FFmpegSource

[MatMaul]

thanks a lot !
I'm waiting for the new version.

[MatMaul]

for the audio I propose an other method to don't have to wait for the decode of the whole audio track at the beginning :

1) as long as the read is linear, we just decode the stream in the same time as we provide it to avisynth and we store it in the cache too.
2) if a seek appears forward, we continue the decoding and storing in the cache to the demanded position then we provide to avisynth and continue like in 1
3) if a seek appears backward, I think we have no choice and we need to decode the whole stream in the cache before go in the decoded position.

it could be a good solution as I think more than 50% of this plugin use is linear.

[Myrsloik]

Now explain how you intend to report the exact number of audio samples at the time the filter is created.

[G_M_C]

Originally Posted by Leak

Are you using LoadCPlugin to load it? (Note the extra "C" in there...)

LOL

Guess i noticed the extra C allright

[MatMaul]

Originally Posted by Myrsloik

Now explain how you intend to report the exact number of audio samples at the time the filter is created.

yep right I didn't think about that
what about a first fast read without store the data in a cache (in the same time than the video indexing perhaps ?) ? but I don't know if this will be significantly faster than decode and store in the cache.

[TheRyuu]

Originally Posted by G_M_C

LOL

Guess i noticed the extra C allright

I don't think you need LoadCPlugin anymore. I thought that was just for one of the "interm" builds.

[Myrsloik]

Parsing without decoding can't be done done for all formats due to variable block sizes (mp3 is fixed, vorbis isn't) so at least for some you'll end up having to decode every single audio frame to get a reasonable number. That and you'd still have to create the cache once you actually want to read the audio...

[Inc]

@Myrsloik

Did you look at the Videolan API? Maybe its more easy to implement that library as "Libavcodec" source as it also (as you know) bases on ffmpeg but maybe gots better Matroska etc etc etc support?!

[Myrsloik]

Version 1.9 released mostly for testing the flac cache stuff. If no one finds it useful I'll remove it in the next version.

Is there any useful documentation at all about libvlc? All I found was completely useless and didn't say anything at all about its limitations.

[MatMaul]

thanks a lot !!
a little bug : the video cache is created even if vtrack = -2

I will test the flac cache tonight.

[Inc]

@Myrsloik

IIRC at videolan.org in its develping section there you can find a documentation.

Regarding ffmpeg .... do you know this one? Maybe one or two included things can be useful for your work: http://www.dranger.com/ffmpeg/

[ajp]

I get an error when I try to use Flac compression... without it works fine.

"CAviStreamSynth: System exception - Access Violation at 0x0, reading from 0x0"

[buzzqw]

be sure to exclude any other filters problem

try an avs with ffmpegsource and your source file, no other filters

are errors present again?

BHH

[ajp]

Yes, in fact I was only using ffmpegsource...no other filters. I removed all other plugins from plugin folder as well, no luck...

FFmpegSource(source="movie.mkv", vtrack=-1, atrack=-1, timecodes="timecodes.txt", vcache = true, accompression = 1, pp="", ppquality = 6, seekmode = 1)

[Myrsloik]

No hints on what the file contains? does it happen with all files but only for you? You're making this far too simple for me and you should absolutely not upload a piece of whatever it is to ftp://upload:upload@mellbin.org/

If someone else is feeling generous and want flac to work for 8 and 24bit audio feel free to upload a small file because I'm too lazy to create that myself.

[ajp]

The file contains one h264 track and one ac3 track. Normally I use NicAC3source for the audio but I wanted to try the complete ffmpegsource solution now that there's a chance to shrink the audio cache a little. I've tried a few different files with the same type of tracks, same error on all of them. I wanted to wait for someone else to comment on how it works but nobody has so...

I can't upload a sample right now, maybe tomorrow...

Thanks for the support..

[MatMaul]

I don't have this problem, but problems with mono file : flac cache is twice bigger than wav cache and the audio is distorted

EDIT : if you want a sample this problem appears with my last mov sample I provided to you, and I have uploaded an other problematic mono file.

[Myrsloik]

New version (1.10). This one actually works.

[ajp]

Wohoo! Tried it, it works!

Any chance of DTS support as well?

[Myrsloik]

DTS support where? I think libavcodec is already supposed to have its own decoder for it. Never tried it myself though.