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Thread: 1080i or 720p

  1. #1
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    Default 1080i or 720p

    Hi folks,

    My Panasonic camcorder has several shooting options. Until now, I have only used the 1080i setting as I was keen to get going and assumed that was the best setting. As I am learning more though, I am wondering if I should be using the 720p setting for films that are destined to live online?

    I am assuming the 'i' is interlaced and the 'p' is progressive? If that is so, am I right in saying that progressive is better for online video than interlaced?

    Thanks in advance for your help.

    Mike
    Last edited by MikeTV; 08-30-2010 at 02:06 PM.

  2. #2
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    OK, I have found the answer to this question here:



    However, my camcorder settings are listed as:

    PH1080
    50i

    PH1080
    25P

    PH720
    50P

    PH720
    25p

    HA1080
    50i

    HE1080
    50i

    HA1080
    50i


    Can anyone help me decode the different shooting modes listed at all please?

    Thanks in advance for your wisdom!

  3. #3
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    The video clip you found isn't all that good because the annoying presenter has made his mind up that 720p is "better" than 1080i end of story. It isn't as easy as that, especially when it comes to footage with fast movement.

    However, perceived wisdom is that progressive is much better for internet-delivered movies and I've come to the same conclusion. So, unless I know that it's only going to be shown on a crt television, I would personally shoot progressive.

  4. #4
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    Thanks Rob, that's what I thought.

    I don't suppose you can fathom what my shooting settings are, can you? The manual doesn't explain and I haven't found anything via Google that comes close to explaining them thus far!

  5. #5
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    Well, the bits you've probably sussed out yourself.

    25P = 25 frames per second Progressive (ie 25 full pictures per second)

    50i = 50 Fields per second Interlaced (ie 50 half frames per second)

    The 1080 or 720 is the number of lines.

    The HE, PH and such... no idea sorry.

  6. #6
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    Thanks for that, Rob. Appreciate you taking the time to reply. I am a complete beginner, so it really means a lot when people are able to steer me in the right direction.

    So of all the settings I have, when making video that will be viewed on the internet, I am better off sticking with 1080 25p, right?

  7. #7
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    I would say that 1080 25P is the best you can get for what you want. It's what they shoot feature films at so it must be good!

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    Thanks again, Rob - I'll try that for my next shoot!

  9. #9
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    A Quick Google gave me this for the HMC80 (I know you've got the 41, but my guess is similar)
    "Four professional AVCCAM HD recording modes: HA mode (approx.17 Mbps), HG mode (approx.13 Mbps), the extended recording HE mode (approx. 6 Mbps) and the highest-quality PH mode (average 21 Mbps/Max 24Mbps)."

    So it's all down to bit rate and thus how much space you take up on your media.

    When you bear in mind that standard definition DV has abit rate of 25Mbps, you can see how much compression must be going on in AVCHD (and why you need a lot of oomph to edit it)
    Tim

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    Tim, thanks so much for taking time to look for this ... I spent hours rooting around and came up with nothing.

    So am I right in saying that a lower bit rate means I can record more minutes of video BUT it will be more compressed, and a lesser quality to that which has been recorded at a higher bit rate?

    If that's all right, then when shooting for an internet audience I should be looking at PH mode, and in progressive, not interlaced, right?

    Thanks again, Tim. Bit by bit the mystery unravels!

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