[HN Gopher] Gyroflow: An open source advanced gyro-based video s...
___________________________________________________________________
Gyroflow: An open source advanced gyro-based video stabilization
tool
Author : G4E
Score : 175 points
Date : 2023-06-16 17:01 UTC (5 hours ago)
(HTM) web link (gyroflow.xyz)
(TXT) w3m dump (gyroflow.xyz)
| jelled wrote:
| I tried to use this with my Sony camera about two years ago and
| just could not get consistent results. Currently using Sony's
| Catalyst Browse which does a great job stabilizing the footage
| but the workflow is poor.
|
| Looks like Gyroflow has a plugin for DaVinci Resolve[1]. If the
| stabilization has been improved and could be done right in
| Resolve I will definitely us this.
|
| [1] https://docs.gyroflow.xyz/app/getting-
| started/installation/d...
| randomdata wrote:
| When I last played with it I was able to get quite good results
| with an A6400 and a phone as the gyro (the camera does not
| natively provide the data), except for when the rolling shutter
| is extreme, at which point it falls apart. The camera's
| notoriously slow sensor readout seems to be more than Gyroflow
| can accommodate for when it gets pushed.
| comboy wrote:
| Why is gyro data required? Doesn't the video itself contain
| enough information about the movement in vast majority of
| cases?
| dmbche wrote:
| Software based stabilisation morphs and creates artifacts
| in the video because it's tough to track motion in space
| from erratic camera movements - using a gyro gives your
| software a neat little guide on camera position during the
| shot, making stabilisation much more precise.
|
| Depends on applications! Doesn't matter if you're filming
| your child play baseball, but if you're shooting movies you
| want the best you can get!
| jelled wrote:
| Adobe (and others) have offered tools like Warp Stabilizer
| that analyze the image to calculate movement. In my
| experience they are able to smooth things out a bit but
| nothing compared to what a gryo can do. Plus those image
| based tools take a long time to calculate.
| Euphorbium wrote:
| How do you log gyro data in a phone?
| randomdata wrote:
| I used Sensor Logger.
|
| https://apps.apple.com/us/app/sensor-logger/id1531582925
| mikae1 wrote:
| Too bad Sony has crippled Catalyst Browse so badly. It doesn't
| even do 10-bit exports, so I refuse to use it with my A7S III.
| For proper formats and 10-bit export you need Catalyst Prepare
| which is (surprise) a subscription based software.
|
| My A7S III logs gyro data which Gyroflow happily reads.
| thyselius wrote:
| When stabilizing and shooting with a cinematic shutter speed
| (1/48s) you have the problem with motion blur from the camera
| shake. This blur looks very odd when stabilized. Does Gyroflow
| have any functionality or tips toward this?
| mikae1 wrote:
| Yes, stop using ND filters and use faster shutter speeds. Add
| fake motion blur. https://docs.gyroflow.xyz/app/getting-
| started/common-filming...
| JackGreyhat wrote:
| Unrelated to the software itself, but it is amazing how this
| website runs http without redirecting to https. You don't see
| that very often any more. It's probably an oversight, I guess :)
| sunflowerdeath wrote:
| Just tried it on some random GoPro footage and was very
| impressed! First - by the quality of stabilization. It is if not
| better then at the same level as in Gopro itself (which is
| considered having best e-stabilisation on the market). And
| second, that now I can shoot with disabled stabilization and
| choose amount of crop in post. I know that Sony offers similar
| thing with Catalyst Browse, but it is very unconvenient to use
| additional application to render stabilized footage, here I can
| just use plugin for Davinci and have seamless workflow.
| mikae1 wrote:
| If you want to try this you have to change the way you work with
| shutter speeds (and ND-filters) or else you will get horrible
| results. See: https://docs.gyroflow.xyz/app/getting-
| started/common-filming...
| rush340 wrote:
| I use Gyroflow to stabilize GoPro footage from autocross events
| since I can't stand the left/right panning from GoPro's
| HyperSmooth stabilization. Gyroflow lets me disable stabilization
| on that axis and the results look great for my use case.
| browningstreet wrote:
| I've wondered if there was any other way to resolve that... it
| makes a lot of my footage unusable.
| [deleted]
| deivid wrote:
| It looks cool, though I still find myself looking for
| Hyperlapse[0] alternatives. Hyperlapse seemed like magic when
| announced, particularly, not needing to crop large parts of shaky
| videos
|
| [0] https://blogs.microsoft.com/ai/hyperlapse-siggraph-2014/
| sorenjan wrote:
| Johannes Kopf, the main author behind the original Hyperlapse
| paper, is one of the researchers behind Localrf discussed here
| yesterday [0].
|
| I think Hyperlapse Pro [1], which stitched patches from
| multiple frames together to create new frames after doing some
| 3D reconstruction and then recreating a smoother camera path
| was mostly replaced with Hyperlapse mobile [2]. The Pro version
| was really slow, but the mobile version, which used the
| original frames from the video, could run in a reasonable time
| on a phone with almost as good result. Hyperlapse Pro is still
| available to download [3], Hyperlapse mobile you have to find
| the APK elsewhere [4].
|
| [0] https://news.ycombinator.com/item?id=36348483
|
| [1]
| http://johanneskopf.de/publications/hyperlapse/first_person_...
|
| [2] https://www.microsoft.com/en-us/research/wp-
| content/uploads/...
|
| [3] https://www.microsoft.com/en-
| us/download/details.aspx?id=523...
|
| [4] https://www.apkmirror.com/apk/microsoft-
| corporation/hyperlap...
| dmbche wrote:
| While it seems neat, the principle behind it seems to cause
| massive morphing and smoothing, and that's creating a lot or
| artefacting.
|
| This is fine for gopro footage or stuff like that, but for
| production video, the aim is to retain as much information as
| possible until export. I think the level of artifacting is just
| unacceptable for general stabilisation needs - and with today's
| cameras being 4k and up, framing 10-15% wider to adapt to the
| stabilisation crops makes much more sense.
| mikae1 wrote:
| For GoPros the real alternative to Gyroflow is paying for
| ReelSteady in GoPro Player. It is _very_ good.
| [deleted]
| hoherd wrote:
| I've been really happy with GoPro's TimeWarp feature as a
| hyperlapse alternative. I've used it on bike rides and car road
| trips and it's been awesome. It doesn't do the exact same thing
| as hyperlapse and does crop the frame, but with the GoPro's
| wide angle lens, the FOV is still really good. I'm even using a
| Hero7, but the newer models have much better TimeWarp features.
| robinduckett wrote:
| Utilised much by the FPV drone community, such that some camera
| systems even advertise Gyroflow compatibility
| skyde wrote:
| This software is pure gold. I would actually love to give a
| donation to support its developement if possible.
| dang wrote:
| Related:
|
| _Gyroflow: Advanced open-source gyro-assisted video
| stabilization_ - https://news.ycombinator.com/item?id=30259771 -
| Feb 2022 (65 comments)
___________________________________________________________________
(page generated 2023-06-16 23:00 UTC)