VideoLAN Wiki - User contributions [en]

X264 TODO

2011-03-31T01:07:03Z

Simonhorlick: Adaptive MBAFF + slice-max-size complete

This page contains an incomplete list of things available in x264 for you to do. It's organized into sections covering various parts of x264.

Some useful resources: [http://www.x264.nl/developers/Dark_Shikari/?dir=./src Dark Shikari's pile of junk], [http://akuvian.org/src/x264/ Pengvado's pile of junk].

If you're interested in doing any of this, drop by #x264dev on Freenode IRC. There are no experience or educational requirements for doing any of this, though you are expected to know how to code.

Bolded features may have companies willing to sponsor or provide bounties. This is not complete either; just because it's not bolded doesn't mean there aren't resources out there. If your company is interested in offering a bounty, drop by IRC.

===Motion Estimation===
* Sequential elimination (SEA), used for exhaustive search, might be more generally applicable to algorithms like UMH, by letting us skip a lot of SADs. The downside is we won't be able to use SAD_X4 anymore.
* (T)ESA is currently wrong for motion searches done on weightp duplicates. This effect is miniscule, but it still should be fixed.
* Hierarchical motion estimation might be a useful way to catch very long motion vectors without the cost of UMH or ESA. It might also help regularize motion.
* Somehow take into account the effect of motion vector decision on future blocks.
** Hierarchical motion estimation
** Approximations from lookahead MVs
** Iterative ME (as per Snow)
** Trellis motion estimation
* We don't need to check all 11 predictors all the time for 16x16 fullpel motion search.
** But how do we know which ones we can afford to skip, and when?
** Xvid and libtheora have algorithms for this, but the former's is almost surely 100% useless and the latter doesn't seem impressive either.
* libtheora does fullpel motion estimation on the source pixels instead of decoded pixels. Does this give a better starting point for the subpel search and discourage "weird" MVs?
* With extremely fast encoding settings (subme 0), can we rip off lookahead MVs instead of doing a real search?
* Try sub-8x8 partitions in B-frames. Is it at all useful?
* Try bidir motion estimation for fullpel. That is, considering L1's MV when doing L0 (or vice versa). Xvid does this. How much does it help?
* Fullpel chroma ME?
** For TESA?

===Intra Analysis===
* Make the early terminations smarter. Currently they're just hacks -- some statistical analysis might be useful.
* SAD (subme 1) i8x8 vs i4x4 decision is a bit bad. Can it be improved without significant speed loss?

===Mode Decision===
* Can we find more ways to skip more motion searches in multiref?
* On extremely fast encoding settings, fast skip is actually kind of slow. But anything dumber (e.g. SAD) is completely useless. Is there some better balance that can be achieved here?
* See the TODOs for deblock-aware RD in common/deblock.c.
* Is there a faster way than SA8D/SATD to do 8x8dct vs 4x4dct mode decision? At very fast settings, the time this uses is nontrivial.
* Is there a faster way than RD to do 8x8dct vs 4x4dct mode decision that's still better than SATD? RD takes over an order of magnitude more time than SATD, so it might be useful to have something in the middle.
* Is there some value to swapping the mode decision metric from SATD to SA8D if we think that the macroblock will use 8x8dct? [http://akuvian.org/src/x264/x264_dct8_guess.diff This has been tried before], but only helped if our guess was extremely good (better than we could get in reality).
* With trellis 2, can we skip most of CABAC and CAVLC bit cost calculation?
* How about a "brute force" mode decision that takes no shortcuts (no early ref termination in p8x8, no SATD thresholds, etc)?

===Psy===
* Psy-RD is a hack. It works, but it's a hack. If you apply QNS with Psy-RD as the metric, it goes way overboard and gives terrible results. This means that Psy-RD only works because normal mode decision is limited in the way it can modify the image to better suit the metric. Is there a way to make it better?
* Should RD be linear at all? Perhaps we should weight more heavily against low quality blocks and also try to ignore minuscule distortion that viewers can't see.
* Psy-trellis (and maybe psy-RD?) are too strong at very high QPs.
* Psy-trellis should be merged with Psy-RD. There are patches for this, but they probably won't be committed until psy-RD itself is fixed.
* RD should take into account local variance.
* Lambda should be varied on a per-DCT-block basis instead of a per-macroblock basis.
* Lambda should be picked independent of quantizer (i.e. with greater precision).
* Classic problem: a block is mostly high complexity but has a small area of low complexity. How do we judge whether that area is important? Good example: sharp text on background with film grain; grain gets blurred out because of the text.
** If we think it's important all the time, we ruin the quality of many clips that rely on raising complexity on edges (Touhou).
* Should motion estimation lambda be as high as it is at very high quantizers? There's some value to capturing "true motion"...
* Macroblock tree correlates pretty well with visual perception in that its concept of a "high complexity" matches well with the visual concept. Except for local illumination changes. Talk to Dark Shikari for a patch.

===Lookahead===
* '''Lookahead should be multithreaded, either by splitting the frame (sliced threads) or running multiple frame analysis calls at once.'''
* Temporal MV predictors in lookahead? There's a patch for these somewhere, but they biased heavily in favor of B-frames, likely by improving the motion search.
* Should lookahead use variable lambda based on quantizer (esp. due to adaptive quant)? If so, should it take into account estimated ratecontrol quantizer, too? If so, how?

===Quantization===
* CAVLC "trellis" is a hack. It works, but it's a hack. Make it better. See the TODOs in encoder/rdo.c.
* There's room for something between trellis and deadzone in terms of complexity. libvpx has a good example -- it biases towards zero-runs in its "medium speed" quantizer. This can't be SIMD'd easily, but is still vastly faster than trellis. A nonlinear quantizer (be more likely to round up larger coefficients) might also be useful.
* Floyd-Steinberg for quantization? Try pushing quantization error to nearby DCT coefficients. Should this go from high to low or low to high?
* Energy-preserving quantizer -- maintain L1 (or maybe L2? I'm not sure) energy. Should we maintain it in the spatial domain (post-iDCT) or residual domain? Probably the former.
* Decimation is currently just a ripoff of the JVT recommended algorithm. Can we do this more optimally? With RD?

===Transform===
* Analyze the error characteristics of the fDCT. Is there any way to make it more accurate without much speed loss? Particularly at extremely low quantizers, this might help.
* Before forward transform, run a "blocking filter" that acts as the approximate inverse of the deblock filter. See [http://akuvian.org/src/x264/Shwang_loopfilter_thesis.pdf this paper].

===Interlacing===
* Lookahead currently blend-deinterlaces to get the lowres. Is this a good idea? Is there something better that isn't much slower?
* Constrained intra + adaptive MBAFF. Does anyone care about this?
* PAFF + MBAFF adaptive - PAFF performs better than Adaptive MBAFF on high motion scenes because it can predict from the previous field.

===Weighted Prediction===
* '''Make weightp work with interlacing. Preferably abuse reference duplication to make it useful for MBAFF.'''
* Finish K-means decision for weightp. Talk to DylanZA about getting his current patch for this one.
* Add explicit weighting for B-frames, too. This helps in nonlinear fades, among other cases.

===Ratecontrol===
* VBV might be able to utilize the ability to re-encode a row of the frame for improved accuracy.
** Maybe re-encode everything in case of an underflow that row-reencoding can't fix? This might be better than underflowing.
* Current per-frame VBV is a hack. It only adapts per row and is O(N^2), where N is the number of rows. An O(N) solution would be able to react more often and thus be more accurate.
* Make the frame size and row size predictors better. They currently are kind of crappy.
* Ratecontrol code as a whole is a bit of a mess. It could be improved. There's a lot of cruft left over that is probably not needed now, like qblur.
* 2-pass VBV is actually more likely to underflow than 1-pass because it doesn't adapt as aggressively and trusts first pass data a lot. This trust is often misplaced if the first pass was a fast one. This should be improved.
* 2-pass macroblock-tree: if we added the ability to do macroblock-tree on real encoded data, we'd get better results (particularly with repeating patterns and multiref, such as an anime character's mouth moving).
* Macroblock-tree: make it more psy-aware. Maybe we should cap how much it lowers the quantizer on extremely static scenes? This might tie into the "just-noticeable error" issue in RD.

===GPU===
* Motion estimation?
** Methods
*** Hierarchical?
*** 2D Wave?
*** Something else?
** "Easy": lookahead motion estimation
*** Extremely high parallelism, hundreds of frame searches (each with thousands of searches) at once.
** "Hard": main motion estimation
*** Difficult synchronization issues, not as heavily parallel in terms of number of macroblocks, but far more partition sizes and refs to search.
*** But potentially more useful...
* Other things?

===x86 assembly===
* Optimize more for the Phenom.
* Optimize for Sandy Bridge.
* Work more on 10-bit asm.
* If you read this, join #x264dev on irc://irc.freenode.net and ping holger to commit his local patches.
* Make a merged SA8D/SATD for the 8x8dct mode decision, since the two share most of their calculation. Hadamard_ac already does this, but slightly differently.

===Other assembly===
* NEON assembly is nowhere near complete.
** Chroma MC needs to be rewritten for NV12 support.
* Altivec assembly is very lacking.
* SPARC VIS assembly is only available when high bit-depth is disabled.

===Other CPU optimizations===
* x264 needs more prefetching. How many L1 and L2 cache misses (particularly L1) can we get rid of via smart prefetching in the right places? Warning: this is often hard to benchmark.
* Different CPUs take different relative times for some functions. Is this enough (particularly across architectures) to justify different encoding settings for different CPUs?

===Other features===
* MPEG-2 encoding support
* VP8 encoding support
* '''4:2:2 and 4:4:4 colorspace support'''
** '''RGB?'''
* Support for timecodes
* Merge speedcontrol
* Mixed lossless/lossy encoding.

===x264CLI===
* Finish audio support. Talk to Kovensky about this one.
* Make the filtering system aware of fullrange vs TV range.
* Make the filtering system aware of BT.601 vs BT.709.
* Add more filters.
** Deinterlacers (YADIF).
** Denoisers (HQDN3D?).
** IVTC, decomb?
* Merge L-SMASH mp4 muxer.
* Add TS muxing support using HRD. Talk to kierank about this one.
* Add --device support.
* Add automatic --level restriction support.

SoC 2010/Macroblock adaptive frame field interlacing

2010-06-14T12:48:05Z

Simonhorlick: /* Repository */

{{SoCProject|year=2010|student=[[User:Simonhorlick|Simon Horlick-Loach]]|mentor=[[User:Dark_Shikari|Jason Garret-Glaser]]}}

== Abstract ==

Currently x264 supports interlaced encoding with MBAFF frame structure where each macroblock is encoded as interlaced. This project will implement full adaptive interlacing support where macroblocks are encoded as progressive or interlaced depending on their content.

== Milestones ==

This list is ''very'' preliminary.

{| class="wikitable"
! Status !! Deadline !! Description
|-
| - || July 12 || Mid term evaluations
|-
| - || August 9 || Suggested "pencils down" date
|-
| - || August 16 || Firm "pencils down" date
|-
|}

== Timeline ==

This schedule is preliminary.

{| class="wikitable"
! Status !! Date !! Period !! Description
|-
| Done || April 12 - April 18 || Qualification || Intra only encoding
|-
| In progress || May 31 - June 6 || || Reading and planning
|-
| In progress || June 7 - June 13 || Week 1 || Modify cache_load for motion vector/reference frame information. Hpel filtering.
|-
| Not started || June 14 - June 20 || Week 2 || Cabac
|-
| Not started || June 21 - June 27 || Week 3 || B-frames
|-
| Not started || June 28 - July 4 || Week 4 || B-frames
|-
| Not started || July 5 - July 11 || Week 5 || Deblocking
|-
| Not started || July 12 - July 18 || Week 6 || Deblocking
|-
| Not started || July 19 - July 25 || Week 7 || Initial MBAFF decision
|-
| Not started || July 26 - August 1 || Week 8 || Modify things that assume interlaced/progressive (AQ)
|-
| Not started || August 2 - August 8 || Week 9 || Better MBAFF decision
|-
| Not started || August 9 - August 15 || Week 10 || Finishing
|}

== Repository ==

[http://github.com/simonhorlick/x264-mbaff http://github.com/simonhorlick/x264-mbaff]

SoC 2010/Macroblock adaptive frame field interlacing

2010-06-14T12:46:26Z

Simonhorlick: /* Repository */

SoC 2010/Macroblock adaptive frame field interlacing

2010-06-14T12:45:12Z

Simonhorlick: /* Timeline */

SoC 2010/Macroblock adaptive frame field interlacing

2010-06-08T18:59:28Z

Simonhorlick: Added information to timeline

{{SoCProject|year=2010|student=[[User:Simonhorlick|Simon Horlick-Loach]]|mentor=[[User:Dark_Shikari|Jason Garret-Glaser]]}}

== Abstract ==

Currently x264 supports interlaced encoding with MBAFF frame structure where each macroblock is encoded as interlaced. This project will implement full adaptive interlacing support where macroblocks are encoded as progressive or interlaced depending on their content.

== Milestones ==

This list is ''very'' preliminary.

{| class="wikitable"
! Status !! Deadline !! Description
|-
| - || July 12 || Mid term evaluations
|-
| - || August 9 || Suggested "pencils down" date
|-
| - || August 16 || Firm "pencils down" date
|-
|}

== Timeline ==

This schedule is preliminary.

{| class="wikitable"
! Status !! Date !! Period !! Description
|-
| Done || April 12 - April 18 || Qualification || Intra only encoding
|-
| In progress || May 31 - June 6 || || Reading and planning
|-
| Not started || June 7 - June 13 || Week 1 || Modify cache_load for motion vector/reference frame information.
|-
| Not started || June 14 - June 20 || Week 2 || Cabac
|-
| Not started || June 21 - June 27 || Week 3 || B-frames
|-
| Not started || June 28 - July 4 || Week 4 || B-frames
|-
| Not started || July 5 - July 11 || Week 5 || Deblocking
|-
| Not started || July 12 - July 18 || Week 6 || Deblocking
|-
| Not started || July 19 - July 25 || Week 7 || Initial MBAFF decision
|-
| Not started || July 26 - August 1 || Week 8 || Modify things that assume interlaced/progressive (AQ)
|-
| Not started || August 2 - August 8 || Week 9 || Better MBAFF decision
|-
| Not started || August 9 - August 15 || Week 10 || Finishing
|}

== Repository ==

Need to set up.

SoC 2010/Macroblock adaptive frame field interlacing

2010-05-27T08:07:01Z

Simonhorlick:

{{SoCProject|year=2010|student=[[User:Simonhorlick|Simon Horlick-Loach]]|mentor=[[User:Dark_Shikari|Jason Garret-Glaser]]}}

== Abstract ==

Currently x264 supports interlaced encoding with MBAFF frame structure where each macroblock is encoded as interlaced. This project will implement full adaptive interlacing support where macroblocks are encoded as progressive or interlaced depending on their content.

== Milestones ==

This list is ''very'' preliminary.

{| class="wikitable"
! Status !! Deadline !! Description
|-
| - || July 12 || Mid term evaluations
|-
| - || August 9 || Suggested "pencils down" date
|-
| - || August 16 || Firm "pencils down" date
|-
|}

== Timeline ==

This schedule is ''very'' preliminary.

{| class="wikitable"
! Status !! Date !! Period !! Description
|-
| Done || April 12 - April 18 || Qualification || Intra only encoding
|-
| In progress || May 31 - June 6 || || Reading and planning
|-
| Not started || June 7 - June 13 || Week 1 ||
|-
| Not started || June 14 - June 20 || Week 2 ||
|-
| Not started || June 21 - June 27 || Week 3 ||
|-
| Not started || June 28 - July 4 || Week 4 ||
|-
| Not started || July 5 - July 11 || Week 5 ||
|-
| Not started || July 12 - July 18 || Week 6 ||
|-
| Not started || July 19 - July 25 || Week 7 ||
|-
| Not started || July 26 - August 1 || Week 8 ||
|-
| Not started || August 2 - August 8 || Week 9 ||
|-
| Not started || August 9 - August 15 || Week 10 ||
|}



== Repository ==

Need to set up.

SoC 2010/Macroblock adaptive frame field interlacing

2010-05-27T08:04:21Z

Simonhorlick: Initial template

{{SoCProject|year=2010|student=[[User:Simonhorlick|Simon Horlick-Loach]]|mentor=[[User:Dark_Shikari|Jason Garret-Glaser]]}}

== Abstract ==

Currently x264 supports interlaced encoding with MBAFF frame structure where each macroblock is encoded as interlaced. This project will implement full adaptive interlacing support where macroblocks are encoded as progressive or interlaced depending on their content.

== Milestones ==

This list is ''very'' preliminary.

{| class="wikitable"
! Status !! Deadline !! Description
|-
| - || July 12 || Mid term evaluations
|-
| - || August 9 || Suggested "pencils down" date
|-
| - || August 16 || Firm "pencils down" date
|-
|}

== Timeline ==

This schedule is ''very'' preliminary.

{| class="wikitable"
! Status !! Date !! Period !! Description
|-
| Done || April 12 - April 18 || Qualification || Intra only encoding
|-
| In progress || May 31 - June 6 || || Reading and planning
|-
| Not started || June 7 - June 13 || Week 1 ||
|-
| Not started || June 14 - June 20 || Week 2 ||
|-
| Not started || June 21 - June 27 || Week 3 ||
|-
| Not started || June 28 - July 4 || Week 4 ||
|-
| Not started || July 5 - July 11 || Week 5 ||
|-
| Not started || July 12 - July 18 || Week 6 ||
|-
| Not started || July 19 - July 25 || Week 7 ||
|-
| Not started || July 26 - August 1 || Week 8 ||
|-
| Not started || August 2 - August 8 || Week 9 ||
|-
| Not started || August 9 - August 15 || Week 10 ||
|}

== Repository ==

Need to set up.

SoC 2010 projects

2010-05-26T19:24:05Z

Simonhorlick: Added mbaff entry.

Here is a list of the accepted projects for Google Summer of Code 2O10.

= List of current VLC projects =

== Shader support for video post-processing ==

*'''Project page: [[SoC 2010 Shader Support]]'''
*'''Student''': [[User:Skoruga|Sasha Koruga]]
*'''Mentor''': Adrien Maglo
*'''Abstract''':

A lot of video post-processing such as RGB-YUV conversion can be accelerated by using the GPU. This can either be achieved through a fragment shader, where it is the last step before a pixel is displayed on the screen, or it can be done with DirectCompute/CUDA/OpenCL. The method will vary depending on the task and intent. I will implement support for shaders by using the DirectX and OpenGL API and write a few shaders such as RGB-YUV conversion.

== Port VLC Player to Symbian Platform ==

*'''Project page: [[SoC 2010 Shader Support]]'''
*'''Student''': [[User:pk2010|Pankaj Yadav]]
*'''Mentor''': Rémi Duraffort
*'''Abstract''':

To port VLC Player to Symbian S60 Platform.

== ASF demuxer ==

*'''Project page: [[SoC 2010 ASF Demuxer]]'''
*'''Student''': [[User:Juhovh|Juho Vähä-Herttua]]
*'''Mentor''': Ilkka Ollakka
*'''Abstract''':

I was selected to do a project related to ASF and Matroska demuxers, but since there's some overlap related to Matroska, my main goal now is to improve the ASF demuxer as much as I can and then find another similar project to work on the rest of the time.

== Implementing BD-J support in libbluray and VLC ==

*'''Project page: [[SoC 2010/Implementing BD-J support in libbluray and VLC]]'''
*'''Student''': [[User:Will07c5|William Hahne]]
*'''Mentor''': [[User:Jpsaman|Jean-Paul Saman]]
*'''Abstract''':

This project will focus primarily on getting BD-J (Blu-ray Disc Java) support into libbluray. BD-J support is important because many of the advanced features and extra content in Blu-ray movies uses BD-J. Currently people with Blu-ray drives are tied to Windows if they want to access this content, they are forced to use proprietary Blu-ray software which does not run on Linux or various other operating systems. This project will also integrate the BD-J support into VLC.

== Interface for mobile phones (WinCE and others) ==

*'''Project page: '''[[SoC 2010/Interface for mobile phones|'''Interface for mobile phones ''']]
*'''Student:''' [[User:Vnik|Kumar Anik]] 
*'''Mentor:''' [[User:Geal|Geoffroy Couprie]] 
*'''Abstract: '''

To develop a GUI for Mobiles, especially WinCE ones.

== Ogg demuxer ==

*'''Project page: [[SoC 2010 Ogg Demuxer]]'''
*'''Student''': [[User:salsaman|salsaman]]
*'''Mentor''': Christophe Mutricy
*'''Abstract''':

I was selected to rewrite the ogg demuxer. I wrote an ogg/theora demuxer already for LiVES, but I am in the process of learning about other stream types within ogg (e.g. dirac, vorbis, kate, speex and flac).

== DLNA UPnP Server/Client Modules ==

*'''Project page: [[SoC 2010/DLNA UPnP Server Client Modules]]'''
*'''Student''': [[User:Aust|Austin Burrow]]
*'''Mentor''': Konstantin Pavlov
*'''Abstract''':

Implement Server/Client modules into VLC that are compatible with the DLNA specification for UPnP.

== Media Library integration and LV2 Audio filters ==

*'''Project page: [[SoC 2010/Media Library and LV2]]'''
*'''Student''': [[User:jetru|Srikanth Raju]]
*'''Mentor''': [[User:J-Peg|Jean-Philippe André]]
*'''Abstract''':

Complete integrating Media Library with the VLC UI and also implement LV2 filters module

== [De]Muxer/Codec Layer fixes and improvements ==

*'''Project page: [[SoC 2010/Demux and codec layer improvements]]'''
*'''Student''': [[User:jai|Jai Menon]]
*'''Mentor''': [[User:J-b|Jean-Baptiste Kempf]]
*'''Abstract''':

This project aims at improving the current [de]mux and codec layer in VLC with a specific focus on matroska and the avformat/avcodec wrappers. Details on what is being worked on would be tracked on the project page.

 

= List of current x264 projects =
==Support for high bit depth encoding==
* '''Project page''': [[SoC 2010/High Bit Depth Encoding]]
* '''Student''': [[User:Irock|Oskar Arvidsson]]
* '''Mentor''': [[User:Holger|Holger Lubitz]]
* '''Abstract''':

The primary goal for this project is to prepare the code base of x264 for encoding H.264 video with user defined sample depths. This will involve templating the encoder and migrating existing C code for use with higher sample depths.

==Audio support==
* '''Project page''': [[SoC 2010/Audio on x264]]
* '''Student''': [[User:Kovensky|Diogo Franco]]
* '''Mentor''': [[User:Dark_Shikari|Jason Garret-Glaser]]
* '''Abstract''':

Implement an audio filtering system that allows transcoding of audio with resampling, sample format conversion and channel remixing.
This is meant to be used for using with the soon-to-be-merged video filtering system for doing transcoding using only x264.
Is also a prerequisite for the planned --device option that will automatically downscale the video if needed, set the appropriate H.264 level options and transcode to the appropriate audio codec.

==Macroblock adaptive frame-field interlacing==
* '''Project page''': [[SoC 2010/Macroblock adaptive frame field interlacing]]
* '''Student''': [[User:Simonhorlick|Simon Horlick-Loach]]
* '''Mentor''': [[User:Dark_Shikari|Jason Garret-Glaser]]
* '''Abstract''':

Currently x264 supports interlaced encoding with MBAFF frame structure where each macroblock is encoded as interlaced. This project will implement full adaptive interlacing support where macroblocks are encoded as progressive or interlaced depending on their content.

= List of current VLMC projects =
==Enhancing VLMC==

* '''Project page: [[SoC 2010/Youtube Integration VLMC|SoC 2010/Youtube Integration in VLMC]]'''
* '''Student''': [[User:Rohityadav|Rohit Yadav]]
* '''Mentor''': Ludovic 'etix' Fauvet
* '''Abstract''':

Youtube is the most popular video sharing website, right now. VLMC is a video editing software and having features in VLMC to search-retrieve videos, directly upload/update/delete videos on Youtube, within the application itself, would be awesome. The aim of this project is to write a small C++/Qt based Youtube client library for VLMC that provides her all the APIs to perform all those things.

= List of current Phonon projects =
== PCM I/O API ==

* '''Project page''': [[SoC 2010/PCM IO API (Phonon)]]
* '''Student''': [[User:Mforney|Michael Forney]]
* '''Mentor''': Jean-Baptiste Kempf
* '''Abstract''':

Design a fully featured PCM I/O API for Phonon, and provide an implementation for the Phonon-VLC backend and one other (either MPlayer or Xine). This API will allow developers to capture PCM data from devices like a sound card, or to play back raw audio from memory, or elsewhere. This will provide some important missing features in Phonon, and open the door for many applications waiting to make use of an API like this.

[[Category:SoC_2010_Project]][[Category:SoC]]

== Capture API ==

* '''Project page: [[SoC 2010 Phonon Capture API]]'''
* '''Student''': [[User:Skelet|Casian Andrei]]
* '''Mentor''': Hugo Beauzee-Luyssen
* '''Abstract''':

The goal of this project is to enable Phonon applications to access and display input devices, like webcams. The Phonon code-base is well designed and flexible, and apparently no major modifications are needed to the current API. The ease of use for the Phonon application developer is a priority. Features implemented in Phonon will be implemented in the Phonon-VLC back-end in parallel. Various device classes should be supported.

[[Category:SoC_2010_Project]][[Category:SoC]]