recover_mp4 v1.92 (C) 2011-2017 Dmitry Vasilyev <slydiman@mail.ru>
http://slydiman.me

This utility can recover video and audio streams from unfinalized MP4/MOV/3GP files without (or empty) header. 
You may got the unfinalized file in case of damaging camcorder during recording or such. 

Supported video formats: AVC/H.264, HEVC/H.265

Supported audio formats: AAC, ADPCM (Intel), MP3, PCM (LE, BE, float), RAW

Usage:
  recover_mp4 in_good_similar.mp4 --analyze
  recover_mp4 in_corrupted.mp4 {out_video.h264 | out_video.hevc | --novideo}
    {out_audio.aac | out_audio.wav | out_audio.mp3 | out_audio.raw | --noaudio} [options]

Options:
  --start <hex>     read from position (ignore mdat atom)
  --end <hex>       end position (ignore mdat atom). Specify 0 for EOF
  --avcidrmax <hex> ignore AVC NAL units (IDR) with the size above than <hex> bytes
  --avcxmax <hex>   ignore AVC NAL units (non IDR) with the size above than <hex> bytes
  --aaclong
  --aacmin <hex>  
  --pcmmin <hex>  
  --pcmfix <hex>  
  --verbose  

  --gopro4        use Ambarella templates and detect GoPro4 specific data (default for MP4 files)
  --ambarella     use Ambarella templates (ignore GoPro4 specific data)
  --lav           use Lav/ffmpeg templates
  --mainconcept   use Mainconcept templates
  --novatek       use car DVR templates based on Novatek (DV turnkey, Street Guardian, etc.)
  --qt            use QuickTime templates (default for MOV files)
  --iphone4       use iPhone4 templates
  --eos           use Canon EOS 5D Mark II, 7D, 550D templates
  --eos3          use Canon EOS 5D Mark III, 7D Mark II, 100D templates
  --eos4          use Canon EOS 5D Mark IV templates
  --canon         use Canon SX, EOS 80D templates
  --vmix          use vMix templates
  --wowza         use Wowza templates
  --blackmagic    use BlackMagic templates
  --avermedia     use AVerMedia Live Gamer Portable C875 templates
  --lumia         use Lumia templates
  --panasonic     use Panasonic DMC-G7, DMC-GX80, DMC-G85, DMC-GH4, DC-GH5, HC-X1000 templates
  --sony          use SONY A7S [Mark II], AX1E, NX5R, A6000, HDR-CX405, HDR-CX625 templates
  --drim          use DRIMeIII templates (Samsung NX1000 camcorder)
  --drim5         use DRIMeV HEVC/H.265 templates (Samsung NX1/NX500 camcorder)
  --tomtom        use TomTom Bandit Action Camera templates
  --icat          use iCatch templates
  --cgo3          use cgo3 templates
  --dji.avc       use DJI.AVC Phantom (H.264) templates
  --dji.hvc       use DJI.HVC Phantom (H.265) templates
  --hevc          use generic HEVC/H.265 templates
  --ext           use generic templates for any other camcorder or smartphone, Open Broadcaster Software, etc.

Step 1: Use any good previous file with the same resolution and bitrate to generate the header files, for example

>recover_mp4.exe good.mp4 --analyze

It will create files 'video.hdr' and 'audio.hdr' in the current directory and print instructions (ffmpeg options, etc.).

Step 2: Recover streams from the corrupted file, for example

>recover_mp4.exe bad.mp4 recovered.h264 recovered.aac

Note: Files 'video.hdr' and 'audio.hdr' must be exist.
Probably you need to add a specific option (look at instructions from step 1).

Step 3: Use any other utility (Yamb or ffmpeg for example) 
to recreate the MP4/MOV file from the streams (recovered.h264 and recovered.aac). 

>ffmpeg.exe -r 30 -i recovered.h264 -i recovered.aac -bsf:a aac_adtstoasc -c:v copy -c:a copy recovered.mp4

Note MP4 does not support PCM sound, you must create MOV in this case:

>ffmpeg.exe -r 30 -i recovered.h264 -i recovered.wav -c:v copy -c:a copy recovered.mov

In case of ADPCM audio:

>ffmpeg -r 30 -i recovered.h264 -i recovered.wav -c:v copy -c:a adpcm_ima_wav recovered.mov

Note: 30 is FPS in these examples. Specify your correct value.
In case of 29.97 I suggest to specify 30000/1001 instead.