mp4 video failed on only Safari browse

[ebijun]

mp4 file can play on osf.io, But playing mp4 video failed on only Safari browser.

I've seen the issues. and the problem still remains the same?

• [SVCS-319] Fix video for Sarfari  #234
• [SVCS-319] Fix Range-header handling (enables MFR video support on Safari) #318
• 5a660f8

Safari needs "HTTP Range Request" on large file transfer. (RFC7233)
If the server can't reply HTTP Range Request,Safari can't read the requested file.

Request:
Range: bytes=0-1 
              ===============>
                                                        206 Partial Content returns,
                                                        and should return mp4 first 1byte,
                                                         but Waterbutler returns 2bytes and failed.
              <===============