Re: Is there a way to read shutter speed, aperture & ISO in mp4 metadata?: Digital Video Talk Forum: Digital Photography Review
![video - What is the limit for how many characters of metadata can be saved in the comments metadata of an MP4 file? - Super User video - What is the limit for how many characters of metadata can be saved in the comments metadata of an MP4 file? - Super User](https://i.stack.imgur.com/DbRlA.png)
video - What is the limit for how many characters of metadata can be saved in the comments metadata of an MP4 file? - Super User
![Balaji on Twitter: "References 1) File formats for mp3, mp4, png etc have space for metadata that can be used for a digital signature. https://t.co/pdjywY42XI 2) gpg gives a sample command line Balaji on Twitter: "References 1) File formats for mp3, mp4, png etc have space for metadata that can be used for a digital signature. https://t.co/pdjywY42XI 2) gpg gives a sample command line](https://pbs.twimg.com/media/FeiTO24VEAAAYa0.jpg)