apoon204
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Posts posted by apoon204
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Vesku, I am now in office and will try to see if there is any setting about 50Hz in my iMac at home tonight.
In 50P shutter speed is not so important. Background may look a little "strobo like" in fast pans but the pan and motion itself looks still quite smooth. There should not be any "jump frames".
-Apoon204, have you tried computer/monitor in 50Hz? Is it possible in your system?
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Hi Celli,
Thanks for your idea. You right, I can never know what shutter speed it uses while filming in auto mode.
So as if you suggested the choppy look are due to the high shutter speed, is there any solution (in rendering/processing) to smoothen it in post-production?
Thanks.
Since you mentioned you are a newcomer in movie i just ask an obvious question, when you shoot your AVCHD/MP4 movie at 1080/50p@28Mbps at what shutter do you have your cam? It should be no more than 1/100s for 50p, achieved by using nd filters so your aperture wont be skyhigh with that low shutter. On a sunny day your cam might choose a higher shutter in auto mode, maybe like 1/500s to compensate for the light. If you than pan your shot with a 1/500s shutter, that might look quite choppy on any screen that does not smoothen out video.
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LCD or plasma? A plasma will show much smoother motion with its sub field motion than any computer monitor, which may be what you're seeing.
Thanks TheRenaissanceMan.
My Panasonic Viera LCD TV is TH-L42ET5H.I need to double check if there is any motion enhancement option turned on...
But my point is, I just wanna make sure the clip I recorded (1080, 50P, 28Mbps) from GX7 is problem-free. Those are the clips of my kids memory. Because as far as I know the 50P/60P should be smoother than 24P/25P in theory?
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No matter how smooth you record your video, it will still look smoother on your TV due to the feature I mentioned earlier. It's not that your camera is at fault, it's that your TV is doing extra work. Also you should note that almost all films are shown at 24fps; nowhere near the 50fps your camera is recording.
Thanks Inazuma
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People watching videos with computers dont like to have smooth or realistic motion. Blurred or jerky motion is the "standard" of cinema production and computer monitors. Using a TV for real cinema experience is not recommended here. At least you must switch off every features that may improve motion resolution or smoothness. And many say that shooting 50P or 60P looks cheap and videoish.
Switch your graphics card/monitor to 50Hz and you get decent (but still blurred) motion with your GX7. TV does that automatically but improves motion resolution too (which is of course a bad thing).
Computer monitor can never show motion resolution better than 300 lines even with 4k. Still a cheap fullHD TV can show about 1000 lines of horizontal motion resolution. More info about sharp motion here:
http://***URL removed***/forums/post/52942296
Many thanks Vesku. I also read your replies in my similar thread at dpreview. Lots of discussion and knowledgeable information that I may take some time to go through and get back to you guys later. In fact I didn't expect there are lots of discussion about it (I thought no one will reply as I couldn't find any related discussion online before). Glad that I can hear from you
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Thanks Inazuma.
So does it mean the video from GX7 is "not as smooth" as we thought?! You said "TV create frames", that mean the original 50p video is "not enough frame" to show the smoothness on screen? Would you mind explore more on that (as I am a newcomer in movie)?
Many many thanks.
Are there any opinions from other members? I'd like to take movie as best as it can as those are my kids memory... any thoughts to make the existing videos to playback in better quality?
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Hi all,
I am using Pana GX7 to shoot AVCHD/MP4 movie at 1080/50p@28Mbps. Long story short, if I playback the clip on computer (latest retina iMac with i7 and 24G RAM), it looks a little bit “jump” frame. It happens significantly when the video is panning. It just looks not smooth. Both VLC and Quicktime perform the same. I tried both AVCHD and MP4 format but no difference at all – same problem.
However, if I play the same file on my Panasonic Viera TV via USB (direct playback the MTS file), it is silky smooth on the screen, everything just perfect.
Has anyone have similar experience?
Question: is there some technical issue / differences behind the computer and TV on processing the video clip? Am I missing something on setting? Is it possible to render the video to be playback in computer like the quality in TV?
Many thanks for your advices!
50P vs 60P
In: Cameras
Posted
Question 1:
I live in PAL region. I recently acquired a camera that can shoot 1080 at both 50p and 60p. I wonder if that 10 frames really make significant or obvious differences in terms of video smoothness (especially for fast action, for example, panning)?
Question 2:
The reason I asked is because I realized nowadays most of the PC monitor, or iMac for example, running at 60Hz refresh rate by default. I tried to watch both 50p and 60p clip from them. I found the 60p looks silky smooth, while 50p looks a bit, I don’t know what to describe (maybe jerky?), not as smooth as 60p. I wonder if that difference is caused either by the monitor refresh rate, OR that 10 frames?
Question 3:
I have tons of other footage at 25p/50i from other old cameras. Should I compromise for that 10 frames and shoot all the way at 50p from now on?
Question 4:
Further to Question 3, if I am going to mix and edit all the footages together in future, will 60P conversion to 50P/50i/25P become nightmares? If yes, I should sacrifices that 10 frame and shoot my master raw as 50P.
Many thanks for your comments!
Arno