Avidemux Forum

Quote from: sark on January 11, 2024, 12:45:24 PM

Quote from: Andrew-R on January 11, 2024, 02:03:49 AMHello, all!

I was looking into this problem (minimal reencode of streams with non-all-I videocodecs)

and  today I found patent
https://patents.google.com/patent/US9392279
"Method and system for generating an instantaneous decoding refresh (IDR) picture slice in an H.264/AVC compliant video data stream "

Does it sounds like step in the right direction for smart-copy of h264 files?

That patent was applied for ten years ago. Doubt there is anything new there.

The bottom line is that you cannot reference frames that do not exist. Without major encoder changes, I cannot see how you can get around this.

The current crop of lossless cutting apps work by reencoding the first and last GOP, and concatenating back. The problem is matching the encoded GOP sections parameters to the original unencoded section. infinite craft

I guess the ability to better read, and match those parameters is the way forward. Currently though, I would not trust lossless cutting output that uses this method, even when it appears to work.

Improving the ability to accurately read and match parameters between encoded and unencoded sections of video streams could indeed be a promising avenue for advancing lossless cutting techniques. This may involve advancements in encoder technology, as well as improvements in algorithms for analyzing and processing video streams.

Until significant advancements are made in this area, it's understandable to approach lossless cutting output with caution, as there may still be risks of quality degradation or inconsistencies, even when the process appears to work.

Quote from: eumagga0x2a on April 26, 2022, 01:30:05 AMShould be fixed by commit [core] Support paths with non-ASCII characters in ADM_PathCanonize function on Windows, fix simplify_path(), restrict its scope to file, remove tabs heardle please try a future nightly build.

Thank you very much for your report.

Testing the changes with a future nightly build is a good idea to ensure that everything is working as expected. If you encounter any further issues or have additional feedback, feel free to report them. Thank you for bringing this issue to our attention, and I'm glad to have been able to assist you!

Quote from: jimmyjim on February 10, 2024, 03:10:15 PMIf you are using python (i've never used it), I recommend asking the user for the csv file and reading the csv file into the script: https://www.w3schools.com/python/python_file_handling.asp

Also, if you are using loselesscut to get the timestamps, why not just cut the video with it?

Hi Jimmyjim, thanks for your imformation. As I tried, the tiny python script in Avidemux do not support to read from .csv or .txt files (or maybe only my version can't). And for the second question, Losslesscut is powerful but it doesn't support as more formats as Avidemux. Some of my friends cutting from .ts files, there are sometimes problem with the sounds (not going correctly with the frames).

Quote from: Drakon66 on May 04, 2024, 09:16:28 PMI hope option with reencoding not reduce quality.

- did you try this?:

Quote from: Geo_log on May 01, 2024, 02:58:13 PM1) Append 2nd video;
2) "Video Output" -> "Configure" -> Encoding Mode = Video Size (Two Pass) = Vid1 + Vid2 [Mb];
3) Save video.

How good or bad is the resulting quality?

Installing 2.8.2 build 240324 there is no longer a problem opening files on the network. Thanks!

Please verify that the problem exists with the latest available 2.8.2 nightly build (which is also quite old, I need to update translation files and request a refresh). The 2.8.1 release has become long in the tooth, really ancient.

Just recently upgraded to 2.8.1. A bit late, I know . There was no problem with 2.8.0 to open files from NAS drive on my network (i.e. without mapping to windows letter E: or similar). With 2.8.1 this can no longer be done. "Could not open the file". I can find no setting. It does not matter whether I drag and drop or select File, Open... The question has been asked for another version long time ago https://avidemux.org/smif/index.php/topic,11726.msg61237.html

What is the problem and how do I fix it?

That's understandable.  Just spit-balling an idea.  I'm not as savvy a user as many here, so I have to research tweaking settings when I veer from default(s).  Anyway, new nightly version is awesome.  Thanks again to all those who work  hard on the application.  Peace 

My problem is i have some videos upside down 180 recorded. I hope option with reencoding not reduce quality. Its just coding frame problem.

Quote from: eumagga0x2a on May 01, 2024, 04:31:07 PMAn enhancement to Avidemux to allow user to rotate video preview is possible

how to set that

Quote from: eumagga0x2a on May 01, 2024, 04:31:07 PMPlease make sure that "Post-Processing" is disabled in Avidemux

Quote from: eumagga0x2a on May 01, 2024, 04:31:07 PMlease also consider using a lossless codec (Ut Video or (FF)HuffYUV) for intermediate steps.

Where check this