Den 05.06.2023 20:51, skrev Andrew Randrianasulu:
пн, 5 июн. 2023 г., 20:23 Andrew Randrianasulu <randrianas...@gmail.com>:
пн, 5 июн. 2023 г., 20:18 Terje J. Hanssen <terjejhans...@gmail.com>:
Den 05.06.2023 16:14, skrev Andrew Randrianasulu:
пн, 5 июн. 2023 г., 15:34 Andrew Randrianasulu
<randrianas...@gmail.com>:
пн, 5 июн. 2023 г., 15:31 Terje J. Hanssen
<terjejhans...@gmail.com>:
Den 04.06.2023 21:58, skrev Andrew Randrianasulu:
вс, 4 июн. 2023 г., 15:07 Terje J. Hanssen
<terjejhans...@gmail.com>:
Den 31.05.2023 07:24, skrev Andrew Randrianasulu
via Cin:
> I ......
>
> ===
>
> and mpeg2enc line looked like this
>
> FileMPEG::open_file: Running
> /dev/shm/cinelerra/cinelerra-5.1/bin//mpeg2enc
-v 0 -b 8000 -q 1 -a 2
> -F 3 -H -c -I 1 -M 4 -z b -f 8 -g 15 -G 15 -R 0 -o
> '/dev/shm/tmp/dvd_20230531-081921/dvd.m2v'
>
>
Is it possible to get the mpeg2enc command line
to test it with a dv
input file directly outside Cinelerra?
try line like this?
ffmpeg -i input.dv -f yuv4mpegpipe - \
|mpeg2enc {flags and output file as shown }
Yes, this fixed the BFF issue, but still Interlaced
and 4:3 format.
Stream #0:0: Video: mpeg2video (Main), yuv420p(tv,
bt470bg, bottom first), 720x576 [SAR 16:15 DAR 4:3],
25 fps, 25 tbr, 1200k tbn
What I want is to get and try Progressive and 16:9
wide format. By cropping 720x576 to 720x405, bottom
65 and top 106 (top) preserves the displayed timestam
at bottom.
Then you should try ffmpeg's deinterlacing and cropping
before passing it to mpeg2enc.
I tried
ffmpeg -i dv01.dv -aspect 16:9 -vf crop=iw-0-0:ih-106-65:0:106
-f yuv4mpegpipe -
that resulted in interlaced bff:
Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, bt470bg,
bottom first), 720x404 [SAR 101:135 DAR 4:3], 25 fps, 25 tbr,
1200k tbn
I think mpeg2enc part of full cmd line need their own tweaks
relative to one you get from cingg, for progressive and aspect
ratio corrected output .....
Here were a lot to sort out:
The dvd-wide-ffmpeg+mpeg2enc.m2v from here is also scaled or streched
too high in vertical direction.
VLC deinterlaced on playback (keyboard D) on interlaced m2v gives
better quality.
In comparision the ffmpeg command line I have used is:
ffmpeg -i dv01.dv -f dvd -target pal-dvd -aspect 16:9 -vb
8000k -mbd rd -trellis 1 -cmp 0 -subcmp 2 -vf
crop=iw-0-0:ih-106-65:0:
which results in progressive and DAR 16:9, but still not so
good edge quality
May be "progressive" here is error, and ffmpeg still encodes
interlaced-as-progressive, so VLC for example does not enable
deinterlacer at playback automatically?
VLC Deinterlaced ON playback of Progressive dvd-wide-dv01.mpg results
in more coarced jagged or saw-toothed round edges
Have you tried to add interlaced flags manually to ffmpeg's command line?
-flags +ilme+ildct gives interlaced bff
Did you also tried to force deinterlacer in VLC? (or may be xine).
I hope my next mail contain enough of filtering lines for you to try
after interlaced crop.
Stream #0:0[0x1bf]: Data: dvd_nav_packet
Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv,
progressive), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr,
90k tbn
Side data:
cpb: bitrate max/min/avg: 9000000/0/0 buffer size:
1835008 vbv_delay: N/A
Stream #0:2[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 448 kb/s
Unsupported codec with id 98312 for input stream 0
http://macilatthefront.blogspot.com/2021/05/which-deinterlacing-algorithm-is-best.html?m=1
talks about some algos on ffmpeg I never considered:
Estdif / Bwdif
TS. bwdif V->V Deinterlace the input image.
TSC estdif V->V Apply Edge Slope Tracing deinterlace.
Yes, of interest if I knew how to put this into the ffmpeg
command line above, with reference to the blog:
/*Bwdif (FFMPEG): *//Good at reconstructing smooth lines and
retaining overall image detail with SD content, faster than
QTGMC but not as good.
//*QTGMC
<https://macilatthefront.blogspot.com/2021/01/deinterlacing-with-avisynth-and-qtgmc.html>:*
Best retention of original image detail and handling of edge
case artifacts,
/
Can you clarify even with my patches AND deinterlacing
checkbox set in dvd creation window and "use ffmpeg"
unchecked you still get interlaced?
I can do it, when it is included with the next Cin apps.
quite amazing ffmpeg in this most basic case still
works after nearly 20 years, line stolen (and
modified) from
https://avva.livejournal.com/1188593.html
Creating DVD with typical ffmpeg decoding to raw
video piped to mpeg2enc for encoding has been the
usual way as described in the Cin-CV manual
http://cinelerra-cv.wikidot.com/cincv-manual-en:rendering-files#11
and is also included in Ruh's dvd guid sec. 3.4
https://www.qsl.net/n1gg/linux/video/linuxdvdguide.html#3
mpeg2enc is said to give some higher quality at high
bitrate that ffmpeg.
The drawback is it is slow and audio and to be added
and multiplexed
For ffmpeg as I said cingg does NOT use command
line ffmpeg, so you need to modify profile
parameters in dvd.dvd file.
And preferably also a corresponding ffmpeg
command line.
I had already created a .mpg video file,
interlaced and bff, and it was
no better, so I think deinterlaced (progressive)
will be best.
your call!
Happy coding!
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