Opened 9 years ago

Last modified 8 years ago

#1280 closed defect

Loss of alpha with yadif filter (bgra->yuv420 conv inserted instead of bgra->yuva420p) — at Version 2

Reported by: ronag Owned by:
Priority: normal Component: avfilter
Version: git-master Keywords: alpha
Cc: Blocked By:
Blocking: Reproduced by developer: yes
Analyzed by developer: no

Description (last modified by cehoyos)

M:\_media>ffmpeg -i wipe.mov -vf yadif=1:-1 wipe2.mov
ffmpeg version N-40301-gc1fe2db Copyright (c) 2000-2012 the FFmpeg developers
  built on May  3 2012 11:44:06 with gcc 4.6.3
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-ru
ntime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass
 --enable-libcelt --enable-libopencore-amrnb --enable-libopencore-amrwb --enable
-libfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libope
njpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libth
eora --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-
libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --e
nable-zlib
  libavutil      51. 49.100 / 51. 49.100
  libavcodec     54. 17.101 / 54. 17.101
  libavformat    54.  3.100 / 54.  3.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 72.104 /  2. 72.104
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 11.100 /  0. 11.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'wipe.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    creation_time   : 2010-10-19 15:24:10
  Duration: 00:00:01.24, start: 0.000000, bitrate: 8185 kb/s
    Stream #0:0(eng): Video: qtrle (rle  / 0x20656C72), bgra, 720x576, 6485 kb/s
, SAR 512:351 DAR 640:351, 25 fps, 25 tbr, 25 tbn, 25 tbc
    Metadata:
      creation_time   : 2010-10-19 15:24:10
      handler_name    : Apples aliasdatahanterare
    Stream #0:1(eng): Audio: pcm_s16be (twos / 0x736F7774), 48000 Hz, 2 channels
, s16, 1536 kb/s
    Metadata:
      creation_time   : 2010-10-19 15:24:10
      handler_name    : Apples aliasdatahanterare
[buffer @ 0000000001e7ae70] w:720 h:576 pixfmt:bgra tb:1/1000000 sar:512/351 sws
_param:flags=2
[yadif @ 0000000001e7af30] mode:1 parity:-1 auto_enable:0
[yadif @ 0000000001e7af30] auto-inserting filter 'auto-inserted scale 0' between
 the filter 'src' and the filter 'Parsed_yadif_0'
[scale @ 0000000001e7af90] w:720 h:576 '''fmt:bgra sar:512/351 -> w:720 h:576 fmt:y
uv420p''' sar:512/351 flags:0x4
[libx264 @ 0000000001ec9d20] using SAR=512/351
[libx264 @ 0000000001ec9d20] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShu
ffle SSE4.2 AVX
[libx264 @ 0000000001ec9d20] profile High, level 3.0
[libx264 @ 0000000001ec9d20] 264 - core 120 r2164 da19765 - H.264/MPEG-4 AVC cod
ec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 r
ef=3 deblock=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_pski
p=1 chroma_qp_offset=-2 threads=12 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 di
rect=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
Guessed Channel Layout for  Input Stream #0.1 : stereo
strptime() unavailable on this system, cannot convert the date string.
Output #0, mov, to 'wipe2.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    creation_time   : 2010-10-19 15:24:10
    encoder         : Lavf54.3.100
    Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuv420p, 720x576 [SAR 512
:351 DAR 640:351], q=-1--1, 25 tbn, 25 tbc
    Metadata:
      creation_time   : 2010-10-19 15:24:10
      handler_name    : Apples aliasdatahanterare
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, s16, 128
 kb/s
    Metadata:
      creation_time   : 2010-10-19 15:24:10
      handler_name    : Apples aliasdatahanterare
Stream mapping:
  Stream #0:0 -> #0:0 (qtrle -> libx264)
  Stream #0:1 -> #0:1 (pcm_s16be -> libvo_aacenc)

Change History (2)

comment:1 Changed 9 years ago by cehoyos

As-is, this ticket is invalid, because libx264 does not support yuva420p, so a conversion to yuva420p would not make sense with the command line you proposed.

Did you try encoding to ffv1, v408 or libopenjpeg?

comment:2 Changed 9 years ago by cehoyos

  • Description modified (diff)
Note: See TracTickets for help on using tickets.