YUV Not Listing in Metadata Dump

Started by canjmp, December 05, 2022, 02:03:25 PM

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canjmp

Using the recommended script to dump all metadata:

exiftool -a -u -g1 -ee -api RequestAll=3 360_00HD.mp4 >> Metadata_from_Exiftool.txt

I was not able to get:

Color space                    : YUV
Chroma subsampling             : 4:2:0

Which was gotten from the video player print properties feature.

I attach the two text files showing the metadata.

Phil Harvey

Where is this information stored in the MP4?

- Phil
...where DIR is the name of a directory/folder containing the images.  On Mac/Linux/PowerShell, use single quotes (') instead of double quotes (") around arguments containing a dollar sign ($).

canjmp

Phil,
Sorry what I sent as TXT attachements is all I know. My knowledge of Exif file structure is zero.

James

Phil Harvey

Hi James,

All I can say is that ExifTool should be extracting all available metadata, but does not decode the video stream.  My guess is that this information may be in the video.

- Phil
...where DIR is the name of a directory/folder containing the images.  On Mac/Linux/PowerShell, use single quotes (') instead of double quotes (") around arguments containing a dollar sign ($).

canjmp

Hi Phil,
You are wise, yes the YUV data is in the video pipeline according to Wikapedia.

I was able to read it as follows:

REM   Probe video pipeline to read YUV
ffprobe -show_streams -i 360_00HD.mp4 >> out_video_pipeleine.txt


Much thanks for your help.