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pixellation

Community Beginner ,
Aug 29, 2020

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I have some footage that I shot with a GoPro8, it's good quality as far a GoPro can go if I watch it before editing. After exporting (60 fps, 16Mbps target bitrate, H.264 encoding, 4K resolution) I can see pixellation, as in the light sky of attached picture. I have tried increasing the target bitrate, but to no avail. What's the cause and how can I solve the problem?

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pixellation

Community Beginner ,
Aug 29, 2020

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I have some footage that I shot with a GoPro8, it's good quality as far a GoPro can go if I watch it before editing. After exporting (60 fps, 16Mbps target bitrate, H.264 encoding, 4K resolution) I can see pixellation, as in the light sky of attached picture. I have tried increasing the target bitrate, but to no avail. What's the cause and how can I solve the problem?

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Error or problem, Export, How to

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75

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Adobe Community Professional ,
Aug 29, 2020

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embed.jpg

...so we dont have to download unknown files: we help you, you help us. Thanks! 

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Adobe Community Professional ,
Aug 29, 2020

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it's good quality as far a GoPro can go

That is your answer.

Not just the sky but the entire pictuer does not look that great.

Please upload original clip for testing.

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Community Beginner ,
Aug 29, 2020

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I'll share the Google Drive files because YouTube would modify them further.

Original GoPro footage

Export Premiere Pro

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Adobe Community Professional ,
Aug 29, 2020

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Its not 4K but 1080p.

change your sequence setting to 1080p

Also original is 50p export is 60p. Might want to correct that.

Please post export settings.

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Community Beginner ,
Aug 29, 2020

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Sequence settings are:
1920 x 1080
00;44;47;09, 100,00 fps
48000 Hz - Stereo

I created the sequence by dragging one clip onto the timeline, it happens to have been 100 fps.

 

Export settings are as follows:

1920 * 1080 (1,0) - 60 fps

Progressive VBR 2 pass

Target 16 Mbps, Max 40 Mbps

AAC, 320 kbps, 48 kHz, Stereo

 

The footage was shot in 50 and 100 fps.

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Adobe Community Professional ,
Aug 29, 2020

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I gather the 100 fps clip is for slomo.

I would go for a 50p sequence and export to 50p.

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Community Beginner ,
Aug 30, 2020

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Do you think this is the reason why the pixellation became more evident after exporting?

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Adobe Community Professional ,
Aug 30, 2020

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You need to do some testing yourself.

If I follow my own advice I see no pixalation although the original footage does not have great image quality.

If you have Protune or what ever turned on in the GoPro turn that off.

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Adobe Community Professional ,
Aug 30, 2020

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Do you think this is the reason why the pixellation became more evident after exporting?

 

That´s not the main reason but mis-matching those settings will give other quality problems. The main reason is too low bit rate combined with the not-so-great H264 encoder that are shipped with Premiere Pro. It can be great sometimes but fails big time in videos like this with water and lot´s of fine details such as lot´s of reed straws that moves. The original footage has a bit rate of approx 40 Mbps, so try to encode with a bitrate closer to that. 16 Mbps as target won´t cut for this kind of footage.

 

I get great results when i use TMPGEnc Movie Plug-in AVC for Premiere Pro. Download a trial and test for 14 days without any restrictions or watermarks.

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Adobe Community Professional ,
Aug 30, 2020

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That plugin looks useful ... hmmm.

 

Neil

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