- January 20, 2009 at 3:48 am
Love the ability to post video . . . but . . .
I posted this below
The source file is H.264 .mov 960×600 2.3MB at 20 some seconds duration.
While the frame size is certainly big but total file size is small. It buffers much more slowly that a 2.3MB file should.
I notice a preference while posting for .flv files. I was wondering why on that too depending . . .
These days Flash supports H.264 and is, according to Adobe, extension agnostic. I’ve seen listed .mov, .mp4 as well as .f4v among acceptable extensions as long as it’s H.264 “on the inside.”
I’m wondering if COW’s re-encoding the H.264 .MOV and in the process making the file much larger, hence the slow buffering?
- January 20, 2009 at 5:44 am
Appreciate the feedback. The video upload section of the site is still a rather young section of the COW and will continue to advance in the days ahead. We’ve implemented the ability for flash to playback the H.264 codec in other areas of the COW and I’m sure we’ll do so as well in that area in the near future.
- January 24, 2009 at 5:25 pm
After doing some research:
The file I uploaded was 2.4MB, 960×600, 800kbps, H.264 .mov, 24 seconds
The file online seems to be 900×564, FLV1 (Sorenson Spark) 15MB.
That would mean the 800kbps file is now about 3000kbps give or take.
No wonder the SLOW download!!!
What’s happening, Why the HUGE upsize?
Is there any way to avoid this?
I can certainly encode to Spark, On2VP6, H.264 (which is what I did) if that helps to avoid the upsize.
I would think you’d want to avoid such upsize given that it means very small uploads will result in very huge upsize and horribly inefficient use of your server space and bandwidth.
Any thoughts on this?
- January 25, 2009 at 2:43 pm
Thanks. Can I replace the file I previously uploaded with the same name so the code in my previous links to stay active?
New upload does play smooth as silk though. Thanks.
- December 3, 2009 at 7:30 pm
Is this problem solved?
I uploaded some files .MP4 (h264 – aac audio) and did ask NOT to re-encode. I got the files as .flv and playing stuttering, because the bitrate is too high…
I suspect that the option buttons on the 1st upload screen are inverted.
To be sure I am doing a test: uploading twice the same mp4-file once asking to re-encode and twice asking NOT to re-encode. I am waiting to see the results. I’ll report back.
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