Sena Prism Cam - Mini Review

Discussion in 'Equipment' started by mosey.levy, Dec 6, 2014.

  1. mosey.levy

    mosey.levy Long timer

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    They seem to be ignoring stand alone cameras and are focusing on integrated cameras plus intercoms.

    My problem is that means I get a lesser intercom and a lesser camera.

    I want 8 way intercom or even 16 way mesh. And I want a camera with a hot swappable battery.
    #81
  2. RBEmerson

    RBEmerson #1 Earl Pitts fan!

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    It's interesting that so few action-cam people follow the concept seen in the Prism. I suppose the tube cameras come close. If Sena can't help replace Franken-camera, I'll look closer at the TomTom Bandit. It can go to 4K, but at 15 fps (why bother??). However it does 1080p@60 fps. What I can't sort out is whether I can have external power and a remote mic. At the moment it seems to be one or the other, but not both. I tried to get on the TT forum, to sort the question out, but the wheels fell off over passwords or something. And I can't email the sys admin to sort it out - have to login first. Gngh...

    There is a reference to a BT link, but I doubt that the Bandit and 20S will exchange any data. I'd like to be wrong about that, though.

    Past that, a beefier case, a better latch bar, a place for a safety loop (works with the waterproof case, but not "bare") and for a strain relief when using external power would all be big helps. And, of course, 1080p@60 fps. Although 720p@60 fps isn't too bad.
    #82
  3. RBEmerson

    RBEmerson #1 Earl Pitts fan!

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    From Sena? No need for a hot swap (IMHO room for far too much room for mischief - aiming, etc.), go with an external battery pack. My 50,000 mAh pack is good for a day of non-stop videoing. Ditto for the 64 Gb hack. I suspect, though, 1080p@60 fps would challenge 64 Gb. If Sena releases a Mk II with 1080p, I hope they'll support 128 Gb. That would make a full day of shooting possible. :thumb
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  4. mosey.levy

    mosey.levy Long timer

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    If this ever comes out it might be my next camera. Stabilization and an awesome companion app for editing.

    https://revl.com/

    Also I know you don't like the go pro form factor but the garmin cams have Bluetooth audio I think and a ton of sensors.
    #84
  5. RBEmerson

    RBEmerson #1 Earl Pitts fan!

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    Revl looks OK nothing really jumps out. Physical stabilization is battery death waiting to happen - those actuators don't run on air. Editing on a phone? Clueless newbies and obsessive Instagram people do that. People with any self-respect for their video use a real editor, even if it's a simple one, on a screen big enough to tell they were photo-bombed.

    I looked at Garmin. Briefly. The VIRB XE and the gold-plated VIRB are killer expensive and... GoPro shape again. :scratch
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  6. Grreatdog

    Grreatdog Long timer

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    For me, the single biggest drawback for the Prism is the lack of a mobile app that lets you see what the camera is filming. It is mind boggling to me that Sena still doesn't offer that.

    I don't want it for editing - I want it for aiming. Using their clip on swivel mount means re-aiming is a crap shoot every time I remount the camera, get swatted by a branch or even set my helmet down.
    #86
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  7. RBEmerson

    RBEmerson #1 Earl Pitts fan!

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    I don't do any off-road to speak of, so getting smacked by branches isn't a major issue for me. I do get a little finicky about how I take helmet off and where I set it down. In general, as long as I can find something flat that reflects (curved mirrors don't qualify), I can set the camera up reliably. It's hard to describe in text, but take it that aiming isn't a problem. I wish Sena had a tighter grip on the mounting ball for the helmet mount. OTOH, maybe it's just as well the camera will try to move if it's hit.

    Once rolling, viewing while filming is out. If the idea is only to verify aim, there are effective ways to do it by just looking in a mirror or flat window.

    So, no, I don't fault Sena for not including real-time viewing. Which would raise the Prism to GoPro prices. Pass.
    #87
  8. Grreatdog

    Grreatdog Long timer

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    Needing to re-aim is all common for me. :lol3

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  9. RBEmerson

    RBEmerson #1 Earl Pitts fan!

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    Ah well, yes, I see... I can only suggest "Doctor, doctor, my camera loses aim when I fall over." "Don't fall over." :D
    #89
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  10. mosey.levy

    mosey.levy Long timer

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    Regarding editing the truth is I rarely have time to cut things together properly. So I just end up with hours of footage on hard drives. I look through it - take a few screen grabs and post them on Facebook or something.

    So for ME an app that would automatically do 80% of the editing based on g force, altitude, heart rate, etc would be amazing. I'll do the finishing touches quickly and have a quick video memory to share and look back on.


    Sent from my iPad using Tapatalk
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  11. RBEmerson

    RBEmerson #1 Earl Pitts fan!

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    It's not that hard to edit video. There is a learning curve, but the results are worth the effort. Shotcut, a freebie but goodie is capable of sophisticated work, but can turn out easy-peasy "check this out!" videos, too. I assume Microsoft has some sort of editor, and I assume Apple does, too.

    Betting on camera-assigned cut points? [/shudder]
    #91
  12. mosey.levy

    mosey.levy Long timer

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    O I have no problem with the technical aspect. It's the time available. Between work, 3 kids, and my motorcycle hobby I don't have much time for video editing. I'd rather be out riding.

    On that note I'd rather have medium talent AI editing with me only putting 20% effort in compared to me editing the entire thing. Take 1 day worth of video and give me a 1 or two minute fun video clip in under 10 minutes.

    Here's a feature from the Tom Tom you mentioned.
    SENSORS
    Built-in motion sensors automatically identify and highlight thrilling moments in your adventures.

    That's the future for most people out there. Tie in a heart rate sensor and a butt clench sensor and you can get some fantastic AI video editing :)


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  13. RBEmerson

    RBEmerson #1 Earl Pitts fan!

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    I'm pretty sure I've already inflicted the following video on this thread, but...

    It came from about 45 minutes of riding (one file).

    Editing your video:
    1. Copy the file to PC (plug Prism into USB ports and use File Explorer to copy video file)
    2. Launch Shotcut (I usually type "Shotcut" in the start menu)
    3. Open file in Shotcut ("CTRL-O")
    4. Click on "+" in Shotcut to put the entire 45 minutes in the timeline (where editing happens)
    5. Hit "Home" key to move the cursor ("playback head" if you want to speak editor-ese)
    6. Slide the playback head to where the sequence starts (video and audio is played back in Shotcut's internal monitor)
    7. Type "S" to break the video at the sequence start point ("in point" in editor-ese)
    8. Click on the footage to be cut and type "CTRL-X" to cut it and slide the rest of the footage to the start of the timeline.
    9. Slide the playback head to the end of the sequence ("out point" in editor-ese)
    10. Type "S" to cut off everything after the sequence
    11. Click on the stuff to the right of the playback head and type "CTRL-X" - the timeline now has only the stuff you want.
    12. Hit "Home" key and click on the > (triangle facing to the right) under the playback monitor to play back your video masterpiece. Repeat as desired. :D

    To save your masterpiece:
    1. Click on Export File tab.
    2. Enter desired disk (C:/, etc.), folder, and file name (routine Windows stuff) and hit "Save".
    3. Watch the "Job rendered" percentage until it says "Done"
    4. Watch the video in the selected location with the chosen name.

    It takes much longer to read 1-12 than do it. The slowest points are waiting for Shotcut to launch (dunno why - it just is) and waiting for the render (lots of stuff to process) - the faster the PC, the faster the whole process, of course. You can walk off at any point, sort out the unruly kids, go for a ride and shoot more video, whatever, and resume when you can/want.

    I needed under ten minutes to do the video. Obviously it gets easier with practice and learning some useful tricks (Type "L" to start playback at the playback head, type "L" again for double speed; "J" for reverse, and "K" to stop playback)

    The advantage of using DIY editing is you'll get the full story, not just what the camera says you want. :)

    - - - - - -

    WARNING:
    Whenever a camera (or SD or stick) is attached to a PC/Mac for any reason, use the "Eject" option first before disconnecting it (eject with whatever file listing tool is used, regardless of OS). Otherwise the SD's content may be damaged. Don't say I didn't warn you.
    #93