h.264 export - bad quality

Community Beginner ,
Jun 13, 2017 Jun 13, 2017

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Hello,

I have been working on some beauty retouching in after effects, using dynamic link from Premiere Pro

Resolution 720p, frame-rate 29.97fps

Two clips, in my sequence, when rendered from premiere pro or media encoder in h.264 codec with Vimeo 720p HD preset come out looking horrible and I can't figure out why.  One clip has had significant grain added in after effects, so it kind of makes sense to me that h.264 codec is struggling to contain all that detail.  However, the second clip with problems is almost identical to other clips in the sequence which render fine - all I have done to these clips is motion tracking via a null for a masked clean-plate retouching workflow, and some other tracked masks for dodging and burning details.

The clips look gorgeous previewed in after effects and premiere pro, but on export it looks like someone has dialled in incredibly high compression - the kind of quality you'd see on youtube many years ago.

I tried different rendering engines (cuda, openCL, CPU) - no change

I tried increasing the bit rate to 20 on h.264 export - no change

I tried exporting uncompressed files from After Effects and putting them on the Premiere Pro Timeline, thinking it may be a dynamic link problem - no change

I tried stupid things like modify>interpret>(different interlacing options, manually ensuring that square pixels were chosen) - no change

I checked that the composition resolution in After Effects was set to the same as in Premiere Pro - no change

I tried drop-frame and non-drop in After Effects, just in case - no change

Strangely I imported one sequence into another sequence so I could rotate it 90º for an instagram story at 1080x1920 and that had less apparent distortion at the same h.264 export settings, although when I reduced the bit rate to less than 5 it completely broke down in the same two clips I was having trouble with.

I found a strange work-around to produce a slightly, and I stress - only slightly, better quality h.264 file for distribution - I exported the sequence as ProRes 422, uploaded to vimeo and downloaded vimeo's full resolution compressed version.  That is to say, that in this scenario, Vimeo's server based compression trumped premiere pro/media encoder.  I think this is unacceptable - especially given that Adobe is about to price hike all of us.

What is going on?  On my internet travels trying to solve the problem I came across an article from 2014 that demonstrated FCPX doing significantly better h.264 exports than premiere pro or media encoder.

Screenshots of one clip previewed in premiere and the output h.264 file below.

Screenshot - previewing in Premiere Pro in full screen on MBP 15inch Retina

Screen Shot 2017-06-13 at 3.02.18 PM.png

Screenshot - playing back Vimeo Quality H.264 file in full screen on MBP 15inch Retina

Screen Shot 2017-06-13 at 3.03.02 PM.png

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Community Beginner ,
May 06, 2021 May 06, 2021

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I have the same problem... Did u find a solution? 

Asked the same question few minutes ago but it doen't give me a good feeling when I see 0 comments on your post :(( 

Thanks in advance mate 🙂 

 

Greets John 

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Adobe Community Professional ,
May 06, 2021 May 06, 2021

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You are posting to a thread from 2017.

If you want help post a new thread with all the info needed (machine specs. workflow, export settings, screenshots etc.)

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