![]() The patch was tested extensively for all channel layouts in PCE table which include all the channel layouts in channel-layout.h (ln 85 - 111), (except AV_CH_LAYOUT_STEREO_DOWNMIX ) The patch adds that table to the decoder for PCE which are not in the table, the patch adds an algo to assign a ffmpeg layout. In the case of PCE written by the native aac encoder, there exists a correspondence though of avutil channel layouts to PCE. The aac decoder decodes PCE correctly but since avutil channel layouts are obviously not part of the spec there is no pre-defined one to one correspondance between ffmpeg channel layouts and any PCE.Īt the moment the decoder makes educated guesses for translating PCE to avutil layouts. So searching more around this issue I found the following: ![]() I’ll try anything, but I’m hoping someone that experienced this will see it and respond. Help me Obi-Wan Kenobi, you’re my only hope. Same results with vocals shifting to the right channel. I tried systematically uninstalling and reinstalling everything I use, to the point that I even reinstalled Windows 10. What’s odd, and why I think it’s not a Windows 10 issue, is because I didn’t change anything on my system, but I do have Windows set to auto-update. I found this post from two years ago that describes the same exact situation. I’ve been using EVERYTHING the exact same. However, at some point in the last two or three months, the very same process has been acting strange by shifting the voices in movies to the right channel. This batch is working completely as expected. I batch converted my movie collection to HEVC/AAC (around 1200 movies) over a period of about three weeks back in May and June and it went perfectly. I have been using FFmpeg for a while and it’s been great. Will update - but if anyone has any additional thoughts, I'd appreciate them. ![]() I'm seriously thinking this is a Windows 10 thing because at this point, it's the only variable I haven't confirmed. It is moving the voices to the right channel and there is literally no reason it should be. It has to do with converting a 5.1 channel surround. There was a point earlier Sunday night I thought it was resolved, but it wasn't. I'll update this post if I ever figure it out.Į: This issue is still unresolved. I would SWEAR that something happened but no one else has reported it here, so apparently whatever happened must've involved something I can't figure out at this time. I don't consider this resolved because it's still a problem under unclear circumstances that causes this to happen (I even went back and re-encoded a straight rip movie I encoded 5 months ago with my "still the same" process/software/OS and it yielded the EXACT SAME PROBLEM - audio shifting to the right channel. If anyone stumbles across this post again, these are the alternative ffmpeg string solutions that worked for me: AC3 is another term for Dolby Digital, so it's still great quality and it works with my setup. So to conclude this, I've decided to explain that instead of driving myself crazy with WHY, I choose to accept that using AC3 as the audio codec does not cause this audio shift (that took me a while to get to, but suffice it to say that AC3 is a more controlled algorithm whereas AAC is more like the wild wild west). The end result is the same: it's not working for me now. What I don't understand is why it didn't do that when I batch converted 900+ movies about 5 months ago. 9.Resources: Third Post | Second Post | First Post | Audio | Quadro RTX 4000 | Multi-stream HackĮ2: So it appears that this is kind of a known issue all over the web: that DTS to AAC when converting a 5.1 audio can go haywire.No referral / affiliate links, personal voting / campaigning / funding, or selling posts Welcome to /r/Plex, a subreddit dedicated to Plex, the media server/client solution for enjoying your media! Plex Community Discord Rules Latest Regular Threads: No Stupid Q&A: Tool Tuesday: Build Help: Share Your Build: Submit Troubleshooting Post Files not showing up correctly? ![]()
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