is it correct that using voukoder in DVR 17 would double the exporting time--- under proress codec

  • hello,


    i'm a green hand to voukoder and just started to test it with my DVR 17 recently. it's great that i could export my files in proress, but it seems that the exporting time was doubled, as well as the file size, which turned out to be twice, comparing with the original file.

    i'm just wondering whether this correct or not, as i've read the knowledge thread, voukoder does won't hasten the exporting time, but it's so wierd that the time was doubled. and it's also wierd that the file size would be doubled under proress.


    my cpu: Intel(R) Core(TM) i7-4720HQ CPU @ 2.60GHz 2.60 GHz, is it because my budy is too old fashioned?


    https://www.imagebam.com/view/ME3MHUR


    above is the codec i've chosen



    besides, i've also tested it with h.264


    https://www.imagebam.com/view/ME3MHUS


    in this situation, file sizes are small, but exporting time were still doubled


    then i selected h.264(nvenc), since my graphic card is gtx960m


    https://www.imagebam.com/view/ME3MHUT


    i first chose yuv4448bit, in this situation, not only exporting time was halvend, but also the file size were pretty small

    then i selected 10bit, unluckily, the exporting failed and DVR automatically closed. i think may be this is because gtx960m can't encode 10bit files.



    so maybe i should be more patient with file size and exporting time since i want to use proress.


    Or, will it be improved in the future?


    Best regards,


    Sam

  • Vouk

    Approved the thread.
  • Elheat First, yes, your CPU is a bit slow (Passmark score of only 5734). Second, Prores is an intermediate codec used for exchange a video within the editing workflow. Thus it is less compressed than i.e. h264 files. You will notice scrubbing in ProRes files is faster than in h264 files. This results in a larger file size. Also ProRes encoding can't be GPU accelerated (with the current GPUs). So I think it is pretty normal.

  • Elheat First, yes, your CPU is a bit slow (Passmark score of only 5734). Second, Prores is an intermediate codec used for exchange a video within the editing workflow. Thus it is less compressed than i.e. h264 files. You will notice scrubbing in ProRes files is faster than in h264 files. This results in a larger file size. Also ProRes encoding can't be GPU accelerated (with the current GPUs). So I think it is pretty normal.


    Thank you Vouk for your explanation. but what i'm now coming across is a double-sized file. I.e, my original file from my camera is a 30MB MKV file, after exporting from DVR 17 using the proress codec, it turns out to be nearly 60MB. but if I use h.264, it could be 2 MB under 422, and 6 MB under 444. i understand that proress would be much larger than h.264 files, but i just can't understand why it could even be much larger than my original XAVC-I file. i've never used MAC and i've got little experience working with proress code(but i was always told it was good, so i wanted to try it). as a result, i'm not sure if this is a common result that you would get, of whcih i mean that whatever original file is, if you use proress, the exported file would always be larger than the original file.