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Thread: VU+duo2 transcoding capabilities

  1. #1

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    VU+duo2 transcoding capabilities

    Hi,
    I am interested in purchasing VU+DUO2 mainly because of its transcoding capabilities. Can someone that have it to confirm the follwing:
    1. Is the transcoding absolutly stable?
    2. IF my upload speed drop below 5 mbit/s what hapenes? Should i lunch the program again or it restores automatically after the speed is above 5 mbit?
    3. If i have a 4g mobile phone and if the download speed varies (above and below 5 mbit), what is hapening? Do i have to relunch or just i am loosing some frame rates?
    4. Generraly, what hapenes if i am in a car and i want to watch stream and watch with 5mbit with a 4g mobile phone? Is it stable? If the car is on a go and if i lost the connection is it reconnected automatically by itself?
    5. What is the quality of transcoding with 5mbit/s? As i understood it is full hd, but how does it look compared to the original chanell on your tv?
    6. Which image is prefferable to have the best transcoding and streaming

    Thanks in advance for your time and your answers!
    BR,
    Ico

  2. #2

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    I can't answer all of your questions, especially because I only have experience with Solo2. However, I can answer no.5, at least partly.
    Your understanding is wrong. It is not HD, it's not even SD! I don't remember the exact picture size but it is something like 240x400. Also, I'm not sure if 5 mbit/s is available for Duo2. In the case of Solo2, it is up to something like 1 mbit/s. There is certainly more in Duo2 but I'm not sure how much more.

  3. #3

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    Hi,
    1. its stable if the connection is stable
    5. it is not full HD it is 640x480 and quality at 5MBit is quite good. It is not so bad starting at 1MBit.

    ciao
    ---
    Sat:VU+ Ultimo4K/Solo4K/Duo2/2*Solo2/Ultimo
    Remote: Harmony 200, 700, Link, Smart Control, Smart Companion, Elite, 2*Ultimate, Keyboard

  4. #4

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    Quote Originally Posted by Trial View Post
    Hi,
    1. its stable if the connection is stable
    5. it is not full HD it is 640x480 and quality at 5MBit is quite good. It is not so bad starting at 1MBit.

    ciao
    Hi,
    Really.....5mbit/s and only 640*480 ????....
    What do you mean with ".....and quality at 5MBit is quite good." ? - how does it look on 50" full hd tv? Is it watchable at all?

  5. #5

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    Hi,
    with 1MBit it is really good watchable in a window at my PC. I did not try 5MBit.

    ciao
    ---
    Sat:VU+ Ultimo4K/Solo4K/Duo2/2*Solo2/Ultimo
    Remote: Harmony 200, 700, Link, Smart Control, Smart Companion, Elite, 2*Ultimate, Keyboard

  6. #6

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    I don't think it will be any good on a 50" TV.
    1 Mbit/s quality is acceptable but in a small to medium-sized window on a computer screen.

  7. #7

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    Ok...i got confused.....what is the resolution of 5mbit/s stream?
    ...and what is the differance between 1mbit/s and 5mbit/s ?

  8. #8

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    Hi,
    5MBit also 640x480 but very good quality.

    ciao
    ---
    Sat:VU+ Ultimo4K/Solo4K/Duo2/2*Solo2/Ultimo
    Remote: Harmony 200, 700, Link, Smart Control, Smart Companion, Elite, 2*Ultimate, Keyboard

  9. #9

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    Let me try and answer some of your questions regarding transcoding on the VU+ DUO2. I have one now for almost 2 months and am very pleased with it. I got the 4 DVB-S2 tuner option (or to be more precise the double twin DVB-S2), mainly for the transcoding capabilities. This way my son can watch his baby TV, I can watch the news and my wife can watch whatever she wants while recording something else (even if all the channels are on different transponders).

    Now lets stop barging and start answering some of your questions.

    If you watch SD channels, than you don't even need the transcoding capability to watch them remotely. A normal SD channels is between 2Mbts and 4Mbts. I have so far not come across any SD channel which would even come close to 4.5Mbts not to mention 5 Mbts. This means that if you choose to watch the SD version of a channel, you don't need to use the 8002 port and ask your device to transcode it on the fly, you can just freely stream it to your device through the 8001 port and the quality is the same as if you were watching it on your TV (the device where you stream it needs to have at least the same resolution as the stream, which almost every newer device has).

    Now the stream will be as stable as your internet connection, both you upload at home and your mobile download and latency. This means that if something drops below the bandwidth of the stream, lets say your download speed on your device goes to 2Mbts while the stream is going at about 3.5Mbts (that is the normal average for my SD streams), than you would see some buffering, than lots of pixels and finally when your download speed would improve it would probably just skip the part where you were having some connections problems and the stream would resume with the full quality.

    Now if you are watching HD channels, which tend to go from 8-12Mbts (I usually see them at around 10Mbts), than you would need to use the transcode feature of your device. If you set it at 5Mbts, the box will usually output a little more than 5Mbts (not sure why, but I normally get about 5.1 or 5.2), maybe the sound is not counted or something like that. This will mean that your 10Mbt HD stream will be compressed to 5Mbts on the fly, and streamed to you wherever you are. I think the resolution will be the same as the original one, however I need to check that as I have not paid close attention to that detail.

    At 5Mbts the quality will be way above the SD quality, thus you should be very pleased with it. The reason I don't use such a high quality streaming is that which mobile data (not sure about your 4G) but in my case, I usually get between 2Mbts and 8Mbts. Thus I prefer to lower the stream to 2Mbts and minimise the buffering to the maximum, and the quality is already very good.

    The rest of your questions depend more on the stability of your internet connections (both upload at home and download everywhere), than the capabilities of the box.

    I hope I have answered your questions, if yes feel free to press the Thanks button below
    Last edited by Johev; 07-11-13 at 16:05.

  10. The Following 6 Users Say Thank You to Johev For This Useful Post:

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  11. #10

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    Hi,
    Thanks a lot for your detailed answer. I have the follwing coments marked below in red colour.


    Quote Originally Posted by Johev View Post
    Let me try and answer some of your questions regarding transcoding on the VU+ DUO2. I have one now for almost 2 months and am very pleased with it. I got the 4 DVB-S2 tuner option (or to be more precise the double twin DVB-S2), mainly for the transcoding capabilities. This way my son can watch his baby TV, I can watch the news and my wife can watch whatever she wants while recording something else (even if all the channels are on different transponders).

    Now lets stop barging and start answering some of your questions.

    If you watch SD channels, than you don't even need the transcoding capability to watch them remotely. A normal SD channels is between 2Mbts and 4Mbts. I have so far not come across any SD channel which would even come close to 4.5Mbts not to mention 5 Mbts. This means that if you choose to watch the SD version of a channel, you don't need to use the 8002 port and ask your device to transcode it on the fly, you can just freely stream it to your device through the 8001 port and the quality is the same as if you were watching it on your TV (the device where you stream it needs to have at least the same resolution as the stream, which almost every newer device has).

    Now the stream will be as stable as your internet connection, both you upload at home and your mobile download and latency. This means that if something drops below the bandwidth of the stream, lets say your download speed on your device goes to 2Mbts while the stream is going at about 3.5Mbts (that is the normal average for my SD streams), than you would see some buffering, than lots of pixels and finally when your download speed would improve it would probably just skip the part where you were having some connections problems and the stream would resume with the full quality. OK, but i suppose you can stil transcode them to say to 1mbit/s and to keep the SD quality? What is the format of direct streaming (whitout transcoding) ? Because on my dreambox800HD i have a pure ts stream of approx. 8-10 mbit/s.

    Now if you are watching HD channels, which tend to go from 8-12Mbts (I usually see them at around 10Mbts), than you would need to use the transcode feature of your device. If you set it at 5Mbts, the box will usually output a little more than 5Mbts (not sure why, but I normally get about 5.1 or 5.2), maybe the sound is not counted or something like that. This will mean that your 10Mbt HD stream will be compressed to 5Mbts on the fly, and streamed to you wherever you are. I think the resolution will be the same as the original one, however I need to check that as I have not paid close attention to that detail. On my Dreambox800hd i have a pure ts stream of approx. 40mbit/s. I will really appreciate information for the resolution after transcoding and streaming of FULLHD program at 5mbit/s ?

    At 5Mbts the quality will be way above the SD quality, thus you should be very pleased with it. The reason I don't use such a high quality streaming is that which mobile data (not sure about your 4G) but in my case, I usually get between 2Mbts and 8Mbts. Thus I prefer to lower the stream to 2Mbts and minimise the buffering to the maximum, and the quality is already very good.

    The rest of your questions depend more on the stability of your internet connections (both upload at home and download everywhere), than the capabilities of the box. So, if you have stable upload and good download, you can watch with no problem for 5 hours for example?

    I hope I have answered your questions, if yes feel free to press the Thanks button below

  12. #11

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    Hi,
    what is so hard to understand when I say 640x480? I checked it. My max on a HD channel was around 20MBit. SD channel are normally, which a few exceptions, MPEG2.

    ciao
    ---
    Sat:VU+ Ultimo4K/Solo4K/Duo2/2*Solo2/Ultimo
    Remote: Harmony 200, 700, Link, Smart Control, Smart Companion, Elite, 2*Ultimate, Keyboard

  13. #12

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    I was testing it right now and I have to take back my initial thought about the transcoded resolution as @Trial is 100% correct. Every transcoding HD or SD channel just ends up with the same standard 640*480 resolution. My SD channels are usually 720*576 resolution (not transcoded) and HD's are between 1920*1080 and 1440*1080.

    So far I have not had an HD channel of 20mbts or above, however I trust you know your data and probably it's just my paid TV. I am Portuguese and subscribe to a Portuguese TV provider MEO, thus maybe they only have lower bandwidth HD channels.

    As for the uninterrupted stream I'm not sure about 5h, but I have had 1h streams working just fine. However sometimes it does stop and I need to restart the stream, be it on my Galaxy Note (android phone) with the Vu+ player installed or on my laptop using VLC. Sometimes I just need to press play again as for no apparent reason it stops. No clue why, but not very common.

    Good luck with the rest
    Last edited by Johev; 08-11-13 at 02:57.

  14. #13

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    Quote Originally Posted by Johev View Post
    I was testing it right now and I have to take back my initial thought about the transcoded resolution as @Trial is 100% correct. Every transcoding HD or SD channel just ends up with the same standard 640*480 resolution. My SD channels are usually 720*576 resolution (not transcoded) and HD's are between 1920*1080 and 1440*1080.

    So far I have not had an HD channel of 20mbts or above, however I trust you know your data and probably it's just my paid TV. I am Portuguese and subscribe to a Portuguese TV provider MEO, thus maybe they only have lower bandwidth HD channels.

    As for the uninterrupted stream I'm not sure about 5h, but I have had 1h streams working just fine. However sometimes it does stop and I need to restart the stream, be it on my Galaxy Note (android phone) with the Vu+ player installed or on my laptop using VLC. Sometimes I just need to press play again as for no apparent reason it stops. No clue why, but not very common.

    Good luck with the rest
    I seem to be having issue with my Vu+ Player installed on my SG4. I can stream a SD channels but I get error each time I tried to stream HD channels via the S4, it just says the video cannot be played irrespective of the player (MX Player Pro, Samsung Video Player, etc) I am using for streaming....

    I have also tried dreamdroid but still no joy.

    Were you able to stream HD channels via android devices? If so, what app are using?

    Cheers

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    hi all
    i have also problems watching my duo2 when i'm away
    when i try to connect with my note 10.1 tablet via vu+ player it says that he can't connect
    i think that the problem is related to the settings ( but i don't know how to do it )
    i stream when i'm in the same network without any problem ( i have 40 mb connection )
    but outside
    can anyone help me ???

  16. #15

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    Hi,
    I have blackhole 2.0.7.3. installed on my new VU+DUO2. and i have the follwing problem with transcoding:
    -I have opened both ports (8001 and 8002transcoding) and i have the streams working on both ports. I am trying to stream and transcode an FullHD chanell. I left the reciever working and from external location i managed to open both of the streams whitout problems with VLC and with WMP. Unfortunatelly i see no transcoding working. Both streams are with parameters: h.264, 1920x1080, 25 fps, Bitrate 4000-15000 kbit/s. I have tried to change the parameters on the reciever (bitrate, fps) but without sucess. It looks like both streams are absolutelly indentical.
    Why transcoding feature is not working? Do i need to install some plugin? Is it possible the reciever to have a defect and can not make transcoding? Why the natural stream is in h.264 format? I though all natural sterams in general from any linux sat. reciever is in ts format?

    Please help, as i start to think, that i have to replace the reciever!
    Thank You!

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