Re: [CinCV] Creating Proxies with a Vixia

2012-02-21 Thread julien . cynober
You're not deinterlacing since you're not using any deinterlacing filter (after 
'-vf'). But the resizing method you're using is treating frames as progressive, 
even if they're interlaced. IMHO it doesn't matter since you're creating only a 
proxy. Don't forget to set the correct properties for your clips in cinelerra 
before rendering (eg. Top Field First, etc.).
BTW 60i is not 30p. 60i is actually 30 frames per second... but those frames 
are interlaced, not progressive. Each frame is made of two fields shot at 
1/60s, not one single image.
Julien

- Mail original -
De: Michael Wisniewski wiz...@gmail.com
À: cinelerra@skolelinux.no
Envoyé: Mardi 21 Février 2012 15:09:42
Objet: [CinCV] Creating Proxies with a Vixia

Hi!

I have a Canon Vixia HFS100 camera that I'm using with Cinelerra.  I'm
using mencoder and creating proxy files with it.  According to the
manual, I'm recording at the standard (default) option of 60i, *not*
PF30 or PF24.  According to the manual, recordings made with pf24 or
pf30 frame rates are converted and recorded to the memory at 60i.

When using mencoder, if I don't specify a frame rate (leave the -ofps
out), it converts the files, but the output file is in fast motion.
If I choose -ofps 30, it writes the file at the correct speed.  Here
is the command I'm using (from Grandma)

/usr/bin/mencoder -vf harddup -demuxer lavf -oac pcm -ovc lavc
-lavcopts vcodec=mjpeg -vf scale=640:360 -noskip -mc 0 -ofps 30 -o
PROXIES/$NEWNAME $i

I just wanted to verify that specifying the frame rate of 30 is
correct, even though I am recording at 60i.  I think it is because
from what I read, 60i is 30p, and mencoder might be deinterlacing
itI don't know about that last statement; it's the only thing that
makes sense.


Thanks!

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Re: [CinCV] Creating Proxies with a Vixia

2012-02-21 Thread Michael Wisniewski
Ah, OK.  Thanks for the response.  So, I can either not deinterlace
the file and set Cinelerra to use 'top field first', OR deinterlace
the file and not have cinelerra do anything?

This is really my first Cinelerra project.  When I go to render it, I
just open the XML and make sure it points to the MTS files, resize the
resolution, and start the render?  I posted before about piping the
rendering, but to verify, I would then use this?

ffmpeg -f yuv4mpegpipe -i - -y -an -vcodec libx264 -vpre medium -b:v
1k -bt 1k -r 30 -f mov %

Should I also add the -filter:v yadif to deinterlace the render?

Thanks!
mike


On Tue, Feb 21, 2012 at 8:23 AM,  julien.cyno...@free.fr wrote:
 You're not deinterlacing since you're not using any deinterlacing filter 
 (after '-vf'). But the resizing method you're using is treating frames as 
 progressive, even if they're interlaced. IMHO it doesn't matter since you're 
 creating only a proxy. Don't forget to set the correct properties for your 
 clips in cinelerra before rendering (eg. Top Field First, etc.).
 BTW 60i is not 30p. 60i is actually 30 frames per second... but those frames 
 are interlaced, not progressive. Each frame is made of two fields shot at 
 1/60s, not one single image.
 Julien

 - Mail original -
 De: Michael Wisniewski wiz...@gmail.com
 À: cinelerra@skolelinux.no
 Envoyé: Mardi 21 Février 2012 15:09:42
 Objet: [CinCV] Creating Proxies with a Vixia

 Hi!

 I have a Canon Vixia HFS100 camera that I'm using with Cinelerra.  I'm
 using mencoder and creating proxy files with it.  According to the
 manual, I'm recording at the standard (default) option of 60i, *not*
 PF30 or PF24.  According to the manual, recordings made with pf24 or
 pf30 frame rates are converted and recorded to the memory at 60i.

 When using mencoder, if I don't specify a frame rate (leave the -ofps
 out), it converts the files, but the output file is in fast motion.
 If I choose -ofps 30, it writes the file at the correct speed.  Here
 is the command I'm using (from Grandma)

 /usr/bin/mencoder -vf harddup -demuxer lavf -oac pcm -ovc lavc
 -lavcopts vcodec=mjpeg -vf scale=640:360 -noskip -mc 0 -ofps 30 -o
 PROXIES/$NEWNAME $i

 I just wanted to verify that specifying the frame rate of 30 is
 correct, even though I am recording at 60i.  I think it is because
 from what I read, 60i is 30p, and mencoder might be deinterlacing
 itI don't know about that last statement; it's the only thing that
 makes sense.


 Thanks!

 ___
 Cinelerra mailing list
 Cinelerra@skolelinux.no
 https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra

 ___
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 Cinelerra@skolelinux.no
 https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra

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