C100: Banding and the encoder test (AvidMC vs SorensonSqueeze export)

[Pave1]

I found a big differences in the way of export files from the C100 to internet.
I used Avid Symphony and three ways to export files (the first image is the original):

The original file was transcoded from AVCHD to XDCAM EX HQ 35Mbps 420, file was color corected and then rendered to 185Mbps (and exported as tiff direct from timeline)

1/ I export the files using Sorenson Squeeeze encoder (I used QT REF and DNxHD185 mixdown).
2/ I export the files direct from timeline with Avid QT H264 encoder.
3/ I export the files direct from timeline to HDV.

Because jpeg versions of images are not convenient in this case, I sent tiff versions here:

http://www.videoproduce.cz/images/A_01_Canon_C100_banding_test_original.tif
http://www.videoproduce.cz/images/A_02_Canon_C100_banding_test_SorensonSqueeze_H264.tif
http://www.videoproduce.cz/images/A_03_Canon_C100_banding_test_AvidQT_H264.tif
http://www.videoproduce.cz/images/A_04_Canon_C100_banding_test_Avid_HDV.tif


The differences in results are really visible.

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The second part of this test showed differences at exported levels and colors between
Sorenson encoder and Avid QT encoder:

http://www.videoproduce.cz/images/A_05_C100_avid_symphony_original.tif
http://www.videoproduce.cz/images/A_06_C100_expost_H264_sorenon_squeeze.tif
http://www.videoproduce.cz/images/A_07_C100_expost_H264_Avid_QT_direct_from_timeline.tif

 

[Pave1]

An original QT version with banding in 1:16 (it is the enconder issue) and with levels changes is here:
https://vimeo.com/62569403

A new HDV version without banding in 1:16 you can download here (1.06GB):
http://www.videoproduce.cz/images/Prague_views_C100_2013v2_25p.m2t

A new Sorenson H264 version with right levels you can download here (594MB):
http://www.videoproduce.cz/images/Prague_views_C100_2013v2_Sorenson_slow_x264.mp4