On Sat, 16 May 2015 07:52:12 +0000 (UTC), Carl Eugen Hoyos <ceho...@ag.or.at> wrote:
>Please test the following: >$ ffmpeg -i inter.dts -ac 2 out16.wav >$ ffmpeg -i inter.dts -ac 2 -acodec pcm_s32le out32.wav >$ ffmpeg -i inter.dts -ac 2 -ab 640k out.ac3 >$ ffmpeg -i inter.dts -ac 2 -ab 320k out.mp2 Carl, I did test some of this stuff. It seemed that attempts to downmix via -ac 2 would work OK for WAV (pcm_s16le) but anytime converting to other formats (AC3, or MP3s) generated significant signal overload. However, the channel mixing DID occur. A workaround was to include -af volume=-10dB. However, although I'm not the poster with the problem, I've just done your suggestions and, for me ... - MP3 suffers overload - WAVs are OK - AC3 suffers overload - AAC are OK - MP2 are OK But I'll let him speak ... _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user