вс, 25 сент. 2022 г., 08:56 Miroslav Rovis <[email protected]>:
> Reusing what I wrote in late last night's thread. > On 220924-23:31+0200, Miroslav Rovis wrote: > > I've been using VP9 (previously VP8) webm a lot. E.g. anywhere > > you go from: > > https://www.croatiafidelis.hr/2022/ > > or, to take just one sample (4 minutes): > > > https://www.croatiafidelis.hr/2022/Jazovka/VID-2022-06-22-1034-Jazovka-procesija.webm > > It's nothing but motion plugin set up, blur plugin in the > > bottom video at 100%, and go render. Then work the audio > > separately, mux and post. Of course, the stabilizing is slow, > > motion plugin takes long to calculate. > > > > But all those people moving can be scrutinized in a lot of > > detail, as if I filmed with a mobile phone attached to a good > > stabilizer, and instead, the original was a shaky video as > > ever, because I held the mobile with just my hand. > > > > Cinelerra can stabilize you videos well. It's worth the > > time-expensive learning curve to get to know how to do it. > > > > Here are some comparison videos with both the shaky and > > stabilized video (however I've gotten better since then, these > > are all old, but I have no other comparisons) > > > > e.g. from: > > https://www.croatiafidelis.hr/2019/ > > the videos e.g.: > > > https://www.croatiafidelis.hr/2019/Jaska/190824-Jaska-Vukovic-demo-1-stabilize.webm > > or from: > > https://www.croatiafidelis.hr/2015/Macelj/Macelj-2-cmp.php > > the video being: > > https://www.croatiafidelis.hr/2015/Macelj/150607-Macelj-HebrangCOMP.webm > > But the above do not sufficienlty well demonstrate how well > Cinelerra can stabilize shaky videos. > > I think I have a better example that I hope I can offer. > > But I plan to make it both a demonstration of this capability > and a tutorial so other users can benefit from it, on the one > hand. > > And on the other, I want to show the issues that come across in > Motion Plugin usage. > > I can say what it is right now, but that's dry and no way > immediately plausible. Here: > > The fist issue: > When using Motion Plugin, a last-used setting (previusly used, > even in a different video) is written in the new XML along with > the newly setup numbers for a particular part of a video to > which Motion Plugin Effect is attached. And it sometimes messes > up the XML, and rendering does not get what the user put in. > > The second issue: > And, sometimes, there appear to be problems with some Cinelerra > cache somewhere so bad that tweaking the Motion Plugin settings, > while written correctly in the new XML, do not actually apply. > The rendering gets the user the earlier tweaked result no matter > the new editing. > try to look in /tmp folder? may be some old result stuck there ... (purely from memory) > While I am not certain I can, within the time that I can set > appart for this, show how to reproduce the second issue, I > believe I can show the first issue within, hopefully this day > today. > > I want to do it along with demonstrating a very good motion > stabilization on not-too difficult parts of a 1m 30s video that > otherwise would be almost bad for viewing. > > I plan to post it, God permittign, at: > > https://croatiafidelis.hr/foss/cap/cap-220925-cinelerra/ > where, at the time of writing this, there is only the short > video: > VID_20220910_133415_5.mp4 [*] > that I want to use for this > demonstration/tutorial/bug-report all-in-one. > > Regards! > > ---- > [*] The timestamp in VID_20220910_133415_5.mp4 is for 2022-09-10 > 13:34:15, the start of my filming, but that's part 5, which I > obtained with cutting the VID_20220910_133415.mp4 with mkvmerge. > It's and event that the media exanded for a few days on, an, > thankfully innocuous standoff with Croatian police... I want to > show how good reporting can be done with simple cheap mobile > phone camera, made good only after motion stabilization. > I mean, look at that video, it's so shaky because I walked and > even talked and waved (well, that's not seen) at people... > Stabilization is absolutely necessary. > This is what you should get (SHA256 of the video): > 8ae65c8b17b3d607020c392323fa5ab8569bd40083648d808602a0dfffc8f1f9 > VID_20220910_133415_5.mp4 > > -- > Miroslav Rovis > Zagreb, Croatia > https://www.CroatiaFidelis.hr > my PGP-key: > https://www.croatiafidelis.hr/FCF13245ED247DCE443855B7EA9884884FBAF0AE.asc >
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