HD compression query please help

[Craig Seeman]

Yet it’s fluid to me. I see no dropped frames.

I was all over Vimeo back when that was the norm and found they were taking 29.97 material an transcoding to 24fps by dropping frames. They claimed that most people couldn’t decode 29.97 so they had poor viewing experience. My response was that their horrible frame rate conversion ensured a poor viewing experience.

I am seeing smooth 30fps (or 29.97fps) playback with no motion issues. I suspect what’s being viewed by those outside of the USA is not the same as what I see for reasons I obviously don’t know. If the file you downloaded looks different then what I see then “something” is up. I see smooth playback and temporal resolution is one of my biggest peeves especially with Vimeo and I had been quite demonstrative there. I do not see that issue in this case as I observe the file.

[Craig Seeman]

The encode that I see today is DEFINITELY NOT what I saw yesterday. It seems every 4th or 5th frame is duplicated. It looks like a bad 23.98 to 30fps conversion.

Back when they went from 24 to 30 to 24 they did re-encodes. One day my 29.97 material looked good and then it would look bad. I had found out that after experimenting with 30fps and deciding that “people couldn’t decode it” they re-encoded it back to 24fps.

While this file looks to be 30fps, it looks as if the source were either 23.98 or 25 with frames duplicated to playback at 30fps. This is not what I saw yesterday.

[Craig Seeman]

Please read these two threads on Vimeo.

https://vimeo.com/forums/topic:21784
Vimeo is doing re-encodes apparently. What I saw yesterday is not what you saw and not what I’m seeing today.

https://vimeo.com/forums/topic:18488
See recent posts lower down.
Note the posts from Staff that they say they see smooth video while viewer does not. In fact the whole 2nd half of the thread seems to involve issues there one day, gone the next, and in some cases Vimeo re-encoding to fix issues.