Re: [LAD] Replaygain for video?

2011-12-11 Thread Robin Gareus
On 12/10/2011 11:04 PM, Philipp Überbacher wrote: [..] guess I'd need the whole track anyway before making calculations. Yes, but not all of it at the same time. You can calculate it sequentially. Have a look at https://www.ohloh.net/p/Samplecat it includes a ffmpeg audio decoder, max. gain

Re: [LAD] Replaygain for video?

2011-12-11 Thread Fons Adriaensen
On Sun, Dec 11, 2011 at 12:49:10PM +0100, Robin Gareus wrote: For comparison, ebur128 reported: Loundness-range 19.1 LU; Peak 6.7 LU for the Chaplin movie. and Loundness-range 11.3 LU; Peak 15.3 LU for the youtube video, ?? ebur128 does not report anything called 'Peak' in LU. The

Re: [LAD] Replaygain for video?

2011-12-11 Thread Robin Gareus
On 12/11/2011 01:19 PM, Fons Adriaensen wrote: On Sun, Dec 11, 2011 at 12:49:10PM +0100, Robin Gareus wrote: For comparison, ebur128 reported: Loundness-range 19.1 LU; Peak 6.7 LU for the Chaplin movie. and Loundness-range 11.3 LU; Peak 15.3 LU for the youtube video, ?? ebur128 does

Re: [LAD] Replaygain for video?

2011-12-10 Thread Adrian Knoth
On 12/09/11 21:20, Philipp wrote: Hi! Well, I need a programming project for a university course and this is just one of my ideas that I want to propose to my teacher and prospective teammates. In order to do this I'd like to narrow it down a bit further and especially want to find out

Re: [LAD] Replaygain for video?

2011-12-10 Thread Jörn Nettingsmeier
On 12/09/2011 09:20 PM, Philipp wrote: Question 1: Is there anything better than replaygain that should be used instead? not better as such, but carrying more weight, for sure: the EBU R128 recommendation. fons has presented an implementation at lac 2011:

Re: [LAD] Replaygain for video?

2011-12-10 Thread Philipp Überbacher
Excerpts from Adrian Knoth's message of 2011-12-10 11:38:03 +0100: On 12/09/11 21:20, Philipp wrote: Hi! Well, I need a programming project for a university course and this is just one of my ideas that I want to propose to my teacher and prospective teammates. In order to do this I'd

Re: [LAD] Replaygain for video?

2011-12-10 Thread Adrian Knoth
On Sat, Dec 10, 2011 at 01:10:38PM +0100, Philipp Überbacher wrote: 2. Players like VLC have a normalize function. I don't know if it's one-pass (on the fly, more like automated gain control) or two-pass, but it basically solves your problem of audio levels at playback

Re: [LAD] Replaygain for video?

2011-12-10 Thread Fons Adriaensen
On Sat, Dec 10, 2011 at 03:01:54PM +0100, Adrian Knoth wrote: Huh? I cannot find anything on this website that says normalization is not sufficient: Depends on what is normalised. Peak level has no relation to loudness, so peak normalisation doesn't help. RMS comes as lot closer, RMS after

Re: [LAD] Replaygain for video?

2011-12-10 Thread Philipp Überbacher
Excerpts from Adrian Knoth's message of 2011-12-10 15:01:54 +0100: On Sat, Dec 10, 2011 at 01:10:38PM +0100, Philipp Überbacher wrote: 2. Players like VLC have a normalize function. I don't know if it's one-pass (on the fly, more like automated gain control) or two-pass,

Re: [LAD] Replaygain for video?

2011-12-10 Thread Philipp Überbacher
Excerpts from Robin Gareus's message of 2011-12-10 15:26:11 +0100: Hash: SHA1 Hoi Philipp, On 12/09/2011 09:20 PM, Philipp wrote: Hi there, I could use some advise. You may or may not heard of replaygain. It's reasonably widely used in consumer audio, but sometimes I wish it was

[LAD] Replaygain for video?

2011-12-09 Thread Philipp
Hi there, I could use some advise. You may or may not heard of replaygain. It's reasonably widely used in consumer audio, but sometimes I wish it was available for video as well. By this I mean I wish it was available for the audio part of the video. Well, I need a programming project for a