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Sendspark accepts .mp4 and .mov video files for upload. Formats such as .avi, .wmv, .3gp, .flv, .mkv, .mpeg, .mpg, .mts, .vob, and .m4v will not upload. If you need to use one of the unsupported formats, email us and we’ll see what we can do.

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Key takeaways

  • Only .mp4 and .mov files will upload to Sendspark.
  • Common formats that will not upload include .avi, .wmv, .3gp, .flv, .mkv, .mpeg, .mpg, .mts, .vob, and .m4v.
  • Need one of the unsupported formats? Make a request and the team will see what they can do.
  • Using a file format not listed here at all? Let the team know and they’ll test it for you.

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Video formats that WILL upload to Sendspark:

  • .mp4
  • .mov

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Video formats that will NOT upload to Sendspark:

  • .avi
  • .wmv
  • .3gp
  • .flv
  • .mkv
  • .mpeg
  • .mpg
  • .mts
  • .vob
  • .m4v
(If you need to upload one of these formats, make a request and we’ll see what we can do for you).

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Using another file format?

Let us know and we will test it for you!

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Frequently asked questions

Sendspark supports .mp4 and .mov files for upload.
No. Formats including .avi, .wmv, .3gp, .flv, .mkv, .mpeg, .mpg, .mts, .vob, and .m4v will not upload to Sendspark.
Email hello@sendspark.com with your request and the team will see what they can do for you.
Let the team know and they’ll test it for you.
Updated July 2026.