[Cin] ffmpeg - cuda

Sun Apr 12 08:22:49 CEST 2020

Hi Sergio, excuse me for getting me into the conversation. When this
happens to you from the black bands you can solve it with the mask tool. I
made a tutorial about it, you can see it at:
https://multimediagnulinux.wordpress.com/2020/03/27/cinelerra-gg-5-mascaras-tapar-objetos-o-personas/
I do not exactly deal with the question you are raising, but I am taking
note to make a tutorial on the subject of inserting a video recorded
horizontally and removing these black bands with a mask. Regards.

El dom., 12 abr. 2020 a las 0:45, <sergiogomez at tostado.com.ar> escribió:

> It's not a problem to me. I just want to offer a true information,
> tested... Additionally, and another topic... I was trying a lot of
> possibiliies to get the best performance possible... One was transcode
> option to replace media in video. One of them, was a movil (cellphone)
> video ( 720x1440) , it was transcoded  adding black bands to complete
> 16:9 aspect, 1920x1080.
>
> El 2020-04-11 19:29, Phyllis Smith escribió:
>
> Great, I am in no hurry and also would like to include your statistics in
> the manual if possible.
>
> On Sat, Apr 11, 2020 at 3:30 PM Sergio Daniel Gomez <
> sergiogomez at tostado.com.ar> wrote:
>
>> Phyllis, Yes! just this parameter, but if you want, give me a few day to
>> more test. At this moment.. rendering 4minutes x 30 fps, full-hd, with
>> masks, 11.685fps, rendering same time with constant zoom and chromakey,
>> 9.04 fps. The detail is,before was rendering a 6 fps.
>>
>> I want to test little more to confirm stability, HW rendering I can
>> confirm now.
>>
>> Sergio
>> El 11/04/2020 a las 13:38, Phyllis Smith escribió:
>>
>> Sergio,
>> Thank you so much for sharing your results which are quite impressive.
>> Am I understanding correctly that the only change you ended up making was
>> the"*hwaccel_flags to (0x00000002) ?? *allow_high_depth" to the
>> h264-nvenc.mp4 ffmpeg option file?  I want to add that as a choice for
>> others to see.  Probably your newer/higher end graphics board was very
>> beneficial -- a good way to justify upgrading if using h264/h265.
>>
>> GG/Phyllis
>>
>>
>>
>> On Sat, Apr 11, 2020 at 7:07 AM <sergiogomez at tostado.com.ar> wrote:
>>
>>> Thanks a lot! Well...
>>>
>>> pipe option isn't better in this case (I did some test). Changing  parameters
>>> to pass in  the "view" button, ffmpeg option, not codec, is better.
>>> Attached images show some information to think it's using HW
>>> Acceleration. It's using 2 of 6 cores when before used all cores to
>>> reender. And use dedicate memory of graphic card and more GPU  and video
>>> engine. Render time reduce about 25% and that's excelent
>>>
>>> Oh! The more important topic ! Manual is amazing. I'm trying to
>>> translate to spanish (slowly) to read the whole book and colaborate with
>>> CinGG
>>>
>>>
>>> Sergio
>>>
>>> El 2020-04-10 15:13, Phyllis Smith escribió:
>>>
>>>
>>>
>>> Sorry, I (Phyllis) did not quite understand the question and it was late
>>> at night so my brain was tired.
>>>>
>>>> My original question was: Can I pass some imput parameters to ffmpeg in
>>>> render process? And I ask this again. Why? Becase ffmpeg -hwaccel
>>>> cuvid can enconder x264 at 13,7x and without this parameter, just 2.5x. And
>>>> at the moment, x264 is sufficient for me.
>>>>
>>> One way to get parameters passed to ffmpeg while rendering is using the
>>> "Piping Video to a Command Line" (this was adapted from CV) and is
>>> documented in Rendering chapter 6 of the manual (6.5.6 section).  I have
>>> not re-tested that in awhile but there is no reason that it should not be
>>> working.
>>>
>>> The second way which might only work for certain parameters, is to click
>>> on the Video wrench in the Render Menu and try to see if the parameter you
>>> want to pass is available in either the "view" button which brings up
>>> another menu and on the top right hand side is the button "Kind" which
>>> defaults to "codec" but can be set to "ffmpeg".   And/Or click on the
>>> "format" button which provides additional parameters -- these only sort of
>>> work and probably not what you want.
>>>
>>> A third way is just to write a Shell Command and use that via the "shell
>>> cmds" button in the upper right hand corner of the timeline by the "Ffmpeg
>>> use first/last button".
>>>
>>> None of these are easy and you are a brave man to attempt them !!
>>> Phyllis
>>>
>>>
>>>
>>>
>>> --
>>> Cin mailing list
>>> Cin at lists.cinelerra-gg.org
>>> https://lists.cinelerra-gg.org/mailman/listinfo/cin
>>
>>
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>
>
>
>
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