<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hello all,<div><br></div><div>Due to dependency issues, I am running ffmpeg 0.7.16.</div><div><br></div><div>I am writing a custom audio filter for ffmpeg for my research. Naturally I start out with the simplest one for reference, "anullsink" (there are really only 3 in this version anyways - anullsink, anullsrc, and anull). However I seemed to unable to run it it. Running:</div><div><br></div><div># ./ffmpeg -y -i meowmix.mp3 -vf anullsink meowmix.wav</div><div><br></div><div>I am expecting to end up with an audio file meowmix.wav that has nothing. Instead the source mp3 and destination wav files sound exactly the same. I thought I had screwed up and rerun the previous command with "anullsrc". Still the same.</div><div><br></div><div>My last attempt was to add a AV_LOG_ERROR() line in the null_filter_samples() function in asink_anullsink.c. When I run the command again there were no error outputs. It seemed as if the anullsink was never used…</div><div><br></div><div><br></div><div>Any help will be appreciated, thanks!</div><div>
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