[CinCV TNG] [PATCH] Removed can_copy_from from file* sources
randrianasulu at gmail.com
Sat Jul 15 23:10:53 CEST 2017
В сообщении от Saturday 15 July 2017 22:40:26 Einar Rc3bcnkaru написал(а):
> On 07/15/2017 10:11 PM, igor_ubuntu wrote:
> > АFAIU
> > If a user want to get directly copied frames, he should set:
> > 1 video track, no effects, input and output have the same size, input
> > and output media is all I-frames.
> > Then he goes to File/Render and set the same parameters as in original.
> > If the parameters are not exactly the same (or (for example) if he had a
> > effect on track), the user will get reencoded result.
> > Right ?
> Yes. When cinelerra decides to copy frame, rendering parameters
> affecting the result are ignored. DV hasnt any.
It seems to work with DV (input: dv in avi, output - quicktime/dv)
and with mjpeg (mjpeg/quicktime -> photo jpeg/quicktime)
(I looked at how fast rendering happened on slowed-down CPU, for ~8 sec. long DV
cut down clip)
mjpeg file was encoded with ffmpeg 2.8.11:
ffmpeg -i /dev/shm/tmp/ud_04102010-small.mov -acodec copy -vcodec
I also tried DNxHD, but there seems to be no such codec at CinelerraCV's
encoding side. Test file was encoded with this ffmpeg command:
ffmpeg -i ~/New_hdd/new_my_videos_magic_eye_cam/20150811_180635.MOV -vcodec
dnxhd -b:v 90M -s 1920x1080 -pix_fmt yuv422p -acodec
parameters for ffmpeg converter were copied from this post to ffmpeg-users ML:
But I found it quite sad cinelerraCV (main branch) can't be compiled with
external ffmpeg 2.8.x (I saw few patches in
not dared to try and apply them to main branch ....)
This brings interesting question - when next version of Cinelerra will be
released? (from main branch). internal ffmpeg in main branch very old ....(like
pre-0.5, from changelog). Is Cinelerra-CV-E not quite ready for replacing main
version? Because I don't think moving forward TWO versions by basically 1 and
1/2 developer is good idea ... so, if new release from main branch will be done
soon -> CVE can become new main version, and old quicktime-based Cinelerra
moved to branch ....
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