New submission from tripp <[EMAIL PROTECTED]>:
mp3 invalid new backstep
observed with mp3 files
from and upwards (of these bitrates):
8kHz 64k
11.025kHz 96k
12kHz 96k
16kHz 128k
44.1kHz 192k
48kHz 192k
sample provided 48kHz at 320k
(encoded with lame 3.97)
ffmpeg -i 48.320.mp3 out48.wav
FFmpeg version SVN-r14231, Copyright (c) 2000-2008 Fabrice Bellard, et al.
configuration: --enable-memalign-hack --enable-postproc --enable-swscale --ena
ble-gpl --enable-liba52 --enable-libfaac --enable-libfaad --enable-libgsm --enab
le-libmp3lame --enable-libnut --enable-libvorbis --enable-libtheora --enable-lib
xvid --enable-libx264 --disable-ffserver --disable-ffplay --enable-avisynth --en
able-small --enable-pthreads --extra-ldflags=-static --extra-cflags=-mtune=penti
um4 -mfpmath=sse -msse -fno-strict-aliasing
libavutil version: 49.7.0
libavcodec version: 51.60.0
libavformat version: 52.17.0
libavdevice version: 52.0.0
built on Jul 15 2008 04:17:40, gcc: 4.3.1
invalid new backstep 924
Input #0, mp3, from '48.320.mp3':
Duration: 00:00:07.56, start: 0.000000, bitrate: 321 kb/s
Stream #0.0: Audio: mp3, 48000 Hz, stereo, 320 kb/s
Output #0, wav, to 'out48.wav':
Stream #0.0: Audio: pcm_s16le, 48000 Hz, stereo, 1536 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Press [q] to stop encoding
invalid new backstep 924
invalid new backstep 513
invalid new backstep 525
invalid new backstep 524
invalid new backstep 514
invalid new backstep 924
size= 1422kB time=7.58 bitrate=1536.0kbits/s
video:0kB audio:1422kB global headers:0kB muxing overhead 0.003022%
i can't say i've heard something audible with the sample,
but it doesn;t inspire trust,
as i don't know what invalid backstep means,
it happens with a large range of samples,
and i've not spent a lot of time with a more technical check,
made more difficult in anycase by issue 498
ty
tripp
/MPlayer/incoming/mp3glitch/48.320.mp3
----------
messages: 2503
nosy: tripp
priority: normal
status: new
substatus: new
title: mp3 decoder / invalid new backstep
type: bug
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FFmpeg issue tracker <[EMAIL PROTECTED]>
<https://roundup.mplayerhq.hu/roundup/ffmpeg/issue541>
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