[FFmpeg-user] Is it possible to convert any video to DV 50 Mbps using FFMpeg ?

Shyam Sundar sw.craftsman at gmail.com
Thu Jul 3 20:22:53 CEST 2014


Hi,

Thanks Carl & Andy for the reply,

I tried .. but it doesn't seem to generate 50 Mbps video-bitrate output. I
am checking video properties in Media Info.

--------------------------------------------------------------------------------------------------------------------------
C:\>ffmpeg -i C:\Wildlife.wmv -f dv -target ntsc-dv -b:v 50m -
qscale 15 -vol 256 -strict experimental -pix_fmt yuv422p "C:\Wildlife.dv"

ffmpeg version 2.2.1 Copyright (c) 2000-2014 the FFmpeg developers
  built on Apr 11 2014 00:32:01 with gcc 4.8.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls
--enab
le-iconv --enable-libass --enable-libbluray --enable-libcaca
--enable-libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
--ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
--enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvidstab
--enable-libvo-aa
cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
--enable-libwavp
ack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  libavutil      52. 66.100 / 52. 66.100
  libavcodec     55. 52.102 / 55. 52.102
  libavformat    55. 33.100 / 55. 33.100
  libavdevice    55. 10.100 / 55. 10.100
  libavfilter     4.  2.100 /  4.  2.100
  libswscale      2.  5.102 /  2.  5.102
  libswresample   0. 18.100 /  0. 18.100
  libpostproc    52.  3.100 / 52.  3.100
Guessed Channel Layout for  Input Stream #0.0 : stereo
Input #0, asf, from 'C:\Users\Public\Videos\Sample Videos\Wildlife.wmv':
  Metadata:
    SfOriginalFPS   : 299700
    WMFSDKVersion   : 11.0.6001.7000
    WMFSDKNeeded    : 0.0.0.0000
    comment         : Footage: Small World Productions, Inc; Tourism New
Zealand
 | Producer: Gary F. Spradling | Music: Steve Ball
    title           : Wildlife in HD
    copyright       : © 2008 Microsoft Corporation
    IsVBR           : 0
    DeviceConformanceTemplate: AP at L3
  Duration: 00:00:30.09, start: 0.000000, bitrate: 6977 kb/s
    Stream #0:0(eng): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, stereo,
fltp
, 192 kb/s
    Stream #0:1(eng): Video: vc1 (Advanced) (WVC1 / 0x31435657), yuv420p,
1280x7
20, 5942 kb/s, 29.97 tbr, 1k tbn, 1k tbc
Please use -q:a or -q:v, -qscale is ambiguous
File 'C:\Users\Public\Videos\Sample Videos\Wildlife.dv' already exists.
Overwrit
e ? [y/N] y
Output #0, dv, to 'C:\Users\Public\Videos\Sample Videos\Wildlife.dv':
  Metadata:
    SfOriginalFPS   : 299700
    WMFSDKVersion   : 11.0.6001.7000
    WMFSDKNeeded    : 0.0.0.0000
    comment         : Footage: Small World Productions, Inc; Tourism New
Zealand
 | Producer: Gary F. Spradling | Music: Steve Ball
    title           : Wildlife in HD
    copyright       : © 2008 Microsoft Corporation
    IsVBR           : 0
    DeviceConformanceTemplate: AP at L3
    encoder         : Lavf55.33.100
    Stream #0:0(eng): Video: dvvideo, yuv422p, 720x480, q=2-31, 90k tbn,
29.97 t
bc
    Stream #0:1(eng): Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
Stream mapping:
  Stream #0:1 -> #0:0 (vc1 -> dvvideo)
  Stream #0:0 -> #0:1 (wmav2 -> pcm_s16le)
Press [q] to stop, [?] for help
frame=   19 fps=0.0 q=0.0 size=       0kB time=00:00:00.63 bitrate=
0.0kbits/s
frame=   39 fps= 39 q=0.0 size=       0kB time=00:00:01.30 bitrate=
0.0kbits/s
frame=   60 fps= 39 q=0.0 size=       0kB time=00:00:02.00 bitrate=
0.0kbits/s
frame=   81 fps= 40 q=0.0 size=       0kB time=00:00:02.70 bitrate=
0.0kbits/s
frame=  102 fps= 40 q=0.0 size=       0kB time=00:00:03.40 bitrate=
0.0kbits/s
frame=  122 fps= 40 q=0.0 size=    4453kB time=00:00:04.07
bitrate=8961.5kbits/s
frame=  146 fps= 41 q=0.0 size=    8203kB time=00:00:04.87
bitrate=13794.4kbits/
frame=  167 fps= 41 q=0.0 size=   14531kB time=00:00:05.57
bitrate=21363.1kbits/
frame=  186 fps= 41 q=0.0 size=   20391kB time=00:00:06.20
bitrate=26915.0kbits/
frame=  204 fps= 40 q=0.0 size=   28359kB time=00:00:06.80
bitrate=34130.6kbits/
frame=  230 fps= 41 q=0.0 size=   32109kB time=00:00:07.67
bitrate=34275.3kbits/
frame=  258 fps= 42 q=0.0 size=   36562kB time=00:00:08.60
bitrate=34793.1kbits/
frame=  286 fps= 43 q=0.0 size=   40312kB time=00:00:09.54
bitrate=34606.0kbits/
frame=  314 fps= 44 q=0.0 size=   45703kB time=00:00:10.47
bitrate=35735.0kbits/
frame=  343 fps= 45 q=0.0 size=   49688kB time=00:00:11.44
bitrate=35565.6kbits/
frame=  365 fps= 45 q=0.0 size=   55078kB time=00:00:12.17
bitrate=37047.9kbits/
frame=  386 fps= 45 q=0.0 size=   60938kB time=00:00:12.87
bitrate=38759.2kbits/
frame=  407 fps= 44 q=0.0 size=   66094kB time=00:00:13.58
bitrate=39869.7kbits/
frame=  428 fps= 44 q=0.0 size=   71250kB time=00:00:14.28
bitrate=40871.3kbits/
frame=  448 fps= 44 q=0.0 size=   76641kB time=00:00:14.94
bitrate=42000.9kbits/
frame=  471 fps= 44 q=0.0 size=   81094kB time=00:00:15.71
bitrate=42271.1kbits/
frame=  493 fps= 44 q=0.0 size=   84844kB time=00:00:16.44
bitrate=42252.3kbits/
frame=  514 fps= 44 q=0.0 size=   89531kB time=00:00:17.15
bitrate=42765.0kbits/
frame=  532 fps= 44 q=0.0 size=   96328kB time=00:00:17.75
bitrate=44454.8kbits/
frame=  549 fps= 43 q=0.0 size=  102656kB time=00:00:18.31
bitrate=45908.2kbits/
frame=  565 fps= 43 q=0.0 size=  109922kB time=00:00:18.85
bitrate=47765.3kbits/
frame=  583 fps= 42 q=0.0 size=  116250kB time=00:00:19.45
bitrate=48955.5kbits/
frame=  603 fps= 42 q=0.0 size=  121875kB time=00:00:20.12
bitrate=49622.0kbits/
frame=  622 fps= 42 q=0.0 size=  128203kB time=00:00:20.75
bitrate=50604.1kbits/
frame=  641 fps= 42 q=0.0 size=  134062kB time=00:00:21.38
bitrate=51348.3kbits/
frame=  664 fps= 42 q=0.0 size=  138516kB time=00:00:22.15
bitrate=51216.3kbits/
frame=  686 fps= 42 q=0.0 size=  145078kB time=00:00:22.88
bitrate=51922.4kbits/
frame=  708 fps= 42 q=0.0 size=  150000kB time=00:00:23.62
bitrate=52015.8kbits/
frame=  728 fps= 42 q=0.0 size=  155625kB time=00:00:24.29
bitrate=52483.8kbits/
frame=  749 fps= 42 q=0.0 size=  160312kB time=00:00:24.99
bitrate=52548.8kbits/
frame=  774 fps= 42 q=0.0 size=  164297kB time=00:00:25.82
bitrate=52115.3kbits/
frame=  799 fps= 42 q=0.0 size=  166875kB time=00:00:26.65
bitrate=51276.9kbits/
frame=  824 fps= 43 q=0.0 size=  171094kB time=00:00:27.49
bitrate=50978.1kbits/
frame=  846 fps= 43 q=0.0 size=  176016kB time=00:00:28.22
bitrate=51080.8kbits/
frame=  867 fps= 43 q=0.0 size=  180938kB time=00:00:28.92
bitrate=51237.3kbits/
frame=  887 fps= 42 q=0.0 size=  186797kB time=00:00:29.59
bitrate=51703.9kbits/
frame=  901 fps= 42 q=0.0 Lsize=  211172kB time=00:00:30.09
bitrate=57486.5kbits
/s
video:211172kB audio:5651kB subtitle:0 data:0 global headers:0kB muxing
overhead
 -2.606347%
--------------------------------------------------------------------------------------------------------------------------

Video Properties in Media Info :
--------------------------------------------------------------------------------------------------------------------------
General
Complete name                    : C:\Wildlife.dv
Format                                   : DV
Commercial name                : DVCPRO
File size                                 : 206 MiB
Duration                                 : 1mn 0s
Overall bit rate mode            : Constant
Overall bit rate                       : 28.8 Mbps
Recorded date                      : 1970-01-01 00:00:00.000

Video
Format                                   : DV
Commercial name                : DVCPRO
Duration                                 : 1mn 0s
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
Bit depth                                : 8 bits
Scan type                              : Interlaced
Scan order                            : Bottom Field First
Compression mode             : Lossy
Bits/(Pixel*Frame)                : 2.357
Time code of first frame       : 00:00:00:00
Time code source                 : Subcode time code
Stream size                            : 175 MiB (85%)

Audio #1
ID                                             : 0
Format                                    : PCM
Duration                                  : 1mn 0s
Bit rate mode                         : Constant
Bit rate                                    : 1 536 Kbps
Encoded bit rate                    : 0 bps
Channel(s)                              : 2 channels
Sampling rate                        : 48.0 KHz
Bit depth                                 : 16 bits
Stream size                            : 11.0 MiB (5%)

Audio #2
ID                                            : 1
Format                                   : PCM
Duration                                 : 1mn 0s
Bit rate mode                        : Constant
Bit rate                                   : 1 536 Kbps
Encoded bit rate                   : 0 bps
Channel(s)                             : 2 channels
Sampling rate                        : 48.0 KHz
Bit depth                                : 16 bits
Stream size                           : 11.0 MiB (5%)
--------------------------------------------------------------------------------------------------------------------------

Was wondering if you have any further suggestion ...

Thanks,
Rajiv


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