Lyris
8th April 2011, 23:11
Just recently I was using x264 to convert some DigiBeta material to Blu-ray Disc (not for a commercial release, but for a one-off festival screening).
The disc plays fine in set top players and most Windows playback programs, but, using Arcsoft TotalMedia Theatre, you can observe a weird sort of diagonal 'wave' like pattern over the image. This behaviour has been confirmed on two different machines and doesn't happen with any store-bought BDs I've tried to play. The problem also disappears when I choose to enable Hardware Acceleration in the player.
It's quite hard to see in a still frame, but this is a pretty good example, with the 4 slices making up the image being apparent: http://img64.imageshack.us/img64/5669/avcissue.jpg
Sample clip: http://landofwhimsy.com/upload/femmetest.avc (72mb)
Encode settings:
x264 --bitrate 28500 --preset faster --tune film --fps 24000/1001 --force-cfr
--weightp 1 --bframes 3 --nal-hrd vbr --vbv-maxrate 38000 --vbv-bufsize 30000
--level 4.1 --keyint 24 --b-pyramid strict --slices 4 --aud --colorprim "bt709"
--transfer "bt709" --colormatrix "bt709" --sar 1:1 -o G:\avc\test.avc D:\Digibeta\in.avs
Encoded with x264 core 114 r1924 08d04a4
Can anyone else replicate this? Should we be concerned or is the issue on the player side? I have seen the same issue (albeit in a much more mild manifestation) with VLC Media Player when its hardware acceleration is turned off.
The disc plays fine in set top players and most Windows playback programs, but, using Arcsoft TotalMedia Theatre, you can observe a weird sort of diagonal 'wave' like pattern over the image. This behaviour has been confirmed on two different machines and doesn't happen with any store-bought BDs I've tried to play. The problem also disappears when I choose to enable Hardware Acceleration in the player.
It's quite hard to see in a still frame, but this is a pretty good example, with the 4 slices making up the image being apparent: http://img64.imageshack.us/img64/5669/avcissue.jpg
Sample clip: http://landofwhimsy.com/upload/femmetest.avc (72mb)
Encode settings:
x264 --bitrate 28500 --preset faster --tune film --fps 24000/1001 --force-cfr
--weightp 1 --bframes 3 --nal-hrd vbr --vbv-maxrate 38000 --vbv-bufsize 30000
--level 4.1 --keyint 24 --b-pyramid strict --slices 4 --aud --colorprim "bt709"
--transfer "bt709" --colormatrix "bt709" --sar 1:1 -o G:\avc\test.avc D:\Digibeta\in.avs
Encoded with x264 core 114 r1924 08d04a4
Can anyone else replicate this? Should we be concerned or is the issue on the player side? I have seen the same issue (albeit in a much more mild manifestation) with VLC Media Player when its hardware acceleration is turned off.