Etienne Posted January 5, 2019 Share Posted January 5, 2019 Some Channels stating broadcasting with this new codec... and no sound in DVBViewer. Here under Transedit capturing. Will we have chance to have soon settings for Ac4 audio codec in Directx settings ? Quote Link to comment
Griga Posted January 5, 2019 Share Posted January 5, 2019 Up to now there is no known DirectShow AC4 decoder and no DirectShow AC4 specification (particularly no AC4 MEDIASUBTYPE GUID). So ATM there is nothing that we can do about it. Quote Link to comment
Etienne Posted January 5, 2019 Author Share Posted January 5, 2019 Ok thanks Griga for quick response. It is true that there are experimental broadcastings ATM. But some TV / Boxes are compatibles. PC is a other subject, perhaps some royaltiies will come, it's Dolby machine... Quote Link to comment
Radioman Posted January 23, 2019 Share Posted January 23, 2019 I have question related to this proposed AC4 audio: If I record this Test UHD 3 stream (.ts) with DVBViwer it only shows video, when I analyze it. No audio? If I look at source properties the audio state is connected (PID 230). BTW the audio plays fine if I watch this channel live with my UHD TV. Quote Link to comment
spaceship9876 Posted January 27, 2019 Share Posted January 27, 2019 Is this helpful at all to get AC-4 working: https://github.com/DolbyLaboratories/dlb_mp4base Quote Link to comment
Griga Posted January 28, 2019 Share Posted January 28, 2019 vor 12 Stunden schrieb spaceship9876: Is this helpful at all to get AC-4 working No. As already mentioned, a DirectShow decoder is required for DVBViewer. However, since we don't develop decoders, it comes down to an external solution, e.g. an open source implementation, e.g. in FFmpeg, that can be inherited by LAV Filters. native support in Windows by the MS audio decoder a commercial decoder, e.g. from MainConcept or Cyberlink, for which you have to pay. Quote Link to comment
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