smart encoding

[alcinos]

Hi,

So in theory that should indeed be possible but this is quite tricky to do
it properly IMHO. Firstly, the method depends on the codec of the stream.
As Evert mentionned, for a h264 stream we have to re-encode up to the next
i-frame, that could be far away. For Codec where frames all depend on the
previous one, we have to basically reencode everything. Anyways, dealing
with all the codec is a lot of work.
Besides, it requires a very low level access to the stream that we don't
have easily from kdenlive, since we rely on several layers of abstraction.

Finally, I'd be curious to know if this is actually a common usecase. It
seems a bit unlikely that someone don't want to apply any
transition/effects/reencoding at all.


2017-09-28 13:38 GMT+02:00 Evert Vorster <evorster at gmail.com>:

> Hi there...
>
> Hmm, only re-encoding the frames that change?
> So, re-encode only up to the next I-frame on a transition, and then just
> copy the stream until the next change....
> sounds awesome, especially if you are not adding overlays and messing with
> the colors of the footage.
> This could really speed up some workflows.
>
> -Evert-
>
>
>
> On 28 September 2017 at 12:57, alberto fuentes <pajaro at gmail.com> wrote:
>
>> I know, I know
>>
>> Double the features and half the crashes! Im not even opening a
>> wishlist bug for this one, just a random idea!
>>
>> Heres a guy asking for smart encoding. It could be one of those
>> features for amateur users that sets you apart ;)
>>
>> https://www.reddit.com/r/linux4noobs/comments/72xrw4/trimjoi
>> n_videos_while_preserving_full_quality/
>>
>> My first reaction was that you always have to reencode always
>>
>> But they claim in their web that they can do it
>>
>> http://www.solveigmm.com/en/products/video-splitter/
>> "For all media files smart editing, frame-accurate appoach is used.
>> SolveigMM advanced know-how technology keeps 99% of data and only
>> transcodes a few frames at the beginning and end of the video
>> segments, so files are processed fast and lossless"
>>
>> Cheers!
>>
>
>
>
> --
> Evert Vorster
> Isometrix Acquistion Superchief
>
>
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