New app: TelloFPV for Android
- Thread starter volate!lo
- Start date
Here is the background without a nickname.
Thanks! I will try that for the next beta. Let's see what people think
raulvolador
Well-known member
raulvolador
Well-known member
@volate!lo,
I read carefully what you said about bitrate. I was surprised becouse I was using bitrate AUTO from months. I performed some test I want to share with you:
AUTO BITRATE REPORT
From the web
When applied to Tello It means higher bitrates gives us better image resolution at the expense of less fluidity/less smoothnes/more dropped frames.
I didn't know video bitrate can be measured by software tools. This task can be achieved by free tools like BitRate Viewer or VLC Media Player. As I have recorded hundreds of videos in AUTO bitrate I performed a deep study:
I discover all of my TelloFPV AUTO bitrate videos follows same pattern. Video starts at 4 Mb/s high bitrate and continues with that value until drone moves away and signal gets worse, that moment bitrate decreases until it reaches lowest value 1 Mb/s and it will not rise to high values anymore, no matter signal increases. See this sample:
It means AUTO bitrate WORKS but it does not work well, becouse bitrate should increase at the end of flight when returning home and video link signal improves.
I continued testing. I try an old @bluejune aTelloPilot video. I was shocked discovering AUTO bitrate WORKS PERFECT.
Notice high bitrates at the start of flight, bitrate decreases as Tello moves away and bitrate increasing again at the end of flight. I reviewed this old aTelloPilot videos and could verify that's the way it works. Perfect image at start and the end of video.
CONCLUSION
Many times you don't know what type of flight you are going a fly. We need high bitrates for close flights and lower bitrates for distant moments. BITRATE CAN'T BE STATIC. I propose you this ideas:
- - Try to make native AUTO bitrate works right. It seems than BlueJune got it
- - Create your own AUTO bitrate. It means, bitrate will dynamically changes depending of RSSI signal. For example 90db -> 4 Mb/s, 70db -> 3 Mb/s, 40db -> 2 Mb/s and so on.
- - Let us to easily change bitrates using controller buttons, same way we can change exposure values
I hope it helps
Raul
Raul,@volate!lo,
I read carefully what you said about bitrate. I was surprised becouse I was using bitrate AUTO from months. I performed some test I want to share with you:
AUTO BITRATE REPORT
From the web When applied to Tello It means higher bitrates gives us better image resolution at the expense of less fluidity/less smoothnes/more dropped frames.
I didn't know video bitrate can be measured by software tools. This task can be achieved by free tools like BitRate Viewer or VLC Media Player. As I have recorded hundreds of videos in AUTO bitrate I performed a deep study:
I discover all of my TelloFPV AUTO bitrate videos follows same pattern. Video starts at 4 Mb/s high bitrate and continues with that value until drone moves away and signal gets worse, that moment bitrate decreases until it reaches lowest value 1 Mb/s and it will not rise to high values anymore, no matter signal increases. See this sample:
View attachment 3003
It means AUTO bitrate WORKS but it does not work well, becouse bitrate should increase at the end of flight when returning home and video link signal improves.
I continued testing. I try an old @bluejune aTelloPilot video. I was shocked discovering AUTO bitrate WORKS PERFECT.
View attachment 3004
Notice high bitrates at the start of flight, bitrate decreases as Tello moves away and bitrate increasing again at the end of flight. I reviewed this old aTelloPilot videos and could verify that's the way it works. Perfect image at start and the end of video.
CONCLUSION
Many times you don't know what type of flight you are going a fly. We need high bitrates for close flights and lower bitrates for distant moments. BITRATE CAN'T BE STATIC. I propose you this ideas:
- - Try to make native AUTO bitrate works right. It seems than BlueJune got it
- - Create your own AUTO bitrate. It means, bitrate will dynamically changes depending of RSSI signal. For example 90db -> 4 Mb/s, 70db -> 3 Mb/s, 40db -> 2 Mb/s and so on.
- - Let us to easily change bitrates using controller buttons, same way we can change exposure values
I hope it helps
Raul
thanks for the detailed investigation.Do you happen to have a similar analysis for the stock app? Because that would indicate if aTelloPilot has really figured out to use the firmware's auto bitrate, or if it's doing its own bitrate adjustment.
I will dig into this as well in a few days, after fixing the remaining bugs, Translations, and maybe even fixing the Controller mapping.
My ideal approach would be #1, if that doesn't work I'd check out #2.
I also like #3, but thats independent of #1 and #2
brick72
Well-known member
Tried Today again fpv. Auto Record by Take Off dont Work on both my Phones. Switched on/off, before, after... Its Simply not Working. Do I something wrong, missed I something?
brick72
Well-known member
Naturally I was in Video Mode (as always ?).
I didnt close the App during the Test. Sa I said, switch Button on or off, no Record by take off.
So the only way is manually Start Recording.
raulvolador
Well-known member
@volate!lo,
I'm happy to help you. You are doing a great job. I hope you do not get tired
No luck with stock Tello app bitrates. It seems Tello programmers reencode video to fixed 10 Mb/s bitrate.
Using search forum tool I noticed It was commented by @bluejune some time ago here:
another Tello Pilot (Android App)
That one is cool maybe take off the prop guerds...Here is the background without a nickname.
I forgot that these Tello files are reencoded. Stupid me. To find the real bitrate i have to look into the data stream.
This is how it would look like:
I agree a shot without prop guards would have more sex appeal.
I am sorry but I can't use these backgrounds. They look nice but they are based on copyrighted material. At least the second one is clearly a modified Ryze Robotics photo.
Last edited:
I understand you and you're absolutely right I'm sorry!
If you like the first one, this is a simple photo of the cello ...
Otherwise the beach is as beautiful as at the beginning.
there are no problems!
this is one of the many images all the same, that you find on the internet ... it's a standard image.
just because I found it without a background ...
really, sr there are problems we leave everything as before, for me it is the same.?
OK, thanks. I can't use a photo of unknown source. I know everybody does but I'm German you know
...Finally got DU recorder working right!
For your viewing pleasure or laughter. Critiques & suggestions are welcome.
Please note!:
I believe the yaw rate issue is a fault with the Tello, not the app!
The other small bugs are known issues that Volate!lo is addressing. (note: when starting 360AP the EIS did not engage)
The video interference is caused mostly by the Bluetooth Gamesir T1d controller as shown in the video.
For your viewing pleasure or laughter. Critiques & suggestions are welcome.
Please note!:
I believe the yaw rate issue is a fault with the Tello, not the app!
The other small bugs are known issues that Volate!lo is addressing. (note: when starting 360AP the EIS did not engage)
The video interference is caused mostly by the Bluetooth Gamesir T1d controller as shown in the video.
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