New submission from Niels Laukens <[email protected]>: Transcoding a file with 4ch audio (FL|FR|FC|LFE) to AAC (using libfaac) does not obey the requested bitrate. Some tests I already ran: * -ab 48k output.wav => 128kbps * -ab 48k -ac 2 output.wav => 64kbps * -ab 48k -ac 1 output.wav => 48kbps * -ab 48k output.ts => 242kbps (including lots of overhead) * -ab 48k -ac 2 output.ts => 121kbps (including lots of overhead) * -ab 48k -ac 1 output.ts => 90kbps (including lots of overhead)
Clearly, the 4ch encode uses much more than the requested 48k. All tests are done using SVN-r19467. In attachement you can find the complete command and output as well as the first 2MB of the source-file ---------- files: console.log messages: 6500 priority: normal status: new substatus: new title: ffmpeg with libfaac does not respect -ab on multi-channel audio type: bug _____________________________________________________ FFmpeg issue tracker <[email protected]> <https://roundup.ffmpeg.org/roundup/ffmpeg/issue1278> _____________________________________________________
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