I was finding the way to strip file as much as possible since disabling
mapping metadata in ffmpeg stopped working in the past and this was the
only way worked, but still not optimally - some metas remains ;-)
--deim
Dne 25. 11. 22 v 1:57 Andrew Randrianasulu via Cin napsal(a):
пт, 25 нояб. 2022 г., 03:22 Phyllis Smith via Cin
<cin@lists.cinelerra-gg.org>:
Interesting results from tests using "flags" on a small 4K webm
video only. You can see "bitexact" is the same as flags set to
unaligned, mv4, qpel, and gray. Cgop and Global Header do differ
so it appears that "flags" is working.
SAME 69705241 Nov 24 15:29 unaligned.mp4
SAME 69705241 Nov 24 15:30 mv4.mp4
SAME 69705241 Nov 24 16:51 qpel.mp4
Different 69808336 Nov 24 15:23 *cgop*.mp4
SAME 69705241 Nov 24 16:57 gray.mp4
SAME 69705241 Nov 24 17:00 *bitexact.*mp4
Different 69704581 Nov 24 17:02 *global_header*.mp4
in theory bitexact should product exactly same file on different runs
- no time/date metadata embedded for example ....
On Thu, Nov 24, 2022 at 12:11 PM Phyllis Smith
<phylsmith2...@gmail.com> wrote:
deim31:
As Andrew said, it is there in "flags" (at least for mp4 and
mov) but with the video I tried, *I saw no difference*. Steps
to get flag "bitexact":
1) bring up render menu and set your File Format as usual to
FFMPEG/mp4 or mov (have not tried others)
2) click on the Video wrench, then click on box in Video
Options "view" which brings up a menu
3) in the 2nd line on the top right is the box Kind which is
set to codec; use the arrow to set to "ffmpeg"
4) on the left side scroll down in the option area and look
for "flags" and highlight that
5) above the option header is now the word "flags" with a down
arrow; click on arrow and you see "bitexact" which you should
click on and you will see the value switch from 0x0 to
0x00800000 (I lost count of zeros but you get it)
6 ) click on Apply box below the Kind box and click OK button
in menu
Please let us know if this actually works.
On Thu, Nov 24, 2022 at 9:39 AM deim31 via Cin
<cin@lists.cinelerra-gg.org> wrote:
Hi,
I'm looking for way to add to Cin's ffmpeg encoder
-bitexact flag.
I've tried to add similar way as
movflags=+faststart
but didn't succeed with any of:
-bitexact
bitexact
bitexact=
Thanks :-)
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