2016-08-28 8:16 GMT+03:00 Christopher Snowhill <[email protected]>:
> I've noticed that when using these libraries in my own projects, at > least in VGMStream, and with the WMA Pro codec, it is necessary to > perform my own pre-roll when seeking for looping, or else the codec > ramps the audio in from silence on every loop as it catches back up to a > valid state. I currently use either two seconds, or the beginning of the > file if it's less than two seconds prior to the intended seek point, > then discard sample data that is returned by the decoder. > > Is this always necessary by design? Or am I misusing the seeking API? > > I currently use: > > int64_t ts = target_sample * formatCtx->duration / total_samples; > avformat_seek_file(formatCtx, -1, ts - 1000, ts, ts, AVSEEK_FLAG_ANY); > > > _______________________________________________ > Libav-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/libav-user > > I noticed similar behavior with AAC decoder, work around by dropping 1024 decoded samples. (1024 is arbitrary number that worked for me)
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