Questions tagged [ac3]

Audio Codec 3 or Advanced Codec 3 or Acoustic Coder 3 - names used for Dolby Digital audio compression technologies.

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Convert MKV with DTS sound to MP4 video with AAC or AC3 audio

I've got a 4.3 GB 720p movie and want to convert this MKV with DTS sound to MP4 video with AAC or AC3 audio. I sometimes get: ffmpeg: unrecognized option '-c:v' …and: aac unrecognized ¬and other ...
dale's user avatar
  • 259
7 votes
2 answers
5k views

How can I split the 5.1 audio channels from an AC3 file into individuals streams (preferably on a Mac)?

I have a file that I've pulled from a DVD that is apparently in AC3 5.1 format. The extension is .AC3 and it opens an plays in QuickTime, VLC etc. What I want is each individual channel in a separate ...
Drarok's user avatar
  • 246
4 votes
0 answers
7k views

How to remap channels of AC3 stream within .mkv or .mp4? (ffmpeg, 3f2m/lfe - > 3f2r/lfe)

So this is my problem, I've backed up quite a number of DVDs and a few Blu-Ray discs to .mkv files for archival purposes, and for my plex server. I used: x264 for video ac3 for audio (for ...
Vlad's user avatar
  • 41
2 votes
1 answer
5k views

How to concatenate audio files in Adobe Audition 3?

I have about 200 AC3 files that I want to import into Adobe Audition 3 using the AC3Filter plug-in. If I select all files and drag to session area, I get one per track, but I want them all ...
WilliamKF's user avatar
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2 votes
1 answer
3k views

Convert movie audio from ac3 to mp3 ? (no video conv.) [duplicate]

Possible Duplicate: Convert mp4 to mp3 Hello everybody, Could you please suggest me a quick way to convert just the audio of movies from AC3 to MP3 ? I would like to get a new Avi with the same ...
iAsk's user avatar
  • 759
2 votes
0 answers
556 views

ffmpeg does not capture ac3 audio from RTSP stream

I am trying to capture video and audio from an RTSP stream using ffmpeg-4.1.3-amd64-static. The stream is produced by VLC, and contains H.264 video and AC-3 audio. I can play the stream using VLC and ...
Richard Hussong's user avatar
1 vote
2 answers
523 views

Converting AC3 audio to AAC in Audacity

I have a number of Music Videos I am converting from DVD to MP4. Unfortunately I find the audio levels are all different. It is easy enough to get similar audio leves by using Audacity but would ...
Tekno Geekz's user avatar
1 vote
2 answers
3k views

How to AC3-encode audio and send it through HDMI on Win10?

For reasons°, I have my PC plugged into my TV via HDMI, which is connected to my AV receiver via optical cable. Since my TV is only detected as 2 channel device, and stuff like games usually don't ...
DanMan's user avatar
  • 223
1 vote
0 answers
1k views

MPC-HC + AC3filter playing too fast with DTS-HD MA

Video plays too fast, as if fast forward was enabled. It used to happen with VFR MKV video, and was fixed with View > Render Settings > Presentation > Enable Frame Time Correction. This week this ...
Hikari's user avatar
  • 307
0 votes
1 answer
3k views

Re-encode AC3 5.1 audio with variable bitrate using FFmpeg

Does the AC3 audio format support variable bitrate encoding? If so, is it possible to use FFmpeg's -vbr option to achieve that? I'd like to avoid converting from 5.1 to a 2-channel stereo because I'...
GetFree's user avatar
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0 votes
1 answer
9k views

Convert Audio 5.1 to Stereo [closed]

I am having issues playing the MKV video files I download on my friends TV, the TV shows I download have been playing just fine with no issues. The video portion of the files play flawlessly however ...
Woz's user avatar
  • 303
0 votes
1 answer
2k views

With FFmpeg, how do I normalize AC3 to stereo WAV file?

I'm converting 5.1 AC3 file to stereo WAV with FFmpeg: ffmpeg.exe -i "D:\Project\AC3.ac3" -ac 2 "D:\Project\WAV.wav" How do I normalize the file? Is there a way to know how much I can increase the ...
ClearSky's user avatar
0 votes
1 answer
202 views

Some audio tracks become vorbis after encoding with ffmpeg

I encode a file with several audio tracks. Some of them must be copied (already AC3), some of them must be encoded (DTS to AC3). But tracks 0:a:8 and 0:a:9 become "vorbis" (5.1 and 2.0 ...
Malefic Max's user avatar
0 votes
1 answer
418 views

Downsample 3 Dolby Digital channels (Front, Center, Right) to stereo?

I've got a Dolby Digital (ac3) file and I'm able to extract channels one by one like this: -map_channel 0.0.4 -channel_layout mono -sn -b:a 128k -ac 1 For example, this extracts the back left ...
Jxx's user avatar
  • 103
0 votes
1 answer
247 views

Convert MPG w/ AC3 audio to something else - on a Mac

I'm helping with a small volunteer media team, and they have several .mpg videos that don't appear to have sound when played in QuickTime, iTunes, Real Player, etc, on the local Mac machine. I was ...
anonymous coward's user avatar
0 votes
1 answer
30 views

Converting audio tracks only in mkv files to AC3

I have an LG CX TV. The internal video player does not recognise DTS audio format. I'd like to be able to play MKV files (which might have DTS audio tracks) from an external USB device. I was looking ...
Alastair's user avatar
0 votes
1 answer
134 views

Muxing AC3 with x264, timing & seeking challenges

I'm attempting to generate a downloadable video with 5.1 surround to put on a website of a concert I worked on. Ideally with maximum compatibility with things like QuickTime & Plex. I have a ...
Caleb's user avatar
  • 1
0 votes
1 answer
175 views

ffmpeg - replace the Center channel on a 5.1 AC3 without re-encoding

Is it possible replacing the Center channel on a 5.1 AC3 without re-encoding? Thanks!
buddhabas's user avatar
0 votes
1 answer
220 views

How to use FFmpeg to modify metadata downmix levels of AC3 file

I'm trying to use FFmpeg to modify a metadata called "downmix levels" of an existing AC3 file (Dolby Digital surround sound file) I have tried with at least a million different combinations ...
KenJes's user avatar
  • 1
0 votes
0 answers
52 views

Movies are corrupted/ending in the middle

I watch movies in Media Player Classic Home Cinema. This is the third movie that the same issue happens. In the middle of it, the movie stops. When I go see what happened, it just jumps to the end ...
Hikari's user avatar
  • 307
0 votes
1 answer
2k views

How to play DTS audio file in Sony Bluray player?

I have a Sony Bluray Player Model: BDV-E3200 (Asian). I have 5.1ch audio files with .dts extension (DTS format) in my PC. How to play the .dts audio files on the bluray player? I have these methods ...
Harish R's user avatar
0 votes
1 answer
66 views

Which player can play AC3 tracks in a video?

I have a movie in avi format and its sound part in ac3 format. Which player can play my 'custom' sound with a movie?
Roman's user avatar
  • 123
0 votes
1 answer
4k views

Mplayer no sound when playing some movies

Ok, that's a bit of a strange problem, that somehow crept into my system. It used to work fine. Here is the problem as far as I can identify it. When I try to play certain video files with mplayer, ...
Ivan Peevski's user avatar
0 votes
1 answer
497 views

Flash Media Server and Surround 5.1

Is it possible to get a flash application streaming surround 5.1 sound? Does Flash Media Server support Surround sound ac3 encoded 5.1 dolby surround, and if so, can i stream it via rtmp stream to a ...
user avatar
-1 votes
1 answer
1k views

How to convert audio to HE-AAC?

How to convert an .eac3, .ac3, .aac or any similar audio file to HE-AAC? (6 channel-192/224/244kbps)
Akash Khan's user avatar
-1 votes
1 answer
7k views

Converting a MKV file with DTS MA audio to AC3 5.1 (With no loss in video)

I have a linux server on which i need to do this. I have a video MKV video file with AVC video and DTS MA audio, i need to convert this to a file with AC3 5.1 Audio with no loss in video and as ...
BalaK's user avatar
  • 99