Checklist
- ✅ I have searched the issues page for any duplicate issues open or closed and confirmed that this bug has not been reported before.
- ✅ I have tested the issue with the current build.
- ✅ I have attached log files, uploaded sample data, and commands used so that the issue can be easily reproduced by the developers.
Bug Description
Transferred Super Betamax HiFi (SuperBeta HiFI) tapes have sporadic (what appear to be) dropouts. ld-analyse does not recognize these as dropouts, however. These dropouts are missing when tapes are viewed via composite video, so I do not think those dropouts are part of the tapes. Dropouts are also visible in exported video. These can be quite distracting, especially if they show up a few seconds at a time.
Steps to Reproduce
- Download sample data from Drive at the following link: https://drive.google.com/drive/folders/1g9GJa9Hs5iVW52Q4NArH4vorsy3tn5rS?usp=share_link
- Run
decode.py vhs --debug --tape_format superbeta --system ntsc --y_comb -f 40 --threads 3 --recheck_phase [FLAC FILE].flac [OUTPUT NAME]
- View TBC file in ld-analyse and search for white horizontal streaks.
Expected Behaviour
The decode tool seems to be decoding everything just fine. The only issue is those sporadic dropouts.
Actual Behaviour
Ideally, the only dropouts that should be in the video are dropouts from the tape itself, which is expected due to the age of the tapes. However, these dropouts -- based on testing -- do not seem to originate from the tape since they are not visible when the tape is played back via composite video.
Environment
- Decode version: 0.3.7
- Operating System: Linux Debian 13.0
- Hardware Used: AMD Ryzen 3 3100 4-Core, 32GB RAM, 2TB SSD; Tapes transferred with Sony SL-HF3000; FM captured via CX White capture card
Additional Information
Screenshots and sample data can be found in the Drive link above.
Is it related to tbc-video-export?
No
Checklist
Bug Description
Transferred Super Betamax HiFi (SuperBeta HiFI) tapes have sporadic (what appear to be) dropouts. ld-analyse does not recognize these as dropouts, however. These dropouts are missing when tapes are viewed via composite video, so I do not think those dropouts are part of the tapes. Dropouts are also visible in exported video. These can be quite distracting, especially if they show up a few seconds at a time.
Steps to Reproduce
decode.py vhs --debug --tape_format superbeta --system ntsc --y_comb -f 40 --threads 3 --recheck_phase [FLAC FILE].flac [OUTPUT NAME]Expected Behaviour
The decode tool seems to be decoding everything just fine. The only issue is those sporadic dropouts.
Actual Behaviour
Ideally, the only dropouts that should be in the video are dropouts from the tape itself, which is expected due to the age of the tapes. However, these dropouts -- based on testing -- do not seem to originate from the tape since they are not visible when the tape is played back via composite video.
Environment
Additional Information
Screenshots and sample data can be found in the Drive link above.
Is it related to tbc-video-export?
No