#1280: Loss of alpha with yadif filter (bgra->yuv420 conv inserted instead of
bgra->yuva420p)
-------------------------------------+-------------------------------------
Reporter: ronag | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: unspecified | undetermined
Keywords: lavfi | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
-------------------------------------+-------------------------------------
Comment (by ronag):
How do I modify the description?
Here are two logs that should be valid and have the problem.
M:\_media>ffmpeg -i wipe.mov -vcodec qtrle -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
File 'wipe2.mov' already exists. Overwrite ? [y/N] y
w:720 h:576 pixfmt:bgra tb:1/1000000 sar:512/351 sws_param:flags=2
[yadif @ 0000000001e032b0] mode:1 parity:-1 auto_enable:0
[yadif @ 0000000001e032b0] auto-inserting filter 'auto-inserted scale 0'
between
the filter 'src' and the filter 'Parsed_yadif_0'
[scale @ 0000000001e03500] w:720 h:576 fmt:bgra sar:512/351 -> w:720 h:576
fmt:g
ray sar:512/351 flags:0x4
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: qtrle (rle / 0x20656C72), gray, 720x576 [SAR
512:3
51 DAR 640:351], q=2-31, 200 kb/s, 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 -> qtrle)
Stream #0:1 -> #0:1 (pcm_s16be -> libvo_aacenc)
Press [q] to stop, [?] for help
Input stream #0:1 frame changed from rate:48000 fmt:s16 ch:2 chl:0x0 to
rate:480
00 fmt:s16 ch:2 chl:0x3
frame= 32 fps=0.0 q=0.0 Lsize= 736kB time=00:00:01.24
bitrate=4837.0kbits/
s dup=0 drop=28
video:714kB audio:20kB global headers:0kB muxing overhead 0.280581%
-------------------------------------------------------------------------
M:\_media>ffmpeg -i wipe.mov -vcodec ffv1 -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
File 'wipe2.mov' already exists. Overwrite ? [y/N] y
w:720 h:576 pixfmt:bgra tb:1/1000000 sar:512/351 sws_param:flags=2
[yadif @ 0000000001e7e790] mode:1 parity:-1 auto_enable:0
[yadif @ 0000000001e7e790] auto-inserting filter 'auto-inserted scale 0'
between
the filter 'src' and the filter 'Parsed_yadif_0'
[scale @ 0000000001e7e9e0] w:720 h:576 fmt:bgra sar:512/351 -> w:720 h:576
fmt:y
uv420p sar:512/351 flags:0x4
Guessed Channel Layout for Input Stream #0.1 : stereo
[mov @ 0000000001e210d0] Using MS style video codec tag, the file may be
unplaya
ble!
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: ffv1, yuv420p, 720x576 [SAR 512:351 DAR
640:351], q
=2-31, 200 kb/s, 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 -> ffv1)
Stream #0:1 -> #0:1 (pcm_s16be -> libvo_aacenc)
Press [q] to stop, [?] for help
Input stream #0:1 frame changed from rate:48000 fmt:s16 ch:2 chl:0x0 to
rate:480
00 fmt:s16 ch:2 chl:0x3
frame= 32 fps=0.0 q=0.0 Lsize= 131kB time=00:00:01.24 bitrate=
861.3kbits/
s dup=0 drop=28
video:109kB audio:20kB global headers:0kB muxing overhead 1.596373%
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1280#comment:3>
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