Opened 5 years ago
Closed 5 years ago
#8098 closed defect (duplicate)
DTS audio to .mp4 sets wrong audio Channel(s) to 2
| Reported by: | Dameos | Owned by: | |
|---|---|---|---|
| Priority: | normal | Component: | undetermined |
| Version: | unspecified | Keywords: | |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | no | |
| Analyzed by developer: | no |
Description
When writing a DTS audio track to a .mp4 container ffmpeg reduces the audio channels to 2 instead of keeping the original channels.
Command:
ffmpeg -i C:\ffmpeg\audio.dts -map 0:0 -c copy C:\ffmpeg\audio.mp4
General Complete name : C:\ffmpeg\audio.mp4 Format : MPEG-4 Format profile : Base Media Codec ID : isom (isom/iso2/mp41) File size : 2.26 GiB Duration : 2 h 28 min Overall bit rate : 2 173 kb/s Writing application : Lavf58.31.104 Audio ID : 1 Format : DTS Format/Info : Digital Theater Systems Format profile : MA / Core Codec ID : mp4a-A9 Duration : 2 h 28 min Bit rate mode : Variable / Constant Bit rate : Unknown / 1 509 kb/s Nominal bit rate : 2 170 kb/s Channel(s) : 2 channels Channel(s)_Original : 6 channels Channel positions : Front: L C R, Side: L R, LFE Sampling rate : 48.0 kHz Frame rate : 93.750 FPS (512 SPF) Bit depth : 16 bits Compression mode : Lossless / Lossy Stream size : 2.26 GiB (100%) Default : Yes Alternate group : 1
As you can see all the audio stream data is still being written to the mp4 container, but Channel(s) is reduced to 2.
Change History (2)
comment:1 by , 5 years ago
comment:2 by , 5 years ago
| Component: | avcodec → undetermined |
|---|---|
| Keywords: | dts channel removed |
| Resolution: | → duplicate |
| Status: | new → closed |
| Version: | 4.2 → unspecified |
Looks like ticket #3023
Note:
See TracTickets
for help on using tickets.
To make this valid ticket provide ffmpeg output of both input and output file.