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# Known issues, limitations, troubleshooting, FAQ
# FAQ
## Cutting times are not accurate!
- **Can LosslessCut crop, resize, stretch, mirror, overlay text/images, watermark, blur, redact, re-encode, speed-up/slow-down, create GIF, slideshow, burn subtitles, color grading, fade/combine/mix/merge audio tracks or change audio volume?**
- No, these are all lossy operations (meaning you have to re-encode the file), but in the future I may start to implement such features. [See this issue for more information.](https://github.com/mifi/lossless-cut/issues/372)
- Can LosslessCut be batched/automated using a CLI or API?
- While it was never designed for advanced batching/automation, it does have a [basic CLI](./cli.md), and there are a few feature requests regarding this: [#980](https://github.com/mifi/lossless-cut/issues/980) [#868](https://github.com/mifi/lossless-cut/issues/868).
- Is there a keyboard shortcut to do X?
- [See this issue.](https://github.com/mifi/lossless-cut/issues/254)
- When will you implement feature X?
- I have limited time and I have a lot of projects to work on, so I cannot promise any timeline. I will usually prioritize the issues with the most likes, [see here for a list of the most popular issues](https://github.com/mifi/lossless-cut/issues/691).
# Known issues, limitations, troubleshooting
## Cutting times are not accurate
Start cut time will be "rounded" to the nearest **previous** keyframe. This means that you often have **move the start cut time to few frames after** the desired keyframe.
- Lossless cutting is not an exact science. For some files, it just works. For others, you may need to trial and error depending on the codec, keyframes etc to get the best cut. See [#330](https://github.com/mifi/lossless-cut/issues/330)
@ -30,18 +41,6 @@ MPEG TS (`.mts`/`.ts`) files have a tendency to be a bit problematic. It may hel
## Smart cut
Smart cut is experimental, but if you're having problems, check out [this issue](https://github.com/mifi/lossless-cut/issues/126).
## FAQ
- **Can LosslessCut crop, resize, stretch, mirror, overlay text/images, watermark, blur, redact, re-encode, speed-up/slow-down, create GIF, slideshow, burn subtitles, color grading, fade/combine/mix/merge audio tracks or change audio volume?**
- No, these are all lossy operations (meaning you have to re-encode the file), but in the future I may start to implement such features. [See this issue for more information.](https://github.com/mifi/lossless-cut/issues/372)
- Can LosslessCut be batched/automated using a CLI or API?
- While it was never designed for advanced batching/automation, it does have a [basic CLI](./cli.md), and there are a few feature requests regarding this: [#980](https://github.com/mifi/lossless-cut/issues/980) [#868](https://github.com/mifi/lossless-cut/issues/868).
- Is there a keyboard shortcut to do X?
- [See this issue.](https://github.com/mifi/lossless-cut/issues/254)
- When will you implement feature X?
- I have limited time and I have a lot of projects to work on, so I cannot promise any timeline. I will usually prioritize the issues with the most likes, [see here for a list of the most popular issues](https://github.com/mifi/lossless-cut/issues/691).
## Linux specific issues
- If you get an error like `FATAL:setuid_sandbox_host.cc(157)] The SUID sandbox helper binary was found, but is not configured correctly. Rather than run without sandboxing I'm aborting now.`, try to run it as `./lossless-cut --no-sandbox`. See [#258](https://github.com/mifi/lossless-cut/issues/258)
@ -54,7 +53,7 @@ Smart cut is experimental, but if you're having problems, check out [this issue]
- Where did the `.exe`/`.zip` downloads go? I decided to stop distributing exe and instead just 7zip, due to the [problems that the exe download was causing and the large size of zips.](https://github.com/mifi/lossless-cut/issues/1072#issuecomment-1066026323)
- [APPX is not signed and **does not work**.](https://github.com/mifi/lossless-cut/issues/337) Please use [7z package](https://github.com/mifi/lossless-cut/releases/latest/download/LosslessCut-win-x64.7z) instead.
## Cannot find an answer?
## Still cannot find an answer?
If any other problem please search for [existing issues](https://github.com/mifi/lossless-cut/issues) before you file an issue here on GitHub. You can check the developer tools for any errors or clues. Menu: `Tools` -> `Toggle Developer Tools`.
Also you are welcome to hang out on [Discord](https://discord.gg/fhnEREfUJ3) 🤗