -vvv udp://@5000 --sout '#transcode{vcodec=h2...