![is this a virus? someone sent me this 47mb mp4 file that is only 30 seconds and that is only accessible if you download it. I sent the same file in a is this a virus? someone sent me this 47mb mp4 file that is only 30 seconds and that is only accessible if you download it. I sent the same file in a](https://preview.redd.it/r3cz66pnp4981.png?auto=webp&s=4953cf9737c8d5e5badc70484d86f9df7715fb63)
is this a virus? someone sent me this 47mb mp4 file that is only 30 seconds and that is only accessible if you download it. I sent the same file in a
How does a .mp4 file lose its codec and become unplayable? Is there some simple way to prevent this from happening? - Quora
![A multiplexed, paired-pooled droplet digital PCR assay for detection of SARS-CoV-2 in saliva | Scientific Reports A multiplexed, paired-pooled droplet digital PCR assay for detection of SARS-CoV-2 in saliva | Scientific Reports](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41598-023-29858-5/MediaObjects/41598_2023_29858_Fig1_HTML.png)