[FFmpeg-trac] #2122(swresample:new): Commit 75d900d makes skipping in the input while using swresample very slow
FFmpeg
trac at avcodec.org
Tue Jan 8 15:40:51 CET 2013
#2122: Commit 75d900d makes skipping in the input while using swresample very slow
------------------------------------+--------------------------------------
Reporter: eelco | Owner: michael
Type: defect | Status: new
Priority: normal | Component: swresample
Version: 1.1 | Resolution:
Keywords: regression | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
------------------------------------+--------------------------------------
Comment (by eelco):
Yes.
{{{
time ./ffmpeg -ss 2 -i ~/Downloads/example.mkv -t 1 -vcodec copy -f
matroska -map 0:0 -acodec ac3 -async 1 -map 0:1 -y /dev/null
ffmpeg version N-48635-g8615970 Copyright (c) 2000-2013 the FFmpeg
developers
built on Jan 8 2013 15:38:39 with llvm-gcc 4.2.1 (LLVM build
2336.11.00)
configuration: --prefix=/Users/eelco/Projects/Beamer/FFmpeg/build
--enable-gpl --enable-version3 --enable-libx264 --disable-shared --enable-
static --enable-libtheora --enable-libvorbis --enable-libvo-aacenc
--disable-doc --extra-cflags='-DMACOSX_DEPLOYMENT_TARGET=10.6 -isysroot
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk
-mmacosx-version-min=10.6
-I/Users/eelco/Projects/Beamer/FFmpeg/build/include' --extra-
ldflags='-isysroot
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk
-mmacosx-version-min=10.6 -L/Users/eelco/Projects/Beamer/FFmpeg/build/lib'
libavutil 52. 13.100 / 52. 13.100
libavcodec 54. 86.100 / 54. 86.100
libavformat 54. 59.106 / 54. 59.106
libavdevice 54. 3.102 / 54. 3.102
libavfilter 3. 32.100 / 3. 32.100
libswscale 2. 1.103 / 2. 1.103
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
Input #0, matroska,webm, from '/Users/eelco/Downloads/example.mkv':
Metadata:
title : Project X Extended Cut (2012) – Release for HDCLUB
by Pro_Rock_
creation_time : 2012-08-05 02:07:48
Duration: 01:32:59.79, start: 0.000000, bitrate: 11159 kb/s
Stream #0:0(eng): Video: h264 (High), yuv420p, 1280x720, SAR 1:1 DAR
16:9, 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
Stream #0:1(rus): Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s
Metadata:
title : Дубляж
Stream #0:2(rus): Audio: dts (DTS), 48000 Hz, 5.1(side), fltp, 1536
kb/s (default)
Metadata:
title : VO MaksCiganov
Stream #0:3(eng): Audio: dts (DTS), 48000 Hz, 5.1(side), fltp, 1536
kb/s
Metadata:
title : Оригинал
Stream #0:4(rus): Subtitle: subrip (default)
Metadata:
title : Force
Stream #0:5(rus): Subtitle: subrip
Metadata:
title : Full
Stream #0:6(eng): Subtitle: subrip
Metadata:
title : Оригинал
-async is forwarded to lavfi similarly to -af
aresample=async=1:min_hard_comp=0.100000.
Output #0, matroska, to '/dev/null':
Metadata:
title : Project X Extended Cut (2012) – Release for HDCLUB
by Pro_Rock_
encoder : Lavf54.59.106
Stream #0:0(eng): Video: h264, yuv420p, 1280x720 [SAR 1:1 DAR 16:9],
q=2-31, 23.98 fps, 1k tbn, 1k tbc (default)
Stream #0:1(rus): Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
Metadata:
title : Дубляж
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (ac3 -> ac3)
Press [q] to stop, [?] for help
frame= 74 fps=6.5 q=-1.0 Lsize= 86kB time=00:00:01.01 bitrate=
690.1kbits/s
video:28kB audio:56kB subtitle:0 global headers:0kB muxing overhead
1.790181%
11.46 real 3.66 user 7.47 sys
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2122#comment:2>
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