FFmpeg ignores -aspect option when converting from .ts to .dv

[intracube]

I'm trying to convert a set of DVB-S (MPEG-2 SD) .ts files that have the aspect ratio incorrectly set to 4:3 to .dv files - and I can't force FFmpeg to encode the video as 16:9.

My command is as follows:
ffmpeg -i 08-09-20_-_CBS_1.ts -aspect 16:9 -target ntsc-dv test.dv

During encoding, the PAR and DAR reflect the '-aspect 16:9' option:
Output #0, dv, to 'test.dv':
Metadata:
encoder : Lavf52.84.0
Stream #0.0: Video: dvvideo, yuv411p, 720x480 [PAR 32:27 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
Stream #0.1: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s

But the converted video still has the aspect set to 4:3:

General
Complete name                    : test.dv
Format                           : DV
Format_Commercial_IfAny          : DVCPRO
File size                        : 19.8 MiB
Duration                         : 5s 772ms
Overall bit rate                 : 28.8 Mbps
Recorded date                    : 1970-01-01 00:00:00

Video
Format                           : DV
Format_Commercial_IfAny          : DVCPRO
Duration                         : 5s 772ms
Bit rate mode                    : Constant
Bit rate                         : 24.4 Mbps
Width                            : 720 pixels
Height                           : 480 pixels
Display aspect ratio             : 4:3
Frame rate mode                  : Constant
Frame rate                       : 29.970 fps
Standard                         : NTSC
Chroma subsampling               : 4:1:1
Bit depth                        : 8 bits
Scan type                        : Interlaced
Bits/(Pixel*Frame)               : 2.357
Stream size                      : 16.8 MiB (85%)

I'm using a recent version of FFmpeg (SVN-r25702).

If I encode to mpeg4 video in a .mp4 container, the '-aspect' option works as expected - so it seems to be a specific problem with encoding to DV.

Anyone have any ideas?

[intracube]

Update: I've also tried dropping the -target option and manually specifying the parameters.
ffmpeg -i 08-09-20_-_CBS_1.ts -vcodec dvvideo -acodec pcm_s16le -pix_fmt yuv411p -aspect 16:9 test_02.dv
No difference, although changing the -aspect value is reflected in the info on the command prompt.

Setting -aspect 4:3 gives:

Output #0, dv, to 'test_02.dv':
  Metadata:
    encoder         : Lavf52.84.0
    Stream #0.0: Video: dvvideo, yuv411p, 720x480 [PAR 8:9 DAR 4:3], q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
    Stream #0.1: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Press [q] to stop encoding

Setting -aspect 16:9 gives:

Output #0, dv, to 'test_02.dv':
  Metadata:
    encoder         : Lavf52.84.0
    Stream #0.0: Video: dvvideo, yuv411p, 720x480 [PAR 32:27 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
    Stream #0.1: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Press [q] to stop encoding

Also, I think the PAR values are wrong according to Rec.601 standard (which I believe DV follows). 4:3 NTSC should be 10:11, 16:9 should be 40:33.