SnapMotion file diagnosis


I have hours of MP4 security camera footage that I want to extract for timelapse. Big Sur QuickTime can’t read it, so expectedly, SnapMotion can’t either. VLC and IINA and HandBrake all can. I was hoping the you’d see something in the VideoScan report as to why, so I can do the fastest and least invasive conversion into something SnapMotion and QuickTime can read.

Complete name : /Users/m1mini/PROJECTS/VIDEO/168/168 2021-03-02 to 03-13 motion videos/2021-03-02 00.08.58.mp4
Format : MPEG-PS
File size : 19.8 MiB
Duration : 58 s 920 ms
Overall bit rate mode : Variable
Overall bit rate : 2 812 kb/s
FileExtension_Invalid : mpeg mpg m2p vob vro pss evo

ID : 224 (0xE0)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5
Format settings : CABAC / 1 Ref Frames
Duration : 58 s 30 ms
Bit rate mode : Variable
Maximum bit rate : 4 352 kb/s
Width : 2 688 pixels
Height : 1 520 pixels
Display aspect ratio : 16:9
Frame rate : 20.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Color range : Full
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

ID : 192 (0xC0)
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Format version : Version 4
Muxing mode : ADTS
Codec ID : 2
Duration : 58 s 920 ms
Bit rate mode : Variable
Channel(s) : 1 channel
Channel layout : C
Sampling rate : 16.0 kHz
Frame rate : 15.625 FPS (1024 SPF)
Compression mode : Lossy
Delay relative to video : -31 s 820 ms


Hi there,

It seems that your file is encoded as a MPG file whereas your file extension is MP4. That is why VideoScan add the row FileExtension_Invalid : mpeg mpg m2p vob vro pss evo.

Can you try to rename your file 2021-03-02 00.08.58.mpg instead of 2021-03-02 00.08.58.mp4?

Let me know if it is working.


Closer. Good try. SnapMotion doesn’t complain now, but it only plays a black screen. VideoScan still has the identical FileExtension_Invalid row. Tried .MPEG, too.


I am sorry for the delay. I did not see the notification of the reply. You can send me an email with a non-working video. I will check the problem.


No idea what changed, but it’s working now, in both programs. OS update, maybe Anyway, all good.