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[Q] Force low FPS to make time-lapse videos

Hi!
I used to be a lurker around here (only looked, never posted), but now I'm a proud noob =D
My problem is: I have a Moto Milestone, and tried to use it as a time-lapse camera for driving, but the minimum time between frames I could get was 5 seconds, and the resulting video was just bad (and any app crashed after a few frames). Ideally it should be 1-2 seconds between frames. I was wondering if there could be a way to force lower FPS on the video camera to make the low-fps video. Of course the video would be sped-up later to get the nice time-lapse effect.
Is it possible?

[TIPS]A/V out of sync when compressing 720p videos

I'm sure you noticed that when you record a 720p/1080p video with a smartphone, the bitrate will be pretty high, in the 10-15Mbps area.
This is not really necessary if you watch the videos just on your smartphone or on a limited size LCD TV, and you can just recompress it using x264 codec at about 2Mbps without severe quality loss (unless it's a sport video).
However you'll notice severe audio video out-of-sync issues if you compress both audio and video tracks and DON'T CHOOSE MP4 (which is the default container for the videos recorded by the smartphone) as default container for your x264 video.
Furthermore, if you want to compress and then JOIN different videos, you have to compress them one by one and THEN join them, otherwise you'll notice glitches in the playback.
I tried with mkv and avi but I kept having sync issues, so I thought that it was worth to share this tip.

SUPER @ video conversion program
Have you tried a video conversion program called SUPER @? Here's its link:
http://www.erightsoft.com/SUPER.html
The program can be pretty intensive in terms of memory used but it usually does a great job for me and bitrates can be chosen for just any vid type you might want to save to. Usually, I turn off my internet connection prior to executing it (so it can't do an update check) and run it by itself.

Yep, I guess it's something similar to Wondershare Video Converter Ultimate, it's just that I prefer more control over encoding parameters (so I tend to use programs such as Avidemux)

flapane said:
Yep, I guess it's something similar to Wondershare Video Converter Ultimate, it's just that I prefer more control over encoding parameters (so I tend to use programs such as Avidemux)
Click to expand...
Click to collapse
You've probably already thought of this but you can load your video in virtualdubmod and have it change framerate so video and audio match perfectly.
No re encoding needed and even on large files it takes less than a minute or two.
If you find virtualdubmod won't recognise the video you can download a suitable vfw codec and it should then.
Dave
( http://www.google.com/producer/editions/CAownKXmAQ/bigfatuniverse )
Sent from my LG P920 using Tapatalk 2

The problem is that vdubmod won't help, because framerate is not constant and it varies from some 19 to 30fps, at least on Vibrant.
In a lot of cases the fps number gets lost during encoding (and you'll obtain a video which has a constant framerate of 29.97fps), because softwares such as Avidemux doesn't have an option to leave the FPS untouched (or at least it seems that the fps number gets lost if you want to use MKV as container).

flapane said:
The problem is that vdubmod won't help, because framerate is not constant and it varies from some 19 to 30fps, at least on Vibrant.
In a lot of cases the fps number gets lost during encoding (and you'll obtain a video which has a constant framerate of 29.97fps), because softwares such as Avidemux doesn't have an option to leave the FPS untouched (or at least it seems that the fps number gets lost if you want to use MKV as container).
Click to expand...
Click to collapse
I've used it in similar situations so it might be worth a try as it doesn't need a constant framerate, it looks at the audio length then adjusts video framerate to match.
If it is just a problem created while actually recording, ie if the video itself records at varying framerates it would suggest that it can't write to storage quick enough and is dropping frames.
In that case you would need to record in lower resolution or perhaps find a replacement camera application and see if that could fix your problem as sometimes default apps are not all that good.
It also makes a difference if you can close un needed background apps to free ram if low on memory. That can cause frames to drop as well.
Dave
( http://www.google.com/producer/editions/CAownKXmAQ/bigfatuniverse )
Sent from my LG P920 using Tapatalk 2

Actually it seems that the framerate is lower in case of dark scenes, which seems to be a behaviour found on other phones. I'm writing on the internal storage and I always kill everything before taking a video, so I gotta try another Camera app and see if anything changes.
I'll also take a look at that interesting vdubmod feature, I didn't know it.
Thanks.

flapane said:
Actually it seems that the framerate is lower in case of dark scenes, which seems to be a behaviour found on other phones. I'm writing on the internal storage and I always kill everything before taking a video, so I gotta try another Camera app and see if anything changes.
I'll also take a look at that interesting vdubmod feature, I didn't know it.
Thanks.
Click to expand...
Click to collapse
Is there a setting where you can change encoding parameters of your x264 on your phone?
On a pc the codec has a feature that can compress more data per frame in darker areas, on a phone I don't know if that is active or not but might be worth checking. Sorry I couldn't help more but hope you find a solution.
Dave
( http://www.google.com/producer/editions/CAownKXmAQ/bigfatuniverse )
Sent from my LG P920 using Tapatalk 2

[Q] ICS 3Dvideo mods

Using a pc program "mediainfo" I noticed the 3D video encoding has changed from the codec used in gingerbread. The codec is now listed as iso which is common enough, but the codec also uses "frame tripling". The frame rate is 30fps so are we getting a 30fps with 3 frames making 1, effectively 90fps or 10fps with 3 frames duplicated to "make" 30fps.
The new 3D files cause windows explorer to continually try to analyse the mp4 files and will not automatically unmount the sd card as it is continually trying to recognize the file. The same problem also when the 3D videos are transferred to PC and the folder is viewed in explorer, cannot even re-name them with a different extension to stop the lock-ups.

Sorry to say, but 90 fps is not even true. The S3D hardware is limited to only TWO images, so it's basically split-image, either 30fps or 60fps, both left and right images. If you try 90fps, you will have image ghosting which the transparent ceramic plate is timed wrongly against video frames or worse - you will see flashing or wavy patterns which will cause you the headache. And, LCD is normally locked at 60 hertzs, as is the case with non-3D LCDs.
EDIT: The file is basically a MP4 file - with some capable media players, probably like VLC player, it will display two "squeezed" images as seen by two cameras on the 3D phone.
Sent from my LG-P920 using xda premium

I didn't have a problem moving or viewing the 3D files created in gingerbread. It seems the new codec used by ICS is causing windows problems as the codec is not recognized, windows just keeps trying to update the thumnails on the sd card when connected via usb or when removed and in a sd card reader.
Just wondered if anyone has found a way round this problem.
The "frame tripling" that is reported in the pc program {mediainfo} is a part of the codec description and cannot seem to find any mention of it in this forum.

Interesting... I have a modified ICS version of 3D camera, modified for CM10 - will try this. BTW, I don't like using thumbnail feature on Windows - nothing but a PITA.
Sent from my LG-P920 using xda premium

Hmmm. I have Nvidia 3d vision and drivers on my pc and I can watch video directly over hdmi and copy them, etc. Maybe you need the Nvidia drivers???

Or updated Catalyst for AMD Radeon HD 4k or later. I have Radeon 4670, BTW. It's still a great general-purpose video card.
However, I don't have a 3D monitor. Definitely outside of my budget.
Sent from my LG-P920 using xda premium

The "lockup" of file monitoring in widows7 for this new codec is not my main concern,annoying as it may be. I am worried about the mediainfo report of the frame mode is "frame tripling". my own research has been that 3D capture on a 3D camera by panasonic or philips or someone ACTUALLY records at 10fps and each frame is then repeated 3 times to give a 30fps video file This would give a poor motion quality video. I need to confirm that ALL o3D ICS updates have the same frame tripling video recording, as I have some "issues" with my upgrade in other software since upgrading to ICS .If the video recorded by the ICS upgrade is in fact 10fps and multiplied x3 then it is a novelty and not really persuing 3D by upgrading PC or TV to view real 3D.
Thanks for your reply's so far.

Still interesting, however. 10 fps seems slow but here, the first ever stereoscopic 3D camcorders have slower in-order processors, BTW - not as advanced as what's in our phones. So, in reality 90 fps is actually viewable as 30 fps when the 3D LCD timing is factored here.
Sent from my LG-P920 using xda premium

Sorry but don't understand the explanation or translation into english,

keith210350 said:
The "lockup" of file monitoring in widows7 for this new codec is not my main concern,annoying as it may be. I am worried about the mediainfo report of the frame mode is "frame tripling". my own research has been that 3D capture on a 3D camera by panasonic or philips or someone ACTUALLY records at 10fps and each frame is then repeated 3 times to give a 30fps video file This would give a poor motion quality video. I need to confirm that ALL o3D ICS updates have the same frame tripling video recording, as I have some "issues" with my upgrade in other software since upgrading to ICS .If the video recorded by the ICS upgrade is in fact 10fps and multiplied x3 then it is a novelty and not really persuing 3D by upgrading PC or TV to view real 3D.
Thanks for your reply's so far.
Click to expand...
Click to collapse
Indeed "TriDef Media Player" installed with my LG3D monitor can't play 3D movies from ICS but 2D is able to play.
"Stereo Movie Player" http://stereo.jpn.org/eng/index.html can't play 3D from ICS too.
Only "Stereoscopic Player" http://www.3dtv.at/Index_en.aspx can play that video.

Nvidia 3D Vision drivers work for me, but if you have an AMD GPU it may be different.

OK, works very well for me too.
After I uninstalled ffdshow

Reduce video file size?

Being new to the world of shooting and compressing videos I wanted to ask you which is the best way to reduce video file size without major quality loss?
I am not an expert in videos and optics, all the info about bitrate, codecs and stuff is alien to me. As a simple IT whiz/programmer I want to shoot quality videos (let's say, on long trips, vacation, etc) with a smaller file size, in order to record more. I just don't want to bring my laptop everywhere over the world and store a huge amount of data on it.
As an example, and everyone might have heard this, but many full length movies (+90 mins) with 1080p resolution and quite a quality image have a file size of approx. 2GB. I just took a 6 min FHD about some fireworks and it came out 1,2 GB. That's way to much and I can't afford to store videos that large if I intend to shoot some more...
So any idea on how to save up space and shoot quality but lower file size videos might help me, and I'd be grateful!
Cheers!

what apps let you record without a time limit?

what apps let you record without a time limit?
I heard that with the stock android camera app the time limit for how long you can record is about 30min, even if you have a big SD Card.
And I heard that the max limit is 4GB but you can't get near it with the stock camera app (and I suppose SD cards won't generally be that big)..
But I would like to record for e.g. > 30min sometimes. So, does that 30min or some time limit exist and if so , what apps let you record for longer than the stock app, storage permitting?
Thanks

gardina said:
And I heard that the max limit is 4GB but you can't get near it with the stock camera app (and I suppose SD cards won't generally be that big)..
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Click to collapse
SD-cards are FAT32 formatted. On this filesystem the max filesize is 4GB.

@jwoegerbauer well whether you are on point or not, besides the 4GB file size limitation, I heard(though not a good source), that there is a 30min time limit that hits first. And that there are some apps that don't have this time limit. And i'm asking if this time limit exists and what apps don't have this time limit?
And actually, https://pocketnow.com/android-11-finally-lifts-the-4gb-file-size-limit-for-recording-videos-sort-of There is a 4GB Android limitation that has been lifted recently. (So, nothing to do with FAT32). I don't nkow if maybe an SD card can be formatted as other than FAT32 eg exFAT or NTFS., on Android..
They mention that the Open Camera app can shoot larger than 4GB (no doubt not on FAT32).
The suggestion then is maybe the stock camera app can't.
I suppose if the stock also has a 30min limitation, then the open camera app won't.
Added
I notice that one of my videos is 1hr long so I think maybe there isn't a 30min limit!
Though my recording isn't 4K. I just read
"Only 4K video recording has time limit of 4 to 8 minutes(phone to phone varies) as it takes large amounts of storage space on your device and heats up the device to much greater extent. So to eradicate these two things, companies limit the video recording in 4K UHD in their devices. If you are recording in Full HD, 720p or other lower quality and have ample storage space in your phone to save those recordings then you can record as much as you want. "

@gardina
I only pointed out a technical fact. Nothing else.
If others know better, then be it.
BTW: I no longer participate this thread because I'm not interested in your issue at all.