Private:progress-hamza - Revision history

Aah10 at 09:00, 10 February 2015

2015-02-10T09:00:24Z

Aah10 at 08:58, 10 February 2015

2015-02-10T08:58:42Z

Aah10 at 08:53, 10 February 2015

2015-02-10T08:53:54Z

Aah10 at 08:52, 10 February 2015

2015-02-10T08:52:56Z

Aah10 at 06:28, 10 February 2015

2015-02-10T06:28:53Z

Aah10 at 06:23, 10 February 2015

2015-02-10T06:23:06Z

Aah10 at 02:00, 13 April 2014

2014-04-13T02:00:37Z

Aah10 at 07:30, 7 April 2014

2014-04-07T07:30:57Z

Aah10 at 06:25, 29 March 2014

2014-03-29T06:25:42Z

Aah10 at 20:31, 23 March 2014

2014-03-23T20:31:43Z

@@ Line 8: / Line 8: @@
 * Implemented an independent segment encoding, decoding, and transcoding utility. This is needed to automate the process for obtaining the average quality per segment for each representation (and will be helpful in future work if we dynamically need to change a segment's bitrate online).
 ** Also implemented a DASH segmenter based on GPAC's API (this will be useful if we need to generate DASH segments from a live stream).
-* Working on editing the scripts to include the average qualities per segment for the reference views.
+* Working on editing the scripts to include the average qualities per segment for the reference views in the MPD file.
 ** Also modifying the player's code to take this information into consideration in its rate adaptation logic.

@@ Line 4: / Line 4: @@
 * Ran additional experiments with a wider range of network bandwidth values for the two video sequences in the evaluation.
 * Captured the network packets for a couple of streaming sessions to check the cause for the gap between the actual and estimated network bandwidth values.
-** So far, I do not see any indication that the TCP window is being reduced. I did however found that sometimes the server was closing one or two of the opened connections after some time.
+** So far, I do not see any indication that the TCP window is being reduced. I did however find that sometimes the server was closing one or two of the opened connections after some time.
 ** After further investigation, I found that default KeepAliveTimeout value in the Apache2 Web server was 5 seconds. The two closed connections were a result of this timeout being triggered at some point during playback. I changed the server's configuration to make the timeout 20 seconds.
 * Implemented an independent segment encoding, decoding, and transcoding utility. This is needed to automate the process for obtaining the average quality per segment for each representation (and will be helpful in future work if we dynamically need to change a segment's bitrate online).

@@ Line 7: / Line 7: @@
 ** After further investigation, I found that default KeepAliveTimeout value in the Apache2 Web server was 5 seconds. The two closed connections were a result of this timeout being triggered at some point during playback. I changed the server's configuration to make the timeout 20 seconds.
 * Implemented an independent segment encoding, decoding, and transcoding utility. This is needed to automate the process for obtaining the average quality per segment for each representation (and will be helpful in future work if we dynamically need to change a segment's bitrate online).
-** Also implemented a DASH segmenter based on GPAC's API.
+** Also implemented a DASH segmenter based on GPAC's API (this will be useful if we need to generate DASH segments from a live stream).
 * Working on editing the scripts to include the average qualities per segment for the reference views.
 ** Also modifying the player's code to take this information into consideration in its rate adaptation logic.

@@ Line 4: / Line 4: @@
 * Ran additional experiments with a wider range of network bandwidth values for the two video sequences in the evaluation.
 * Captured the network packets for a couple of streaming sessions to check the cause for the gap between the actual and estimated network bandwidth values.
-**
+** So far, I do not see any indication that the TCP window is being reduced. I did however found that sometimes the server was closing one or two of the opened connections after some time.
 * Implemented an independent segment encoding, decoding, and transcoding utility. This is needed to automate the process for obtaining the average quality per segment for each representation (and will be helpful in future work if we dynamically need to change a segment's bitrate online).
 ** Also implemented a DASH segmenter based on GPAC's API.

@@ Line 5: / Line 5: @@
 * Captured the network packets for a couple of streaming sessions to check the cause for the gap between the actual and estimated network bandwidth values.
 **
-* Implemented an independent segment encoding, decoding, and transcoding utility.
+* Implemented an independent segment encoding, decoding, and transcoding utility. This is needed to automate the process for obtaining the average quality per segment for each representation (and will be helpful in future work if we dynamically need to change a segment's bitrate online).
 * Working on editing the scripts to include the average qualities per segment for the reference views.
-** Also editing the player to take this information into consideration in its rate adaptation logic.
+** Also modifying the player's code to take this information into consideration in its rate adaptation logic.

← Older revision		Revision as of 06:23, 10 February 2015
Line 1:		Line 1:
		+	= Spring 2015 (RA) =
		+
		+	=== Feb 9 ===
		+	* Ran additional experiments with a wider range of network bandwidth values for the two video sequences in the evaluation.
		+	* Captured the network packets for a couple of streaming sessions to check the cause for the gap between the actual and estimated network bandwidth values.
		+	**
		+	* Implemented an independent segment encoding, decoding, and transcoding utility.
		+	* Working on editing the scripts to include the average qualities per segment for the reference views.
		+	** Also editing the player to take this information into consideration in its rate adaptation logic.
		+
		+
	= Spring 2014 (RA) =		= Spring 2014 (RA) =
	* '''Courses:''' None		* '''Courses:''' None

← Older revision		Revision as of 02:00, 13 April 2014
Line 4:		Line 4:
	* '''Publications:'''		* '''Publications:'''
	** A DASH-based Free-Viewpoint Video Streaming System (NOSSDAV'14), Mar 2014.		** A DASH-based Free-Viewpoint Video Streaming System (NOSSDAV'14), Mar 2014.
		+
		+
		+	=== Apr 12 ===
		+	* Mainly working on refactoring the client implementation to get it working better with the new features.
		+	* Cheng provided a GPU machine for me and I'm trying to get the results for the RD measurements faster using multiple machines (also tried GPU instances on AWS but has some configuration problems so I decided to look into it later).

← Older revision		Revision as of 07:30, 7 April 2014
Line 4:		Line 4:
	* '''Publications:'''		* '''Publications:'''
	** A DASH-based Free-Viewpoint Video Streaming System (NOSSDAV'14), Mar 2014.		** A DASH-based Free-Viewpoint Video Streaming System (NOSSDAV'14), Mar 2014.
		+
		+
		+	=== Apr 5 ===
		+	* Virtual views distortion calculation scripts are running for one sequence but may take some time to finish (running for two days so far). Synthesizing, writing to disk, calculating distortion, for each virtual view using each possible combination of bit rates is time consuming.
		+	* Discussed with Khaled the refactoring of the client code. We are hoping to get a lock-free design to eliminate all random behaviours when switching views.
		+	* Completed the writing of 5 sections.
		+	* Working on the evaluation plan.

← Older revision		Revision as of 06:25, 29 March 2014
Line 4:		Line 4:
	* '''Publications:'''		* '''Publications:'''
	** A DASH-based Free-Viewpoint Video Streaming System (NOSSDAV'14), Mar 2014.		** A DASH-based Free-Viewpoint Video Streaming System (NOSSDAV'14), Mar 2014.
		+
		+
		+	=== Mar 28 ===
		+	* Realized that the virtual view distortion model does not really need to include the D-Q relationship since the videos are already pre-coded. Therefore, we will include the per-segment distortion in the MPD and I'm comparing the accuracy of the model against the cubic model proposed by Velisavljevic et al. and will use the one with higher accuracy.
		+	* Still working on the pre-fetching code.
		+	* The write-up so far is available on the SVN server.

← Older revision		Revision as of 20:31, 23 March 2014
Line 3:		Line 3:

	* '''Publications:'''		* '''Publications:'''
−	** A DASH-based Free-Viewpoint Video Streaming System (NOSSDAV'14), to ~~appear~~.	+	** A DASH-based Free-Viewpoint Video Streaming System (NOSSDAV'14), Mar 2014.
		+
		+
		+	=== Mar 21 ===
		+	* Writing scripts to calculate the distortions of reference views representations and the virtual views distortions (PSNR and SSIM) corresponding to different combinations of reference views representations. The goal is to obtain the values for the different coefficients in the virtual view distortion model.
		+	* Working on the write-up for the paper based on several discussions and meetings with ChengHsin.
		+	* Fixing some issues with the client and adding the distortion model based adaptation logic and stream pre-fetching.