Where can I find the forum and homepage of Lav Filters?

[Stears555]

Hello guys!

Where can I find the forum and homepage of Lav Filters? I would like to report some bugs.

Thank you for your reply!

[Marsia Mariner]

Thread @ doom9.org:

https://forum.doom9.org/showthread.php?t=156191

Page @ GitHub:

https://github.com/Nevcairiel/LAVFilters/issues

[DB83]

AFAIK the correct place is the Doom9 forum which you access as 'Visit Developer's site' from the generated link on your OP

[Stears555]

I didn't get the promised registration e-mail... I tried it again with an other address and account name...but the result was the same... no e-mail. The style of that webpage reminds me of the early 2000s... Maybe they use stone-age servers too...

[Stears555]

This is the Changelog of LAV Filters:

Version history / Release notes / Changelog

"0.70.0 - 2017/xx/xx
LAV Splitter
- Fixed: Certain MP4/MOV didn't play or seek correctly in recent versions of LAV Splitter
- Fixed: HEVC in MP4 without PTS timestamp is being signaled appropriately"


__________________________________________________ __

But they forget to refit this exact problem in MPEG transport stream (MPEG-TS, MTS or TS)

Can somebody write to fix it in their forum?
Thank you for your reply!

[sneaker]

Did you try the latest nightly? Do you have a sample? A report without a sample is useless. Or better yet just report via github if you can't get registered on doom9.

[Stears555]

Did you try the latest nightly? Do you have a sample? A report without a sample is useless. Or better yet just report via github if you can't get registered on doom9.

Here is the sample: http://sendgb.com/KVIAnhCEi7P The plot: Three common wall lizards try to eat an earth-worm.

The video is a progressive Segmented Frame video, so please turn of the deinterlacer or automatic deinterlacer, because it can half the spatial resolution, thus degrading the video. I use Potplayer, and I set my mouse scroll to frame step back or forward. When I use the LAv Filters decoder and LaV splitter the frame-step (especially back) doesn't work really. But they solved this problem with Mp4 and MKV format, as their changelog wrote. So when I transform the video into mp4 or mkv, the problem doesn't exist anymore, it is fine. That's why I said, they must take a look to the transport stream formats, because the problem remained there. It is especially more problematic in really long videos. I uploaded only a very small sample.

[sneaker]

But they solved this problem with Mp4 and MKV format, as their changelog wrote.

The changelog says some (not further specified) playback and seeking problems in mp4 were fixed, not necessarily a problem like you are describing. IIRC it was about reordering not having been saved correctly (missing CTTS atom). I don't really see any relation to your problem not least because it only affected HEVC while your sample is AVC.

So when I transform the video into mp4 or mkv, the problem doesn't exist anymore, it is fine. That's why I said, they must take a look to the transport stream formats, because the problem remained there. It is especially more problematic in really long videos. I uploaded only a very small sample.

Some time ago LAV author said:

MPEG-TS is generally not a format you should expect "perfect" seeking on, because the format itself has basically no seeking support. Even finding the appropriate timecode in the file is already a slow process, and with broadcast streams can even be really annoying (ie. with wrap-around).

https://forum.doom9.org/showthread.php?p=1803567#post1803567

[Stears555]

But they solved this problem with Mp4 and MKV format, as their changelog wrote.

The changelog says some (not further specified) playback and seeking problems in mp4 were fixed, not necessarily a problem like you are describing. IIRC it was about reordering not having been saved correctly (missing CTTS atom). I don't really see any relation to your problem not least because it only affected HEVC while your sample is AVC.

So when I transform the video into mp4 or mkv, the problem doesn't exist anymore, it is fine. That's why I said, they must take a look to the transport stream formats, because the problem remained there. It is especially more problematic in really long videos. I uploaded only a very small sample.

Some time ago LAV author said:

MPEG-TS is generally not a format you should expect "perfect" seeking on, because the format itself has basically no seeking support. Even finding the appropriate timecode in the file is already a slow process, and with broadcast streams can even be really annoying (ie. with wrap-around).

https://forum.doom9.org/showthread.php?p=1803567#post1803567

Hello!

I mean this line:
"- Fixed: Certain MP4/MOV didn't play or seek correctly in recent versions of LAV Splitter"

Many other decoders have not such a problems with the Transport streams, but LAV filters have. I clearly remember old LAV filters have worked great with Transport streams even 1 or 2 years ago, so it means, there is a problem with the newer versions. Interestingly, when I transformed them to mkv or mp4 with direct-stream-copy mode, the problem has disappeared. Isn't it interesting? LAV filters works a bit better with other splitters. That's why I said, there is a problem with the LAV splitter.

Thank you for your reply!