[FFmpeg-user] Capture from USB Dazzle: Interlaced or not interlaced. FFV1 level3 vs h264

[MrNice]

On 02/11/15 10:26, MrNice wrote:
> 
> I had a closer look on what I did previously.
> With FFV1, option -flags +ilme+ildct do nothing. Debug see it but do nothing
> => I'll remove it
> Moreover, documentation says:
> Apply interlaced motion estimation, Use interlaced DCT (MPEG-2 and
> MPEG-4 only)
> 
> With x264, debug returns a warning:
> interlace + weightp is not implemented
> 
> This option is not in the CL.
> When I remove +ildct, the warning disappears.
> 
> => I'd guess +ildct is useless, I'll remove it
> 
> Let me know what you think
> Many thanks
> 
> _______________________________________________

However with x264 encoder and -flags +ilme+ildct output is

[libx264 @ 0x2940600] interlace + weightp is not implemented
[libx264 @ 0x2940600] using mv_range_thread = 24
[libx264 @ 0x2940600] using SAR=16/15
[libx264 @ 0x2940600] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
AVX XOP FMA4 LZCNT
[libx264 @ 0x2940600] profile High 4:4:4 Predictive, level 3.0, 4:2:2 8-bit
[libx264 @ 0x2940600] 264 - core 142 r2495 6a301b6 - H.264/MPEG-4 AVC
codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html -
options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7
psy=0 mixed_ref=1 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0
deadzone=21,11 fast_pskip=0 chroma_qp_offset=0 threads=12
lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=tff
bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250
keyint_min=25 scenecut=40 intra_refresh=0 rc=cqp mbtree=0 qp=0

so
interlaced=tff
weightp=0

and ffprobe -show_frames says
interlaced_frame=1
top_field_first=0


with x264 encoder and -flags +ilme output is

[libx264 @ 0x37f47c0] using mv_range_thread = 24
[libx264 @ 0x37f47c0] using SAR=16/15
[libx264 @ 0x37f47c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
AVX XOP FMA4 LZCNT
[libx264 @ 0x37f47c0] profile High 4:4:4 Predictive, level 3.0, 4:2:2 8-bit
[libx264 @ 0x37f47c0] 264 - core 142 r2495 6a301b6 - H.264/MPEG-4 AVC
codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html -
options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7
psy=0 mixed_ref=1 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0
deadzone=21,11 fast_pskip=0 chroma_qp_offset=0 threads=12
lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0
bluray_compat=0 constrained_intra=0 bframes=0 weightp=2 keyint=250
keyint_min=25 scenecut=40 intra_refresh=0 rc=cqp mbtree=0 qp=0

So
interlaced=0
weightp=2

and ffprobe -show_frames says
interlaced_frame=0
top_field_first=0

I keep +ildtc to get interlaced even with the warning

Thanks for your patience.