Does changing file extension from .f4v to .flv have any negative effects?

[huntaaar]

Hi there

I am uploading videos to my new site www.aspirincreative.com and the player will not recognize any .f4v videos. I changed the extension on one to .flv and it now appears to recognize and play the video.


Am I creating problems I just don’t know about? I really need to be sure people can watch these ok.



Also, I didn’t build the site myself and the developer is not being too helpful in terms of video playback (which has been less than great so far) the player seems to be a rather strange resolution (600x340) which is not native 16:9 and wont recognize 4:3 encodes without stretching and warping.



I have tried to encode close to this in media encoder but as soon as I select .flv over .f4v in the options my ratios seem to go mad, not keeping the preset and not letting me set to anything that is actually 16:9?!


I’m really not a code / flash guy so I’m bumbling my way through this. Any help on any of the above would be most welcome.

Thanks

[Alex_ander]

I had such a video (mediainfo read .f4v and mentioned AVC/aac as streams). I wanted to decompress it but after changing extension to flv FlvExtractor refused to work with it saying it's not flv container (I was able to play it with that extension). Only after changing it .mp4 I managed to unpack the streams in YAMB and open video in DGAVCIndex. So the fact you can play it only means the player supports that file association + actual file type (it's not necessarily .flv).

[huntaaar]

Hi, thanks for the response (even if parts do shoot right over my head!).

All I really need to be sure of is if the video plays ok in the player then people who visit the site will be able to see it ok ) providing they have flash plugin etc)

Is this a safe assumption?

Thanks

[Alex_ander]

I'm not sure it will play everywhere like on your PC and I'd try to remux it to real mp4 or flv. In my case it actually was not flv.

[huntaaar]

I'm not sure it will play everywhere like on your PC and I'd try to remux it to real mp4 or flv. In my case it actually was not flv.

Ok thanks. Can I remux in Adobe Media Encoder or is not, is there any free software (mac based) that will do it?

Thanks for your help

[Alex_ander]

I meant YAMB for demuxing after renaming to .mp4 (if it's the same file type that I had), it can mux back into mp4 or mov. I never tried to create flv's.