Hi zawan_na,
Yes, you will need to look into how the video has been encoded it will work on YouTube because when you upload a mov to youtube it will encode it into mp4.
From another article.
YouTube uses 4 container formats and 4 different codecs. It depends on the popularity of the video what codecs are used for your video (see below why). Generally, every of your uploaded videos will be encoded in h.264 and will be muxed into an .flv and .mp4 container. That’s the standard and this will happen for every video. Though .flv will only be used for resolutions below 720p. Meaning only 360p and 480p will exist in an .flv container. Though every video below 720p will also have a mp4 version available. For 240p YouTube is also using 3gp which is a rather old codec (based on MPEG-4 Part 2 (not to be confused with MPEG4 Part 10 aka h.264) meant for mobile devices (long before the smartphone era), it comes in the container .3gpp.
If you go to your video in Youtube download manager and download the encoded mp4 and then upload it to S3Bubble it will play fine if it plays on Youtube.

Best Regards
Sam
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This reply was modified 7 years, 8 months ago by
s3bubble.
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This reply was modified 7 years, 8 months ago by
s3bubble.