Josh Fleming <[EMAIL PROTECTED]> added the comment: After updating to head yesterday, ffmpeg garbles the audio and superimposes a high pitch hissing sound if the input stream is pcm_u8 (so far any configuration of sample/bit rate). The same configuration worked fine ~5 months ago. I've attached a sample file for reproducing the issue.
OS: Ubuntu 8.04 Server Command: /usr/bin/nice /usr/local/bin/ffmpeg /usr/local/MediaEngine/temp/NDJjYzdiNGI5YjNkNDNkZDg2MWYyYzE0MTA1NTUzNDY.qt -vcodec flv -f flv -b 240000 -s 424x318 -acodec libmp3lame -ab 128000 -ar 44100 -ac 1 -r 25 /usr/local/MediaEngine/temp/NDJjYzdiNGI5YjNkNDNkZDg2MWYyYzE0MTA1NTUzNDY.out ffmpeg output: FFmpeg version SVN-r14730, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --enable-gpl --enable-postproc --enable-libvorbis --enable-libtheora --enable-liba52 --enable-libdc1394 --enable-libgsm --disable-debug --enable-libmp3lame --enable-libfaad --enable-libfaac --enable-libxvid --enable-pthreads --enable-libx264 --enable-libamr-nb --enable-libamr-wb --disable-mmx --enable-nonfree libavutil version: 49.9.0 libavcodec version: 51.64.0 libavformat version: 52.20.0 libavdevice version: 52.1.0 built on Aug 13 2008 14:33:19, gcc: 4.2.3 (Ubuntu 4.2.3-2ubuntu7)Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/usr/local/MediaEngine/temp/NDJjYzdiNGI5YjNkNDNkZDg2MWYyYzE0MTA1NTUzNDY.qt': Duration: 00:00:27.33, start: 0.000000, bitrate: 628 kb/s Stream #0.0(eng): Video: cinepak, yuv420p, 160x120, 15.00 tb(r) Stream #0.1(eng): Audio: pcm_u8, 22050 Hz, mono, s16, 176 kb/sOutput #0, flv, to '/usr/local/MediaEngine/temp/NDJjYzdiNGI5YjNkNDNkZDg2MWYyYzE0MTA1NTUzNDY.out': Stream #0.0(eng): Video: flv, yuv420p, 424x318, q=2-31, 240 kb/s, 25.00 tb(c) Stream #0.1(eng): Audio: libmp3lame, 44100 Hz, mono, s16, 128 kb/sStream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1Press [q] to stop encodingframe= 72 fps= 0 q=9.3 size= 264kB time=2.88 bitrate= 752.1kbits/s frame= 117 fps=113 q=11.3 size= 379kB time=4.68 bitrate= 663.6kbits/s frame= 197 fps=127 q=10.8 size= 561kB time=7.88 bitrate= 583.5kbits/s frame= 278 fps=136 q=13.3 size= 738kB time=11.12 bitrate= 543.6kbits/s frame= 363 fps=142 q=12.0 size= 909kB time=14.52 bitrate= 513.0kbits/s frame= 448 fps=146 q=13.5 size= 1075kB time=17.92 bitrate= 491.3kbits/s frame= 532 fps=149 q=15.7 size= 1238kB time=21.28 bitrate= 476.5kbits/s frame= 573 fps=141 q=16.5 size= 1312kB time=22.92 bitrate= 469.0kbits/s frame= 652 fps=142 q=17.8 size= 1461kB time=26.08 bitrate= 459.1kbits/s frame= 682 fps=144 q=14.1 Lsize= 1512kB time=27.28 bitrate= 454.1kbits/s video:1057kB audio:428kB global headers:0kB muxing overhead 1.838253% ______________________________________________________ FFmpeg issue tracker <[EMAIL PROTECTED]> <https://roundup.mplayerhq.hu/roundup/ffmpeg/issue582> ______________________________________________________
