similar to: CPU saving way to lower quality of Theora stream

Hi, are there any open source DRM implementations for protecting Theora streams over RTP? I only know of the ISMACryp specification which seems to be licence free and so could be used in an open source project. Regards, Franz

I have Ubuntu 10.04 and just installed WINE 1.2 (because it's stable version). I am installing SketchUp 8, and the installer asks what destination folder to install to. It defaults to "C:\Program Files\Google\Google SketchUp 8\" and won't let me change to the Linux format of "home/user/Sketchup" that I think is correct. What do I do? The Wine FAQ states:

Hello, I am very slowly working on the NHW Project.I recently made a speed comparison with x265 and wanted to share it with you. On my processor Intel Core i5-6400, in average the NHW encoder (totally unoptimized) is x10 times faster to encode than x265 (png decoding time removed), in average 30ms vs 300ms for a 512x512 24bit color image, and in average the NHW decoder (totally unoptimized) is

Hello all! i want to use Theora in a little video portal, because its free and open source and i want to contribute some code to get the Java Theora player (Cortado) more feature-rich. But now I'm stuck and hope that someone can point me into the right direction. I have videos stored in several formats (mostly H.264 or MPEG4) and use ffmpeg2theora to recode them on the fly. The recoded

Hi, I run into a problem and I'm not shure what do I misconfigure. I've a B410P ISDN card with bri_cpe signalling and two Openvox (A1200, A800) cards with fxo_ks signalling, all with dahdi drivers. I can receive fax from a public number, but I can't send fax. The CLI says it picks up the line but no dialing. I tried the extension with an analog phone, it works fine, I can dial

Hi, I am very new to Theora, having just started working through the code a few weeks ago. I am working on a requantization tool to reduce bit rates, hopefully on the fly, for some video conferencing work. As I was working through the encoding phase I noticed this line in encode.c: for(ti=_enc->dct_token_offs[pli][zzi];ti<ndct_tokens;ti++){ It's around line 804, but I am

As far as my very limited knowledge goes the Theora video format is less complex than H.264 (High Profile for example). Please correct me if I am wrong. Does this also mean that I can expect that decoding a Theora stream is easier/faster to decode than a H.264 stream with comparable quality / or comparable bitrate? My (very practical) tests do show that it's easier for my computer to

I am looking for a lossless screencast video for I a can test old rle video codecs? --- tom_a_sparks "It's a nerdy thing I like to do" Please use ISO approved file formats excluding Office Open XML - http://www.gnu.org/philosophy/no-word-attachments.html Ubuntu wiki page https://wiki.ubuntu.com/tomsparks 3 x (x)Ubuntu 10.04, Amiga A1200 WB 3.1, UAE AF 2006 Premium Edition, AF 2012

Hello, I understand the encoder provides an option for FEC to provide some protection against packet loss, but I don't understand the details of this arrangement. I'd appreciate answers to the following: * Adding FEC seems to change the encoded audio bit-stream itself, i.e., it doesn't just add additional protection bits, but also changes the encoded bits. This is easy to show by

Hello, I have finally added 2 lower quality settings for the NHW codec: -l1 (-5Ko) and -l2 (-10Ko).I use a quantization of 0.935 and 0.88 (kind of quantization), and I decrease residual coding on the first order wavelet image. I have updated the demo page: http://nhwcodec.blogspot.com/ . These 2 lower quality settings are still experimental.If you could find time, would be interested in any

Dear all, I have a wav file that when I try to encode with the FLAC Frontend, I get "ERROR: unsupported format type 3". When I open it with an audio editor I find it is 44100 / 32 bit. I requantized it to 16 bit using the default dither and then compressed it with FLAC to get a 61 Mbyte file (the original was about 347 Mbyte). Obviously, this altered somewhat the quality, although

I am, as this question will make very obvious, not exactly a guru when it comes to audio under Linux. I'd like to record some prompts using a nice microphone and my Ensoniq sound card, and then convert them to gsm/wav for use with asterisk. What Linux command would I use to a) do the recordings, and then b) convert them to the appropriate formats? I know there are

Hi. I have been talking with Psytel MPEG-4 AAC developer (www.psytel.com) about various compression formats, and to make it short he said that one of the main drawbacks of Vorbis is its vector quantization - it introduces more error then other quantization methods (like non-uniform scalar quantization, if I got it right), probably used in AAC and other similar codecs. I know vector quantization

when I try to run pepakura viewer[1] it crashs [1] http://www.tamasoft.co.jp/pepakura-en/download/viewer.html the program reports DIB Init Failed Render Context Create Failed i am running wine-1.2.2 on ubuntu 10.04 tom at tom-laptop:/media/disk/wine/drive_c/Program Files/tamasoftware/pepakura3en/viewer$ wine ./pepakura_viewer3.exe wine: cannot find

Hello, Just a quick message, I have improved the -l3 lower quality setting.I have increased the quantization to 0.8 and decrease a little the denoising, and so to save 1Ko in average, I have added a 8x8 block variance analysis.Blocks that have a low variance are averaged to save bits.The -l3 lower quality setting is a little better now. For the -h3 higher quality setting, yes for now I do not

Comments? ---------------------------------------- "Mark Taylor" <mt@sulaco.org> wrote: [...] > This is related to one minor objection I have to vector quantization > based codecs like Vorbis and the MPEG4 VQ codec: they do not compute > the quantization noise during the encoding process. The choice of > codebooks (use a big codebook: low quantization noise, use a

(Disclaimer: this is not an LPC vs. LSP question) After looking at the Vorbis code I was wondering why you were using LSP to quantize the spectral envelope instead of simply quantizing the cepstrum (DCT(log(envelope))) or modified cepstrum (DCT(envelope.^alpha)). To me it seems like when the information is already in the frequency domain, there's no need to go back to LPC. Also, I think a DCT

Hi, After a quick read of the Theora spec, I became curious about the possibility of fast quality reduction of Theora videos. The idea is to decode through the Huffman and reverse prediction steps, and then to truncate the coefficients and reencode. My questions are: * Is this a reasonable way to reduce the quality and bitrate of a stream? Will it be comparable in quality to a complete

I have some data measured with a coarsely-quantized clock. Let's say the real data are q<- sort(rexp(100,.5)) The quantized form is floor(q), so a simple quantile plot of one against the other can be calculated using: plot(q,type="l"); points(floor(q),col="red") which of course shows the characteristic stair-step. I would like to smooth the quantized

Hello all. In the shower the other day (where most of this sort of musing gets done, eh?) I was thinking about graceful degradation of audio signals. Let me apologise in advance if these are elementary concepts or if I demonstrate a complete lack of insight -- I don't rate even a dabbler status in the area of audio codecs. Anyway: If we have a 128kbs signal coming down a *udp* channel with