Opened 13 years ago
Closed 12 years ago
#1408 closed defect (fixed)
Encoding to mp3 produces a file with audio and video by default
Reported by: | Carl Eugen Hoyos | Owned by: | |
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Priority: | important | Component: | undetermined |
Version: | git-master | Keywords: | mp3 regression |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | yes | |
Analyzed by developer: | no |
Description
http://thread.gmane.org/gmane.comp.video.ffmpeg.user/37424
Since 2dfea12, FFmpeg by default creates a video (png) stream when encoding mp3, this causes a severe performance regression because video has to be decoded.
$ ffmpeg -i fate-suite/svq3/Vertical400kbit.sorenson3.mov out.mp3 ffmpeg version N-41284-ge00b2d2 Copyright (c) 2000-2012 the FFmpeg developers built on Jun 4 2012 08:52:52 with gcc 4.3.2 configuration: --cc=/usr/local/gcc-4.3.2/bin/gcc --enable-gpl --enable-libopenjpeg --enable-libvorbis --enable-libspeex --enable-libmp3lame --enable-libtheora --extra-ldflags=-lm --enable-libvpx --enable-libxavs libavutil 51. 56.100 / 51. 56.100 libavcodec 54. 23.100 / 54. 23.100 libavformat 54. 6.101 / 54. 6.101 libavdevice 54. 0.100 / 54. 0.100 libavfilter 2. 78.100 / 2. 78.100 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 15.100 / 0. 15.100 libpostproc 52. 0.100 / 52. 0.100 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x90123c0] max_analyze_duration 5000000 reached at 5000998 Guessed Channel Layout for Input Stream #0.1 : mono Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'fate-suite/svq3/Vertical400kbit.sorenson3.mov': Metadata: creation_time : 2001-03-20 16:17:18 title : Vertical Online SV3 Demo title-eng : Vertical Online SV3 Demo artist : Logan Kelsey artist-eng : Logan Kelsey copyright : © Vertical Online 2001 copyright-eng : © Vertical Online 2001 encoder : Sorenson Video 3 encoder-eng : Sorenson Video 3 Duration: 00:00:43.57, start: 0.000000, bitrate: 580 kb/s Stream #0:0(eng): Video: svq3 (SVQ3 / 0x33515653), yuvj420p, 320x240, 391 kb/s, 30.02 fps, 30 tbr, 600 tbn, 600 tbc Metadata: creation_time : 2001-03-20 16:17:18 handler_name : Apple Alias Data Handler Stream #0:1(eng): Audio: adpcm_ima_qt (ima4 / 0x34616D69), 44100 Hz, mono, s16, 176 kb/s Metadata: creation_time : 2001-03-20 16:17:18 handler_name : Apple Alias Data Handler [buffer @ 0x900fa20] w:320 h:240 pixfmt:yuvj420p tb:1/600 sar:0/1 sws_param:flags=2 [ffmpeg_buffersink @ 0x900f8e0] No opaque field provided [format @ 0x900f9e0] auto-inserting filter 'auto-inserted scaler 0' between the filter 'Parsed_null_0' and the filter 'format' [auto-inserted scaler 0 @ 0x9012280] w:320 h:240 fmt:yuvj420p sar:0/1 -> w:320 h:240 fmt:rgb24 sar:0/1 flags:0x4 Output #0, mp3, to 'out.mp3': Metadata: TDEN : 2001-03-20 16:17:18 TIT2 : Vertical Online SV3 Demo title-eng : Vertical Online SV3 Demo TPE1 : Logan Kelsey artist-eng : Logan Kelsey TCOP : © Vertical Online 2001 copyright-eng : © Vertical Online 2001 encoder-eng : Sorenson Video 3 TSSE : Lavf54.6.101 Stream #0:0(eng): Video: png, rgb24, 320x240, q=2-31, 200 kb/s, 90k tbn, 30 tbc Metadata: creation_time : 2001-03-20 16:17:18 handler_name : Apple Alias Data Handler Stream #0:1(eng): Audio: mp3, 44100 Hz, mono, s16 Metadata: creation_time : 2001-03-20 16:17:18 handler_name : Apple Alias Data Handler Stream mapping: Stream #0:0 -> #0:0 (svq3 -> png) Stream #0:1 -> #0:1 (adpcm_ima_qt -> libmp3lame) Press [q] to stop, [?] for help Multiple frames in a packet from stream 1 [mp3 @ 0x9018fa0] Got more than one picture in stream 0, ignoring. frame= 1308 fps= 49 q=0.0 Lsize= 341kB time=00:00:43.57 bitrate= 64.2kbits/s video:86771kB audio:341kB global headers:0kB muxing overhead -99.608084% [libmp3lame @ 0x9011780] 1 frames left in que on closing
Change History (2)
comment:1 by , 13 years ago
comment:2 by , 12 years ago
Reproduced by developer: | set |
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Resolution: | → fixed |
Status: | new → closed |
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Video codec can be disabled, but storing image into tags should not be enabled by default....