LectureNotes app

[avruma]

Thank you for the newest update. Is there a way to add an electrical engineering container like a ohm resistor capacitance symbols. I'm not a programmer, but is there an easy way to add those. Thanx

Sent from my GT-N8013 using Tapatalk

 

[AhmadLight]

@AhmadLight: LectureRecordings does not replay the actual writing process, this is not what it aims at. In case you think of producing something like https://www.youtube.com/watch?v=Ul_H1F2kaRg, this was done using the LectureVideos extension.

LOL
I thought that it records the lec using the front camera or something like that

Yes, that's what I'm looking for

EDIT: I get 2 separate files, one is 3GP (audio only) and another one h264 (video only)

the h264 wouldn't run except on my laptop (windows 7)


How to export the recorded Video?

EDIT 2:
I found the share option but only for 4.3 and up

 

[acadoid]

@AhmadLight: LectureVideos entirely relies on the Android MediaCodec and does neither contain any codecs nor any other encoding, decoding, multiplexing, or demultiplexing code (mainly to avoid legal problems). The Android MediaCodec APIs of Android 4.1 and 4.2 do not provide a multiplexer to create a container format such as MP4, AVI, or MKV. Therefore, LectureVideos produces two files per session, an H264 file containing the encoded video signal and a 3GP container file containing the encoded audio signal.

On devices running Android 4.1 and 4.2, you need an external tool such as FFmpeg to multiplex the video and audio signals into a container file. Lets say you have video1.h264 (the video stream) and video1.3gp (the audio stream), you can produce an MP4 file using the command

ffmpeg -r 12 -i video1.h264 -i video1.3gp -b 1.5M video1.mp4

where `-r 12´ states the frame rate (12 frames per second) and `-b 1.5M´ sets the output bit rate to 1.5Mbits per second. The resulting MP4 container file video1.mp4 can be viewed with all video viewers and uploaded to YouTube and other video platforms. There are graphical user interfaces available for essentially all OS, so that you do not need to worry about command line options.
There are FFmpeg ports for Android available in Google Play, but I would rather recommend to perform the multiplexing on a `normal´ computer.

There are alternatives to ffmpeg such as mkvmerge (which produces an MKV container file), one LectureNotes user published a short video on that, http://www.youtube.com/watch?v=kTTc-2EtPAw.

On devices running Android 4.3 and 4.4, you can still use an external tool to multiplex the video and audio signals into a container format (which can be advisable if you have specific optimization needs, for instance for streaming); furthermore, you can share the video as an MP4 container file in LectureNotes, and LectureVideos uses the Android MediaCodec API to multiplex the video and audio signals into the MP4 container format prior to sharing.

 

[wiznillyp]

A few suggestions

Hello,

Thank you for this wonderful app.

I found out about it through this thread, and use it for professional (I am an EE) and academic (PhD Student) purposes almost daily. I do have a few suggestions (please forgive me if these things are already implemented and I missed it).

1. More color selections in the standard pencil drop down. 4 colors is sometimes just not enough and changing colors from the top menu is already 2 clicks.
2. Paste with a "snap to grid" function. Sometimes I carefully draw diagrams with (grid) objects and then move them. Once they are moved, it takes a lot of care to realign the drawing to the grid to edit it. To clarify, it would be nice to have the cutter tool able to do a rectangular cut from the grid, and then have the move (or paste) option also snap to grid.
3. A Coordinate System (grid) would be great. Right now, I use the grid most of the time, so I make a my own coordinate system out of lines and arrows

Thanks again.

-WIll

 

[acadoid]

@wiznillyp: Many thanks, I am glad to hear that you like the app.

1. There are custom pencils for which properties can be freely chosen. To quickly change pencils, show the pencil toolbox.

2. Interesting idea, I noted it down.

3. There is a post http://forum.xda-developers.com/showpost.php?p=50379338&postcount=39 with a grid coordinate system.

 

[AhmadLight]

Today I used Lecturevideos to record about 90 min lecture

After finishing recording, I found it only 21 min!!!

But the written lecture is complete...

The flashing blue icon of recording was flashing till the last second


I have more than 21 GB still available, Don't know what caused the error

 

[acadoid]

@AhmadLight: Have you checked whether the video stream, the audio stream, or both got stopped?

 

[AhmadLight]

I remember that once the screen went off normally, that time when I pressed the home button, I found myself at the homescreen not Lec. Notes...

I just opened it again and found the recording icon still flashing

But I also think that this happened after 60min and not before that


Note: I was using LecVideos 1.0.0
I updated to 1.1.7 latest and will see if that's the problem

Will feedback again soon

Thanks

 

[acadoid]

@AhmadLight: The device going to sleep does most certainly cause troubles during a video recording.

 

[AhmadLight]

This time the recording time was 31 min
I pressed stop, it said, recording stopped
But I didn't find the record!!


If it's caused by sleep problem, how to prevent it??

 

[acadoid]

@AhmadLight: Sorry, I do not understand. Where did you search for the record(ing)?

There is an option `keep screen on´ in LectureNotes' display settings.

 

[AhmadLight]

@AhmadLight: Sorry, I do not understand. Where did you search for the record(ing)?

There is an option `keep screen on´ in LectureNotes' display settings.

I can find the recording if I go to (Notebook video reply)

I'd recorded three videos, the third one was about 30 min, but it didn't get stored don't know why

Do I've to keep the screen on the whole time?
That's very very excessive for the battery

 

[acadoid]

@AhmadLight: Yes, the device has to remain on during video recording.

LectureVideos aims at recording video tutorials and similar things during which there is constant talking and writing.

 

[AhmadLight]

@AhmadLight: Yes, the device has to remain on during video recording.

LectureVideos aims at recording video tutorials and similar things during which there is constant talking and writing.

hmmmm....

I'll check "keep screen on" option and feedback later

 

[AhmadLight]

Is there anyway to hide the action bar easily?
I don't like pressing the icon then dragging to the end to hide it

Can you add a button in the action bar to hide it? then we can press on the L.N icon to show it again if needed.


Another feature I like to see...
Is it possible to add some useful tools to the pen box?
It's easier to hide the action bar and just use the pen box to select between different pens and tools too

I also hope you can add a rotation button to pen box instead of going to settings to change its pose

And sorry for the many requests I make

Thanks

 

[acadoid]

@AhmadLight: The action bar can be hidden using the corresponding item in the menu at the app's launcher icon. An icon for that purpose, well, this could be done but I am not really crazy about it.

The pencil toolbox is not shown while eraser or cutter mode is active. Hence, one could only change to eraser or cutter mode but not back to pencil mode, as the pencil toolbox would get hidden (with the exception of one-time eraser and cutter, respectively).

One could also add pencil toolbox rotation on and off via button in the pencil toolbox. How frequent do you change the pencil toolbox orientation? Actually, I excepted users to decide for one pencil toolbox appearance, including one orientation or the other, and stay with it.

 

[AhmadLight]

As for 8'' screen. hiding the action bar is very useful, I just wanted to hide it easily..
you know, pressing the launcher icon then dragging to the bottom to select (hide action bar) every time I want to use (Eraser, cutter, undo or redo) really takes time.. especially in the landscape mode


And for the toolbox, you've a point.
but what I thought of is trying to make the action bar movable as the toolbox not to make area of writing smaller

So I thought of moving the tools to the toolbox which is easy to fold and move while writing

 

[pgibby081965]

Password protected?

Hi.

Just wondering if there is any way to set a password on either a notebook or a folder?

Thanks

Phil

 

[acadoid]

@pgibby081965: Not at the moment.

It is pretty straightforward to add a dialog when starting the app or when opening a notebook and require a PIN/password to be entered. But this will give users a wrong feeling of security, as anyone with a minimal computer knowledge will still be able to access your notes indirectly. A PIN/password protection makes only sense if the notebook pages are encrypted (note that some apps provide `secure´ notebooks only `protected´ a proprietary file format without encryption, which is a very weak approach). I have encrypted notebooks on my agenda, but encryption comes with several drawbacks when done in an app (slowing down reading and writing notebook pages from SD card, etc.), there are legal issue, and so forth, so that I have to ask you for some patience. In any case, if you are concerned with your privacy, consider to encrypt the whole SD card.

 

[vgergo]

Two bugs + one small request