Poor Quality Photos

Peter13

Newbie Joined: Jan 04, 2015 18:17 Messages: 45 Offline

Solved by

Jan 19, 2015 21:22

I have produced my first video and it looks great, except that I ended it with a photo (1.5 mb) which appears sharp and beautiful when I open it as a jpeg but blurry in my produced video. What am I doing wrong?

tomasc

Senior Contributor Joined: Aug 25, 2011 12:33 Messages: 6464 Offline

Jan 19, 2015 23:50

Need more information like the resolution, bitrate, and type of video you produced.

Peter13

Newbie Joined: Jan 04, 2015 18:17 Messages: 45 Offline

Jan 20, 2015 02:06

I produced an MP4 AVC video; the photo I used had a resolution of 325 pixels/inch at 7"x15". Where do I find the bitrate?

ynotfish

Senior Contributor Location: N.S.W. Australia Joined: May 08, 2009 02:06 Messages: 9977 Offline

Jan 20, 2015 03:07

Hi Peter -

The image proportions are 15x7, yes? So - it looked like this on the screen (assuming a 16:9 project)?

That image (straight off a Canon 7D) was cropped to 4837x2257 (same proportions) and produced as MPEG-4 4K @ 50MBps - looked OK.

What is the resolution of the photo (in pixels)? Did you resize the image to fill the screen? Apply any motion?

If you right click on the video in the media library and select properties, it should tell you the bitrate.

Bottom line - it's ALWAYS a compromise producing photos to video format.

Cheers - Tony


Filename	15X7.png	Download
Description
Filesize	256 Kbytes
Downloaded:	282 time(s)

This message was edited 1 time. Last update was at Jan 20. 2015 03:07

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Peter13

Newbie Joined: Jan 04, 2015 18:17 Messages: 45 Offline

Jan 20, 2015 16:59

The resolution of the photo, which I put together in Photoshop, is 325 px/in and the photo size is 7"x15". I did not crop it to put it in my video and I did not apply motion. The bit rate of the video is 6.15 Mbps.

ynotfish

Senior Contributor Location: N.S.W. Australia Joined: May 08, 2009 02:06 Messages: 9977 Offline

Jan 20, 2015 17:25

Hi Peter -

I figured it wasn't an image from a camera! I was asking because I know that in some earlier investigations about Panoramas in PDR, we worked out that the more elongated the photo the poorer the produced file looked.

What I meant by posting the screenshot is to see if the image was letter-boxed like that.

To be honest, I don't really have by head around pixel density - except that bigger is better (like a Retina iPhone - 326). I get even more confused when people who apparently know what they're talking about use DPI & PPI to mean the same thing. I don't understand what impact that might have on producing a video.

There has to be a simple reason the image came out so poorly in your video.

What is the resolution of the photo in pixels? Is it 4875x2275? (that's what I get by multiplying 15 & 7 by 325, but I may be calculating it the wrong way). That's about 11MP

What exact profile did you use? You said it was MPEG-4 @ 6.15MBps - what resolution? 1920x1080? Bigger? Smaller?

Could you attach the image here? or is it private?

Cheers - Tony
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sunny07300

Newbie Joined: Dec 18, 2013 02:28 Messages: 1 Offline

Jan 21, 2015 05:22

HI


Filename	20140606-8.jpg	Download
Description
Filesize	12 Kbytes
Downloaded:	74 time(s)

This message was edited 3 times. Last update was at Jan 21. 2015 05:24

PlaySound

Senior Contributor Joined: Dec 02, 2010 10:26 Messages: 2031 Offline

Jan 21, 2015 07:18

The picture you posted is low resolution, seen on the big TV or the monitor is bad.
Image size 163x204 pixel
DVD Image size 720x480 (NTSC) AMD-FX 8350 / 8GB DDR3
SSD SUV400S37240G / 2-HD WD 1TB
AMD Radeon R9 270 / AOC M2470SWD
Windows 7-64 / PD16 Ultimate

ynotfish

Senior Contributor Location: N.S.W. Australia Joined: May 08, 2009 02:06 Messages: 9977 Offline

Jan 21, 2015 12:33

PlaySound -

Don't worry. That's someone else posting mysterious little things to put you off the scent - not Peter13.
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Peter13

Newbie Joined: Jan 04, 2015 18:17 Messages: 45 Offline

Jan 25, 2015 23:42

I tried a higher resolution photo, which improved the image on my video a bit, but it is still much fuzzier than when I call up the original jpeg. All the tutorials show videos of stills sharp and clear, so I must be doing something wrong.