[FFmpeg-user] Is this a bug? (1)

Francois Visagie francois.visagie at gmail.com
Sun May 26 10:49:40 CEST 2013


Hi All,

 

When specifying a container DAR for MKV, it does not take effect when muxing
copied streams, only when the video is also being re-encoded. Is this a bug?

 

C:\Users\fvisagie\Videos\Home Videos\Testing\MKV>ffmpeg -i DV.avi -codec:v
copy -codec:a copy -vf setdar=dar=4/3 darmuxed.mkv

ffmpeg version N-53380-g0fb7fef Copyright (c) 2000-2013 the FFmpeg
developers

  built on May 23 2013 14:19:35 with gcc 4.7.3 (GCC)

  configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gnutls --enab

le-iconv --enable-libass --enable-libbluray --enable-libcaca
--enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug
--enable-libmp3lame --ena

ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
--enable-libsp

eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc
--enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264
--enable-libxavs --

enable-libxvid --enable-zlib

  libavutil      52. 33.100 / 52. 33.100

  libavcodec     55. 11.100 / 55. 11.100

  libavformat    55.  7.100 / 55.  7.100

  libavdevice    55.  1.101 / 55.  1.101

  libavfilter     3. 69.101 /  3. 69.101

  libswscale      2.  3.100 /  2.  3.100

  libswresample   0. 17.102 /  0. 17.102

  libpostproc    52.  3.100 / 52.  3.100

[avi @ 0243b200] non-interleaved AVI

Guessed Channel Layout for  Input Stream #0.1 : stereo

Input #0, avi, from 'DV.avi':

  Duration: 00:00:02.00, start: 0.000000, bitrate: 49663 kb/s

    Stream #0:0: Video: lagarith (LAGS / 0x5347414C), yuv420p, 720x576, 25
tbr, 25 tbn, 25 tbc

    Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, stereo,
s16, 1536 kb/s

Output #0, matroska, to 'darmuxed.mkv':

  Metadata:

    encoder         : Lavf55.7.100

    Stream #0:0: Video: lagarith (LAGS / 0x5347414C), yuv420p, 720x576,
q=2-31, 1k tbn, 25 tbc

    Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, stereo,
1536 kb/s

Stream mapping:

  Stream #0:0 -> #0:0 (copy)

 Stream #0:1 -> #0:1 (copy)

Press [q] to stop, [?] for help

frame=   50 fps=0.0 q=-1.0 Lsize=   12116kB time=00:00:02.00
bitrate=49627.4kbits/s

video:11738kB audio:375kB subtitle:0 global headers:0kB muxing overhead
0.026750%

 

C:\Users\fvisagie\Videos\Home Videos\Testing\MKV>ffmpeg -i DV.avi -codec:a
copy -vf setdar=dar=4/3 darencoded.mkv

ffmpeg version N-53380-g0fb7fef Copyright (c) 2000-2013 the FFmpeg
developers

  built on May 23 2013 14:19:35 with gcc 4.7.3 (GCC)

  configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gnutls --enab

le-iconv --enable-libass --enable-libbluray --enable-libcaca
--enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug
--enable-libmp3lame --ena

ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
--enable-libsp

eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc
--enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264
--enable-libxavs --

enable-libxvid --enable-zlib

  libavutil      52. 33.100 / 52. 33.100

  libavcodec     55. 11.100 / 55. 11.100

  libavformat    55.  7.100 / 55.  7.100

  libavdevice    55.  1.101 / 55.  1.101

  libavfilter     3. 69.101 /  3. 69.101

  libswscale      2.  3.100 /  2.  3.100

  libswresample   0. 17.102 /  0. 17.102

  libpostproc    52.  3.100 / 52.  3.100

[avi @ 023b79e0] non-interleaved AVI

Guessed Channel Layout for  Input Stream #0.1 : stereo

Input #0, avi, from 'DV.avi':

  Duration: 00:00:02.00, start: 0.000000, bitrate: 49663 kb/s

    Stream #0:0: Video: lagarith (LAGS / 0x5347414C), yuv420p, 720x576, 25
tbr, 25 tbn, 25 tbc

    Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, stereo,
s16, 1536 kb/s

[libx264 @ 03e0a660] using SAR=16/15

[libx264 @ 03e0a660] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX

[libx264 @ 03e0a660] profile High, level 3.0

[libx264 @ 03e0a660] 264 - core 133 r2334 a3ac64b - H.264/MPEG-4 AVC codec -
Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1
ref=3 deb

lock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00
mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11
fast_pskip=1 chro

ma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0
decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3
b_pyramid=2 b_adapt=1

b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25
scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
qcomp=0.60 qpmin=

0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00

Output #0, matroska, to 'darencoded.mkv':

  Metadata:

    encoder         : Lavf55.7.100

    Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv420p, 720x576
[SAR 16:15 DAR 4:3], q=-1--1, 1k tbn, 25 tbc

    Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, stereo,
1536 kb/s

Stream mapping:

  Stream #0:0 -> #0:0 (lagarith -> libx264)

  Stream #0:1 -> #0:1 (copy)

Press [q] to stop, [?] for help

frame=   50 fps= 37 q=-1.0 Lsize=     669kB time=00:00:02.00
bitrate=2739.4kbits/s

video:292kB audio:375kB subtitle:0 global headers:0kB muxing overhead
0.246353%

[libx264 @ 03e0a660] frame I:1     Avg QP:24.92  size: 27683

[libx264 @ 03e0a660] frame P:23    Avg QP:25.26  size:  9327

[libx264 @ 03e0a660] frame B:26    Avg QP:28.09  size:  2163

[libx264 @ 03e0a660] consecutive B-frames:  2.0% 80.0% 18.0%  0.0%

[libx264 @ 03e0a660] mb I  I16..4: 20.1% 71.2%  8.6%

[libx264 @ 03e0a660] mb P  I16..4:  0.3%  0.7%  0.0%  P16..4: 47.1% 14.2%
11.2%  0.0%  0.0%    skip:26.4%

[libx264 @ 03e0a660] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8: 47.4%  3.6%
0.8%  direct: 1.1%  skip:47.1%  L0:44.9% L1:48.9% BI: 6.2%

[libx264 @ 03e0a660] 8x8 transform intra:70.2% inter:74.0%

[libx264 @ 03e0a660] coded y,uvDC,uvAC intra: 68.5% 77.8% 19.5% inter: 15.3%
26.1% 0.3%

[libx264 @ 03e0a660] i16 v,h,dc,p:  9% 37%  7% 47%

[libx264 @ 03e0a660] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  9% 34% 22%  4%  5%  4%
7%  4% 12%

[libx264 @ 03e0a660] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 14% 38% 12%  5%  4%  4%
8%  3% 11%

[libx264 @ 03e0a660] i8c dc,h,v,p: 40% 36% 18%  6%

[libx264 @ 03e0a660] Weighted P-Frames: Y:0.0% UV:0.0%

[libx264 @ 03e0a660] ref P L0: 52.8% 14.4% 22.2% 10.6%

[libx264 @ 03e0a660] ref B L0: 64.4% 34.4%  1.2%

[libx264 @ 03e0a660] ref B L1: 96.7%  3.3%

[libx264 @ 03e0a660] kb/s:1193.74

 

Thanks,

Francois

 

Francois Visagie

 

 

T: +27 (83) 326-4358

F: +27 (86) 511-3490

E: francois.visagie at gmail.com

 

 



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