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Old 09. Oct 2013, 12:29 PM   #1 (permalink)
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Default Playing movies backwards ??

Hello

Do you know how to play .avi videos backwards with VLC, Potplayer, Kmplayer, BSPlayer or any other common multimedia player? (without using video editors)

regards
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Old 10. Oct 2013, 05:02 PM   #2 (permalink)
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I don't think it's possible with basic media players.

You'd need something like AVIdemux and then if you want to reverse the audio too, something like Audacity.
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Old 22. Feb 2014, 02:28 AM   #3 (permalink)
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Default step by step ...

... could you please describe how to reverse a movie without affecting the audio?

Sure would appreciate any help you could give me.
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Old 22. Feb 2014, 05:45 PM   #4 (permalink)
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I just fired up AviDemux to do a step-by-step and discovered that the version I have no longer supports video reversal which is a shame. Apparently because since v2.6 it works with virtual frames rather than real frames.

Anyway, I had a look around the net and found this great little tool, Video Time Reversal by Xander.

I just tried it with a couple of short films, it seems to work well and is very easy to use.

Open the program, then open the video you want to reverse. Next click the Options button (gear and screwdriver icon) and choose the settings you want. There are four options for audio - Remove sound, Reverse sound, Reverse sound in a separate wav, and Keep original sound.

There are a couple of options for output format and bitrate (I left both of those "Same as Input"), and a choice of fast or slow processing (slow processing will be for better output quality I expect). A couple more options at the bottom right but I just left those on the default setting. (Apparently it's some problems with exporting to *.mts which is why the option to convert mts to mov is there I think.)

Then just click the big Reverse button, select your output folder and off you go.

It supports a reasonable variety of input formats - avi, mov, wmv, 3gp, mp4, and mts. Available output formats seem to be "Same as input" plus a few tweaks on offer. Processing a 4 minute avi file here took about 90 seconds while mp4 seems to take quite a bit longer. The results are ok, even without playing with the more advanced options to tweak output quality.

The download link scores 0/53 on Virus total (Link scan) and the file itself 0/49 (File scan).

The installer and EULA seem clean, i.e. no unwanted bundling etc. It also runs happily if you just extract the program without running the installer at all.

Great find anyway : ) One of those things I'll use once in a blue moon but a handy tool to have around.



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Old 23. Feb 2014, 12:01 AM   #5 (permalink)
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THANK YOU so very much!

I do so appreciate this information as well as the simple step-by-step instructions.
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Old 23. Feb 2014, 01:50 AM   #6 (permalink)
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Oops ;-)
Although this program will come in handy, I'm sure, in the future,
I made the mistake of not knowing what to ask.

Do you perchance have another wonderful idea as to how to flip videos? -
in case I'm again not using the correct computer-terminology, what I want to do is keep the film in its order yet with the left side on the right side and v-v or as if looking through a mirror.

Hoping you'll once again be able to help,
and sending all the best of wishes for you, & yours, as well as many thanks,
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Old 23. Feb 2014, 08:54 PM   #7 (permalink)
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Ahhh wrong kind of reverse? It was the bit about wanting to leave the audio unchanged that made me think you meant reverse : ) "Mirror" is the word for it.

Anyway, do you want to be able to do that permanently or just to watch the video with the image mirrored?

If you just want to watch the video mirrored then a lot of freeware video players will do that ... tell us what video player you normally use, yours might have the option already.

If you want to permanently change the video, then again let us know and I'll post how to do it.

(Edit; I wonder if mirroring is what the OP meant as well )
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Old 23. Feb 2014, 09:56 PM   #8 (permalink)
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Yes, my computer jargon is not up to par ;-(

Yes, I'd want to be able to save the video;
VLC does not seem to do that either temporarily or permanently.

I've checked out Avidemux as well as Video Pad - (only the free versions).

Probably the o.p. did think this way as well, since it's a concept as used by Lewis Carroll and it makes interesting artistic effects; although rolling the tape from the end to the beginning can be used quite effectively - as seen in the Wizard of Oz ;-)

Eagerly looking forward to another very helpful reply - step-by-step please,
and sending many thanks your way,
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Old 23. Feb 2014, 11:18 PM   #9 (permalink)
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You have VLC..?

In that case you can do it already ... temporarily is quite easy, permanently is a little bit more involved but it works.

There are some freeware programs that do it very easily but I can't in good conscience recommend any of them as all the versions I've looked at are bundled with extras like Ask Toolbar or Open Candy and the supposed "opt out" isn't always available in my experience, indeed definitely isn't with one that I checked just half an hour ago.

So to mirror the video when playing in VLC, first open the video and then select "Tools" in the menu bar at the top. Then in the menu that drops down select "Effects and Filters".

A window will open called "Adjustments and Effects", in that window select the "Video Effects" tab (middle one) and then the "Geometry" tab. Click the "Transform" box and then in the menu beneath that, select "Flip Horizontally" and that's it. The video should be mirrored now.

If you look at the Eric Clapton vid in this screenshot you can see that "Old Grey Whistle Test" on the wall behind him is reversed -



To export the mirrored video, first you need to open Preferences from the "Tools" menu (or CTRL+P) then in the Preferences window at the bottom left, click "All" under the option for "Show Settings".

Next, in the list on the left find "Stream Output" and "Sout Stream" and "Transcode". After clicking on "Transcode", click the "Video Transformation Filter" box in the right-hand panel and then "Save" at the bottom of Preferences...



Right, nearly there! After you've saved and closed the Prefs window, select the "Media" menu at the top of VLC and then the "Convert/Save" entry.



In the "File" tab of the window that opens, click "Add" and open the file that you're working on. (Sounds odd I know but this is how it works.) Once that's in the list, click the Convert/Save button at the bottom and a "Convert" window will open.



Where it says "Profile" you need to click the menu to the right of that and choose the format you want for the output ... I find that MPEG4 is the most reliable here and you can always convert to another format afterwards. You can experiment anyway and see which works for you.

Next choose your output folder in "Destination file:", make sure that "Save as type" has auto-selected the format you want and then click "Start".

What will happen then is that the "Convert" window will close and VLC will say "Streaming" at the top. VLC's progress bar which normally shows whereabouts in the video you are, will now show the progress of the conversion. It will take a while, e.g. my 8 minute Clapton video took about 5 minutes.

Wait for the "Streaming" message at the top of VLC to disappear and that's it finished. When you play your converted video in VLC, make sure you've deselected the horizontal flip effect in Geometry-Transform otherwise you'll think it hasn't worked : )

Hope that all makes sense, let us know how you get on.

(I used VLC v2.1.3 to do this, if you have an older version the steps might well be different but you could get the latest one here - VLC Downloads. If you choose the 7zip or zip version you won't need to install it.)

Last edited by sicknero; 23. Feb 2014 at 11:30 PM.
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Old 24. Feb 2014, 03:33 AM   #10 (permalink)
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THANK YOU so very much!

I do so appreciate this information as well as the simple step-by-step instructions.

BTW - What else does VLC do?; I've noticed all these various (options ?) - even more now ;-)
but don't know what all it can do; is there a manual or help-video somewhere?

Some questions: while watching some movies, the audio is out-of-sync with the video; can VLC repair this?
Another question: some old movies have a shaky video; can VLC repair this?
And another question: when combining photographs into a video, could VLC change each photograph so that the whole will flow as if they were actually shot as a video? - rather than static-y?
Actually, I've been enjoying this amazing program and now would like to know all it can do;
including if it can be hooked to a television in order to download programs to the computer?

Whatever you can tell me, I would sincerely appreciate;
and I send you & yours all the best of wishes now & always,
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