Hi Steven, I assume the cause is similar to the M4A problem. MPEG DASH uses many tables to hold things together and the contained M4A stream provides even more. Therefore I don't think it's a bug. Some times ago I had some URLs, but they are all dead meanwhile. But I found this one:
http://rdmedia.bbc.co.uk/dash/ondemand/testcard/1/client_manifest-audio.mpd It's not a live stream, but it contains 1 hour of audio. If you copy it with ffmpeg -i http://rdmedia.bbc.co.uk/dash/ondemand/testcard/1/client_manifest-audio.mpd -c:a copy stream.m4a you can see that the memory usage increases up to about 8.8 MB (on Windows 10) until the stream ends. Jörg > 在 2019年10月21日，下午3:50，Jörg Beckmann <joerg.beckm...@scisys.com> 写道： > > Hi all, > > I've written an application to record audio streams continuously for > broadcasters using the FFmpeg libraries. For most stream types it's working > without any problems. One major exception are M4A encoded audio streams, > received from a professional DAB+ receiver. Because of the tables included in > the stream, the used memory of the process increases without any limits until > the process crashes. I know, it's not a bug, it's a feature, but this feature > kills my recorder every few days. My plan is to add an option to the decoder > in mov.c to ignore all tables included in the stream. I would like to send my > changes as a patch to this mailing list. Would you incorporate such a patch > into the source tree? Of course, the default behavior of the decoder should > not change at all and I already read the description of the acceptance > process for patches. > > One of our customers asked to record audio from MPEG DASH streams. My tests > have shown even stronger increasing memory usage for those streams. I didn't > look into the sources for MPEG DASH decoding yet, but it might be the next > candidate to add an option to ignore the tables. Hi Jorg, Can you leave the dash link here, I want check about that, and try to fix it. Thanks Steven _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
