Request Amazon/Primevideo CBR video quality? [Is Essential]

Discussion in 'AnyStream' started by bartinoUHD, Sep 21, 2020.

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  1. bartinoUHD

    bartinoUHD Active Member

    Can you add option to select video quality in Amazon/Prime betwen CBR and CVBR?

    Changing this variable "deviceBitrateAdaptationsOverride" to "CVBR,CBR" or "CBR"?
     
  2. Ch3vr0n

    Ch3vr0n Translator NL & Mod

    My instinct says that's not going to be possible. AnyStream is merely a downloader that grabs the stream as if it's served fun the provider and puts it in an mp4 file. Changing the bitrate from vbr to cq might require processing the video in a way AnyStream isn't designed for.

    So before I add this to the feature request sticky, I'll await feedback from @Pete and/or @Prospere

    Sent from my Pixel 3 XL using Tapatalk
     
  3. bartinoUHD

    bartinoUHD Active Member

    I'm not talking about processing the video, I'm talking about changing a variable in the Amazon manifest request that already has those 2 quality options on its servers, and in the new series the CBR is much better video than the CVBR.

    Thanks
     
  4. Ch3vr0n

    Ch3vr0n Translator NL & Mod

    I know what you meant, which is why I said I don't know if it's possible and I'd wait on feedback. Then it'll get added on the request list with the proper status.

    Sent from my Pixel 3 XL using Tapatalk
     
  5. teege

    teege Member

    I wouldn't say "essential" but I do always use that argument with other... things.
     
  6. Prospere

    Prospere RedFox Development Team

    @bartinoUHD Technically this is not a problem at all. Although, there may be other things to take into consideration.
    @Ch3vr0n Could you please add this to the feature request list? Don't mark it yet, just add.
     
    Aeneas72 likes this.
  7. Ch3vr0n

    Ch3vr0n Translator NL & Mod

    @Prospere Done, marked as "under consideration"
     
    bartinoUHD likes this.
  8. bartinoUHD

    bartinoUHD Active Member

    Thanks
     
  9. albino

    albino Active Member

    I would like to +1 this. I just bought the lifetime version of AnyStream because I knew immediately that it was a great app that I would use all the time, but the one thing I wish it had was the option to pick the CBR stream.

    The Amazon VBR stream is often as good or slightly better than the CBR stream, but many times sometimes it's much worse. Sometimes the VBR is less than half the bitrate with a lot of detail lost in darker scenes, compression artifacts during fast action scenes, or worse in movies with a lot of film grain.

    I will probably primarily use this to download 1080p, but it's probably worth noting that if you download 720p or SD that the Amazon VBR version can be awful compared to the CBR version at those lower resolutions. I suppose most people downloading SD are probably more concerned about filesize, but the CBR versions of those streams are still relatively small by comparison, with much higher quality.

    Just my two cents. Thanks for making such a great product!
     
  10. Prospere

    Prospere RedFox Development Team

    albino likes this.
  11. Prospere

    Prospere RedFox Development Team

    Not quite true. Devices receive device specific playlists, while we are removing device/user specific information from the request. Even if there are two AAC streams of the similar rated frequency, they are still different. One may be AAC-LC, the other AAC-SBR or AAC-PS with different channel arrangements too. Besides, I do not see how it is all related to the topic.
     
  12. LUT-FC

    LUT-FC Member

    Not sure how goapy's comments are related either but am definitely in favour of being able to choose CBR as it's usually superior to the VBR stream so would be great to be able to choose the best quality available!
     
  13. Prospere

    Prospere RedFox Development Team

    That's been placed on the list.
     
  14. goapy

    goapy Member

    That was my point, that they are different. And that the wrong pair was being put together. Anyway, I've deleted my post since it was deemed unrelated to this topic.
     
  15. Pete

    Pete Forum Admin Staff Member

    Are you really certain? Because technically the opposite would make sense.
    CBR - a lot of the time - needs to insert useless filler-data, just to keep up the bit rate. While VBR's whole purpose is to distribute the bitrate more evenly over the stream to peak at high detailed scenes (which CBR cannot)
     
  16. Chaewon

    Chaewon Member

    @Pete CBR is better than VBR when it comes to live action/non animated content. This has been heavily tested by multiple groups in the 'race' world.
     
  17. LUT-FC

    LUT-FC Member

    @Pete yes, 9 times out of 10 the CBR will be better than VBR.

    Would be great to be able to choose either CBR or VBR so that the 1 time out of 10, it's down to the user to run comparisons to decide which they would like to keep. So fingers crossed it can be added (I know it's on the list already).
     
  18. WiseMan

    WiseMan Active Member

    +1 for CBR support.
    Maybe HEVC too? Personally I don't find it useful, but it offers quite good quality with smaller sizes.
     
  19. libris

    libris Member

  20. testiles

    testiles Well-Known Member

    When recording a live video feed to hi-rez .ts files, I've found that the CBR setting (rather than VBR) provides much smoother motion, especially in fast-action sequences, as others have said above.

    So, regardless of the space "wasted" I always record with CBR.

    I don't know though if it would provide an advantage if used for AnyStream downloads, which already look pretty smooth to me...



    T
     
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