[MEncoder-users] Making an AVI which delcares itself to be interlaced

[Andy Civil]

Grozdan Nikolov (openSUSE Linux) wrote:
> On Friday 21 March 2008 23:25, Andy Civil wrote:
>> Grozdan Nikolov (openSUSE Linux) wrote:
>>> On Friday 21 March 2008 22:54, Andy Civil wrote:
>>>> Hi
>>>>
>>>> I'm trying to make an xvid avi file which is interlaced. Although the
>>>> following command works quite well, the resulting AVI doesn't seem to be
>>>> LABELLED as interlaced (although the content clearly is). What this
>>>> means is, then when I use this kind of file in another program, I have
>>>> to specify for each one, that it's interlaced (which is a bind, when I
>>>> have fifty or so to do).
>>>>
>>>> If I use "gspot" on the file produced here, it doesn't light up with
>>>> either TFF or BFF flags.
>>>>
>>>> Any options I'm missing that could make the interlaced flag be on?
>>> try...
>>>
>>> -vf scale=720:480,harddup,phase=t,tinterlace=2
>>>
>>> alternatively
>>>
>>> -vf scale=720:480,harddup,tinterlace=4
>>>
>>> since interlacing is added after scaling, there's no need to enable
>>> interlace-aware software scaling
>>>
>>> also keep in mind that when interlacing, your frame rate will be halved.
>>> So if you interlace a 60p content (59.94 fps) it will become 30i (29.970
>>> fps). You must use in this case the -ofps 30000/1001 options
>> Thanks, but I think I do need interlace-aware scaling because my source is
>> 1440 x 1080 (interlaced). In fact this was the feature that forced me out
>> of FFmpeg into mencoder. I'm going from 30i to 30i. Nevertheless, I will
>> google for your suggested options phase and tinterlace to see if they will
>> help me.
> 
> then why don't you just encode it as interlaced if the source is interlaced to 
> begin with? why do you need to interlace it again with some filters? Just 
> enable SWS interlace-aware mode and enable interlacing in Xvid too and encode 
> it as is if it's already interlaced like you said...
>

Because I don't know how to do that. The string after "xvidencopts" is, I 
believe, control for the xvid encoder, which I guess I need, since I'm changing 
from AVCHD (sp?) to xvid. The "filters" are scale (to scale it), il=s (which was 
a futile attempt to control the interlacing, and which failed - I'll take it 
out), and harddup. I have no idea what harddup does, except that it has been 
recommended to people to keep audio synched.

What would you suggest?

>>>> My command (copy/paste):
>>>>
>>>> I:\me\mencoder -oac mp3lame -lameopts preset=standard:fast -ovc xvid
>>>> -xvidencopts
>>>> trellis:quant_type=h263:vhq=2:me_quality=6:chroma_me:closed_gop:max_bfra
>>>> mes =2:bitrate=10000000:interlacing=1 -vf scale=720:480:1,il=s,harddup
>>>> -ofps 30000/1001 -o
>>>> "XVID\20080215145859_i1_vils.m2t.avi" "20080215145859.m2t"
>>>>
>>>> Here's the start of my output:
>>>> E:\Sony\2008-02-15>I:\me\mencoder -oac mp3lame -lameopts
>>>> preset=standard:fast -o vc xvid -xvidencopts
>>>> trellis:quant_type=h263:vhq=2:me_quality=6:chroma_me:closed
>>>> _gop:max_bframes=2:bitrate=10000000:interlacing=1 -vf
>>>> scale=720:480:1,il=s,hardd up -ofps 30000/1001 -o
>>>> "XVID\20080215145859_i1_vils.m2t.avi" "20080215145859.m2t "
>>>> MEncoder Sherpya-SVN-r25962-4.2.3 (C) 2000-2008 MPlayer Team
>>>> CPU: Intel(R) Pentium(R) 4 CPU 2.40GHz (Family: 15, Model: 2, Stepping:
>>>> 7) CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
>>>> Compiled with runtime CPU detection.
>>>> success: format: 0  data: 0x0 - 0x19af5d4
>>>> TS file format detected.
>>>> VIDEO MPEG2(pid=2064) AUDIO MPA(pid=2068) NO SUBS (yet)!  PROGRAM N. 100
>>>> VIDEO:  MPEG2  1440x1080  (aspect 3)  29.970 fps  25000.0 kbps (3125.0
>>>> kbyte/s) [V] filefmt:29  fourcc:0x10000002  size:1440x1080  fps:29.97
>>>> ftime:=0.0334
>>>> ========================================================================
>>>> == Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
>>>> AUDIO: 48000 Hz, 2 ch, s16le, 384.0 kbit/25.00% (ratio: 48000->192000)
>>>> Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
>>>> ========================================================================
>>>> == xvid: using library version 1.1.3 (build xvid-1.1.3)
>>>> Opening video filter: [expand osd=1]
>>>> Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
>>>> Opening video filter: [harddup]
>>>> Opening video filter: [il=s]
>>>> Opening video filter: [scale w=720 h=480 interlaced=1]
>>>> ========================================================================
>>>> == Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
>>>> VDec: vo config request - 1440 x 1080 (preferred colorspace: Mpeg PES)
>>>> The selected video_out device is incompatible with this codec.
>>>> Try appending the scale filter to your filter list,
>>>> e.g. -vf spp,scale instead of -vf spp.
>>>> VDecoder init failed :(
>>>> Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder
>>>> libmpeg2-v0.4.0b Selected video codec: [mpeg12] vfm: libmpeg2 (MPEG-1 or
>>>> 2 (libmpeg2))
>>>> ========================================================================
>>>> == MP3 audio selected.
>>>> VDec: vo config request - 1440 x 1080 (preferred colorspace: Planar
>>>> YV12) VDec: using Planar YV12 as output csp (no 0)
>>>> Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
>>>> SwScaler: reducing / aligning filtersize 9 -> 8
>>>> SwScaler: reducing / aligning filtersize 9 -> 8
>>>> SwScaler: reducing / aligning filtersize 10 -> 9
>>>>
>>>> Thks for any hints...
>> _______________________________________________
>> MEncoder-users mailing list
>> MEncoder-users at mplayerhq.hu
>> https://lists.mplayerhq.hu/mailman/listinfo/mencoder-users
>