Note on flags: The -c:a copy command tells FFmpeg to copy the audio stream bit-for-bit without compressing it or altering the Dolby metadata. Troubleshooting Common Repack Issues
Issue 1: My AV Receiver shows "Dolby Digital" instead of "Dolby Digital Plus" dolby digital plus test file repack
: Some conversion tools can repackage E-AC-3 bitstreams into standard AC-3 (640 kbps) for older A/V receivers without losing significant quality, avoiding the "transcode to PCM" trap that introduces artifacts. Note on flags: The -c:a copy command tells
Issue 3: Receiver Displays "Dolby Digital" Instead of "Dolby Digital Plus" dolby digital plus test file repack
(often encoded within E-AC-3 for streaming compatibility).
The repackaging process is defined as a "remux" operation—extracting data without decoding/re-encoding—to preserve the original bitstream.