Analog vs Digital FPV Video

So the other day I was wondering if I could test analog vs. digital on the same platform (RC car). DJI goggles influence the analog reception a bit - but it worked.
Quick and easy solution was to strap on a little DJI FPV copter on my RCCar and drive around carefully with both video signals recording.
Both set to 25mw with same antennas.

Here I try to compare analog vs. Digital, on a car (low to the ground is always a challenge for RF). With a car you can drive beyound video range without crashing!
That being said, even with lowest power (25mw) the DJI FPV feed didnt break up completley when I drove down in the garage, behind LOS with lots of metal objects.
See the DJI OSD data (Bitrate and Signal) and how ImmersionRC 25mw VTX combined with Immersions Rapidfire compares to this…

TIPP: If you like the DJI OSD overlay in my video: download this script which will "re-format" the subtitle file. For nicer playback and only displaying of important infos. I have a few different versions of this re-formatter...
To simply playback the DJI files with OSD on your computer use "VideoLan Client" Player (free software) - it will display the SRT (subtitles) in realtime.
If you want to use this in a video editor - it's a bit more work. If there is enough demand I will make a little tutorial... (Hint: you need the free X-Media Recode)

Furadi show's how he can fly a spot with DJI which was almost impossible with analog (due to heavy multipathing there):


MrSteele's Analog vs Digital Video:


Frequncies table - nice overview:

EmaxPro Vista, feelgood FPV Sessions

This copter/setup is really a great, fun device! I only had it for a few weeks now and already have more than 50 flights. Most flights are quite long as well (6-8mins). Power is plenty, copter could be tuned a bit better.
DVR quality is ok for me. Of course a gopro would make supersharp and steady footage - but this gives you a dirty, action / fun look for your FPV videos. There are more then enough high quality footage aerial videos out there now - let's come back to the basics and concentrate on the fun part of this hobby!

Filmed with: Samsung Galaxy S10
Emax Pro + Caddx Vista (with ND8 filter)
DVR footage is 1280x720 (originally 960x720, streched with NIEK)
Video project was 2560x1440x60 - massive upscale - but this makes youtube spend more bitrate. Plus: the now unsharp DVR footage doesnt need as much bitrate as Youtube would supply for 1440p - result: no more is Youtube codec the bottlenec ;)

SUPERVIEW with NIEK Script - the SUPER EASY way:
(works for Windows):
1.) download this NIEK SUPERVIEW Script
and extract all 3 *.EXE files into your SYSTEM32 folder
(i.E. c:\windows\system32)
(if this scares you - it also works to have this *.exe files in the same folder as your videos - they just have to be available for the BAT script...)
2.) copy the "Superview all.bat" File to the folder where you have your 4:3 source Videos
3.) run this file and either enter a single videos filename when asked - or easier, just hit ENTER to have all MP4 files from this folder converted automatically into a "superview" subfolder.
On a current CPU it takes around twice the runtime of your source-video (10mins for a 5min flight video).

EMAX Pro Review

If you just wanna see some flight scenes (nice ones in there!) check the index below, around 12:56 is where the nicer flying starts.
●▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬●
00:03 Unboxing 01:21 closeups 02:46 Crossfire connection! 03:08 first flights (analog) 04:33 Caddx Vista install 04:46 first flight with DIGI 04:59 Analog vs Digital indoors 05:37 VoltSag test results 09:22 Taranis Telemetry 11:47 ND Filter and DJI transmission 12:56 flight footage AWESOME fields
●▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬●

Emax Pro Specs:
6S copter
Weight: 290gr with original analog setup / 306gr with caddx vista
Flighttime: 6-8mins with 1300mah 6S
very good handling and speed, great for freestyle, apperantly designed for racing
see Furadi's EMAX Pro review (more racer point of view)

ND Filters:
Install such a "grey filter" which basically reduces the ammount of light. This helps in multiple ways:
- jello (vibration wobble) reduced or eliminated!
- motion blur effect (for example in gras when flying low and fast) - looks better
- and this reduces the BITRATE needed - so other parts of the video can be sharper
- some protection to your lens

https://www.freewellgear.com/dji-mavic-accessories/109-dji-mavic-filter-6-pack.html
(you need to "widen" the caddx lens with some tape, for those ND filters to fit there)

►EQUIPMENT
Filmed with: Panasonic GH5 + R0de VideoMicro, Samsung Galaxy S10, Caddx Vista

Battery VOLT-Sag-TEST (retesting CNHLs Black Series)

In my big Battery Test-Video in early April I've compared a lot of different China brand 6S Lipos.

Since a few comments suggested that the CNHL (at least the white ones) usually perform very good, I thought that the long shipping times (and maybe bad, cold storage during shipping) might have damaged them. I asked banggood to send another one - so I could retest:

Today I just flew 3 packs with a new copter (soon to be reviewed!) and found that the CNHL black series still sucks :)

(click to enlarge)

Above you see my excel log analysis. Both CNHLs performed similar (bad) where they sag to 19.7 and 19.6v, where the DemonRC only did sag to 20.5v  (and the DemonRC was NOT the best performer in my test - it is a good medium class pack). Notably more "punch" as well on the DemonRC pack - seen as the higher orange peak (59Amps vs. 53 and 55 on the CNHLs).

(click to enlarge)

Above you now see a zoomed in comparison of the voltages of those 3 packs. Red is DemonRC, Blue and orange are CNHLs. Again: Demons were not even the best - so this comparison could look even worse for CNHL!

A note to my testing this time:  SD Logging on Taranis!

After a good tip from "InDrone Productions" I realized that I can log the values thru telemetry downlink on my Taranis. As always, Oscar Liang has a great guide how to activate this (rather simple!). The only thing you need: Crossfire RX needs to be connected in CRSF protocal (with 2 signal wires) instead of sbus mode (which I had). If this is the case, you see all important values on your Radio (and can even set alarms there).

Let me know if you need a video on this topic...