DVCPRO HD to bluray 720p24 x264 (in lavf) settings.

[rallymax]

Hi all,
I'm trying to render a DVCPRO HD source footage using x264 to bluray compatible 720p24 (23.976 really).
My problem is that I have the pixel aspect ratio all wrong and can't work out what it needs to be

Here is the MediaInfo of the DVCPRO HD footage

General
Complete name                    : xxxx.mov
Format                           : MPEG-4
Format_Commercial_IfAny          : DVCPRO HD
Format profile                   : QuickTime
Codec ID                         : qt  
File size                        : 8.03 GiB
Duration                         : 24mn 10s
Overall bit rate                 : 47.6 Mbps
Encoded date                     : UTC 2011-01-25 06:35:53
Tagged date                      : UTC 2011-01-27 04:11:46
Writing library                  : Apple QuickTime
Media/UUID                       : E92ED4A8-3767-4D90-A351-171172394D36
Video
ID                               : 1
Format                           : DV
Format_Commercial_IfAny          : DVCPRO HD
Codec ID                         : dvhp
Duration                         : 24mn 10s
Bit rate mode                    : Variable
Bit rate                         : 46.0 Mbps
Maximum bit rate                 : 97.7 Mbps
Width                            : 936 pixels
Original width                   : 960 pixels
Height                           : 702 pixels
Original height                  : 720 pixels
Display aspect ratio             : 16:9
Frame rate mode                  : Constant
Frame rate                       : 23.976 fps
Original frame rate              : 29.970 fps
Standard                         : NTSC
Color space                      : YUV
Chroma subsampling               : 4:2:2
Bit depth                        : 10 bits
Scan type                        : Progressive
Compression mode                 : Lossy
Bits/(Pixel*Frame)               : 2.922
Stream size                      : 7.77 GiB (97%)
Language                         : English
Encoded date                     : UTC 2011-01-25 06:35:53
Tagged date                      : UTC 2011-01-25 06:50:03
Audio
ID                               : 2
Format                           : PCM
Format settings, Endianness      : Little
Format settings, Sign            : Signed
Codec ID                         : sowt
Duration                         : 24mn 10s
Bit rate mode                    : Constant
Bit rate                         : 1 536 Kbps
Channel(s)                       : 2 channels
Sampling rate                    : 48.0 KHz
Bit depth                        : 16 bits
Stream size                      : 266 MiB (3%)
Language                         : English
Encoded date                     : UTC 2011-01-25 06:35:53
Tagged date                      : UTC 2011-01-25 06:50:03
Menu
ID                               : 3
Language                         : English
Encoded date                     : UTC 2011-01-25 06:50:03
Tagged date                      : UTC 2011-01-25 06:50:03

Here's the command line I used on x264 hoping to get 720p23.976

x264 --bitrate 20000 --preset veryslow --tune film --weightp 0 --bframes 3 --nal-hrd vbr --vbv-maxrate 40000 --vbv-bufsize 30000 --level 4.1 --keyint 30 --b-pyramid strict --slices 4 --fake-interlaced --pic-struct --aud --colorprim bt709 --transfer bt709 --colormatrix bt709 --sar 1:1 --force-cfr --pass 1 --vf resize:1280,720 xxxx.mov -o out.264
 
lavf [info]: 960x720i 0:1 @ 60000/1001 fps (cfr)
resize [info]: resizing to 1280x720
resize [warning]: converting from yuv422p to yuv420p
x264 [warning]: input appears to be interlaced, enabling bff interlaced mode.
                If you want otherwise, use --no-interlaced or --tff
x264 [info]: using SAR=3/4
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
x264 [info]: profile Main, level 4.1
x264 [info]: final ratefactor: 10.09
aborted at input frame 51, output frame 0

First off, is my "resize" correct?

Second, I think the problem is the SAR. What should it be? (I tried 1:1, 4:3, 16:9) and the first comes out narrow and the later two very very wide in Windows Media Player.

Third, should I have "--tff" ( i get that as a warning )?

Fourth, is my output frame rate going to be correct?

thanks for the help
rallymax.

[poisondeathray]

If you've resized to 1280x720 , then sar should be 1:1

Native 720p DVCProHD is 960x720 , so the sar would be 4:3, because 16/9 = 960x720 x 4/3 . But that isn't compatible with blu-ray , so you should be resizing to 1280x720 with square pixels

The problem is it's detecting it as interlaced 60i . This isn't going to work for you. You could try specifying different demuxer like ffms vs. lavc, but it will probably still "see" it as interlaced 60i

If it's 23.976 footage as your title suggests, you're going to have to IVTC somewhere, e.g. use avisynth ; I don't think any of the x264 filtering patches have IVTC built in