| 2010-11-07 21:48:48 |
Nicola Ferralis |
bug |
|
|
added bug |
| 2010-11-07 21:49:10 |
Nicola Ferralis |
bug watch added |
|
http://trac.videolan.org/vlc/ticket/4312 |
|
| 2010-11-07 21:49:10 |
Nicola Ferralis |
bug task added |
|
vlc |
|
| 2010-11-07 22:18:40 |
Nicola Ferralis |
vlc (Ubuntu): status |
New |
Invalid |
|
| 2010-11-07 22:18:54 |
Nicola Ferralis |
vlc (Ubuntu): status |
Invalid |
New |
|
| 2010-11-10 23:52:07 |
Bug Watch Updater |
vlc: status |
Unknown |
Confirmed |
|
| 2010-11-17 22:30:34 |
Nicola Ferralis |
summary |
Image abnmormally stretched when streaming with transcode activated. |
Image abnmormally stretched when streaming with transcode activated (Integer overflow in aspect ratio calculation) |
|
| 2010-11-17 22:30:40 |
Nicola Ferralis |
vlc (Ubuntu): status |
New |
Confirmed |
|
| 2010-11-17 22:30:51 |
Nicola Ferralis |
vlc (Ubuntu): status |
Confirmed |
In Progress |
|
| 2010-11-17 22:30:57 |
Nicola Ferralis |
vlc (Ubuntu): status |
In Progress |
Fix Committed |
|
| 2010-11-17 22:31:02 |
Nicola Ferralis |
vlc (Ubuntu): status |
Fix Committed |
Confirmed |
|
| 2010-11-17 23:14:21 |
Nicola Ferralis |
attachment added |
|
transcode_aspect_ratio.debdiff https://bugs.launchpad.net/vlc/+bug/672304/+attachment/1736633/+files/transcode_aspect_ratio.debdiff |
|
| 2010-11-17 23:14:41 |
Nicola Ferralis |
attachment added |
|
transcode_aspect_ratio.diff https://bugs.launchpad.net/vlc/+bug/672304/+attachment/1736634/+files/transcode_aspect_ratio.diff |
|
| 2010-11-17 23:18:09 |
Nicola Ferralis |
tags |
|
patch |
|
| 2010-11-18 04:48:21 |
Nicola Ferralis |
bug watch added |
|
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=603888 |
|
| 2010-11-18 04:48:21 |
Nicola Ferralis |
bug task added |
|
vlc (Debian) |
|
| 2010-11-18 13:02:09 |
Bug Watch Updater |
vlc (Debian): status |
Unknown |
New |
|
| 2010-11-18 17:30:14 |
Brian Murray |
bug |
|
|
added subscriber Ubuntu Review Team |
| 2010-11-18 23:30:11 |
Launchpad Janitor |
vlc (Ubuntu): status |
Confirmed |
Fix Released |
|
| 2010-11-19 00:19:41 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/vlc |
|
| 2010-11-19 01:56:58 |
Bug Watch Updater |
vlc: status |
Confirmed |
Fix Released |
|
| 2010-11-19 06:53:01 |
Nicola Ferralis |
description |
Binary package hint: vlc
Using VLC 1.1.4 on Ubuntu 10.10. When I try to stream my Desktop (and transcoding it with h264), the image I stream is always stretched laterally. This also happens when I stream from a webcam (v4l2): the image is stretched vertically. Note that if I select to stream without transcoding, the image, in either case, looks normal. Please keep in mind that this bug seems to be only reproducible with Ubuntu. In Windows everything works as expected.
This is the generated output string used when transcoding is on:
:sout=#transcode{vcodec=h264,vb=1500,scale=1,width=640,height=480,acodec=mp4a,ab=128,channels=2,samplerate=44100}:http{dst=192.168.1.5:8080/stream.flv} :no-sout-rtp-sap :no-sout-standard-sap :sout-keep
BTW, I tested it with different webcams, resulting all in the same abnormal behaviour. |
Binary package hint: vlc
Using VLC 1.1.4-1 on Ubuntu 10.10. When I try to stream and transcode from capturing with a webcam, the image in the stream is always stretched vertically. Note that if I select to stream without transcoding, the image, in either case, looks normal. Please keep in mind that this bug seems to be only reproducible with Ubuntu. In Windows everything works as expected. I tried several webcams, with similar results. As it is, streaming from a capture device like a webcam is completely unusable.
The cause of the bug (a comprehensive description is given in the upstream report) is due to a interger overflow during transcoding. Basically, the aspect ratio for a 640x320 webcam is given in absolute terms, for example 276480000:276480000 which is equivalent to 1:1, but when multiplied by 640 the result is > 32 bits.
The attached patch essentially prevents the overflow by reducing the value of the aspect ratio within 32 bit and by assigning a working value for the aspect ratio of the image after decoding.
TEST CASE to reproduce:
0. Make sure you have a webcam attached.
1. Launch vlc
2. press CTRL+C for capture from the webcam using v4l2
3. press ALT+S for streaming
4. select stream to a file (but http will do also)
5. Important: make sure you select a transcoding option. Anyone is
good, other than OGG (where this bug seem not to apply).
6. Start the stream and wait a few minutes, before turning the stream OFF.
Expected: the file (or http stream) should have an image with the
correct aspect ratio.
Actual: the video is deformed (in my case vertically elongated.
The patch has been extensively tested on test builds on VLC 1.1.4-1ubuntu1 in maverick. No collateral effects are expected.
|
|
| 2010-11-19 06:53:16 |
Nicola Ferralis |
description |
Binary package hint: vlc
Using VLC 1.1.4-1 on Ubuntu 10.10. When I try to stream and transcode from capturing with a webcam, the image in the stream is always stretched vertically. Note that if I select to stream without transcoding, the image, in either case, looks normal. Please keep in mind that this bug seems to be only reproducible with Ubuntu. In Windows everything works as expected. I tried several webcams, with similar results. As it is, streaming from a capture device like a webcam is completely unusable.
The cause of the bug (a comprehensive description is given in the upstream report) is due to a interger overflow during transcoding. Basically, the aspect ratio for a 640x320 webcam is given in absolute terms, for example 276480000:276480000 which is equivalent to 1:1, but when multiplied by 640 the result is > 32 bits.
The attached patch essentially prevents the overflow by reducing the value of the aspect ratio within 32 bit and by assigning a working value for the aspect ratio of the image after decoding.
TEST CASE to reproduce:
0. Make sure you have a webcam attached.
1. Launch vlc
2. press CTRL+C for capture from the webcam using v4l2
3. press ALT+S for streaming
4. select stream to a file (but http will do also)
5. Important: make sure you select a transcoding option. Anyone is
good, other than OGG (where this bug seem not to apply).
6. Start the stream and wait a few minutes, before turning the stream OFF.
Expected: the file (or http stream) should have an image with the
correct aspect ratio.
Actual: the video is deformed (in my case vertically elongated.
The patch has been extensively tested on test builds on VLC 1.1.4-1ubuntu1 in maverick. No collateral effects are expected.
|
Binary package hint: vlc
Using VLC 1.1.4-1 on Ubuntu 10.10. When I try to stream and transcode from capturing with a webcam, the image in the stream is always stretched vertically. Note that if I select to stream without transcoding, the image, in either case, looks normal. Please keep in mind that this bug seems to be only reproducible with Ubuntu. In Windows everything works as expected. I tried several webcams, with similar results. As it is, streaming from a capture device like a webcam is completely unusable.
The cause of the bug (a comprehensive description is given in the upstream report) is due to a integer overflow during transcoding. Basically, the aspect ratio for a 640x320 webcam is given in absolute terms, for example 276480000:276480000 which is equivalent to 1:1, but when multiplied by 640 the result is > 32 bits.
The attached patch essentially prevents the overflow by reducing the value of the aspect ratio within 32 bit and by assigning a working value for the aspect ratio of the image after decoding.
TEST CASE to reproduce:
0. Make sure you have a webcam attached.
1. Launch vlc
2. press CTRL+C for capture from the webcam using v4l2
3. press ALT+S for streaming
4. select stream to a file (but http will do also)
5. Important: make sure you select a transcoding option. Anyone is
good, other than OGG (where this bug seem not to apply).
6. Start the stream and wait a few minutes, before turning the stream OFF.
Expected: the file (or http stream) should have an image with the
correct aspect ratio.
Actual: the video is deformed (in my case vertically elongated.
The patch has been extensively tested on test builds on VLC 1.1.4-1ubuntu1 in maverick. No collateral effects are expected.
|
|
| 2010-11-19 06:53:57 |
Nicola Ferralis |
attachment added |
|
transcode_aspect_ratio_maverick.diff https://bugs.launchpad.net/ubuntu/+source/vlc/+bug/672304/+attachment/1737923/+files/transcode_aspect_ratio_maverick.diff |
|
| 2010-11-19 06:54:26 |
Nicola Ferralis |
attachment added |
|
transcode_aspect_ratio_maverick.debdiff https://bugs.launchpad.net/ubuntu/+source/vlc/+bug/672304/+attachment/1737924/+files/transcode_aspect_ratio_maverick.debdiff |
|
| 2010-11-19 07:05:06 |
Nicola Ferralis |
bug |
|
|
added subscriber Ubuntu Stable Release Updates Team |
| 2010-11-19 07:06:02 |
Nicola Ferralis |
bug |
|
|
added subscriber Ubuntu Sponsors Team |
| 2010-11-19 07:49:33 |
Micah Gersten |
nominated for series |
|
Ubuntu Maverick |
|
| 2010-11-19 07:49:33 |
Micah Gersten |
bug task added |
|
vlc (Ubuntu Maverick) |
|
| 2010-11-19 07:50:59 |
Micah Gersten |
vlc (Ubuntu Maverick): importance |
Undecided |
Medium |
|
| 2010-11-19 07:50:59 |
Micah Gersten |
vlc (Ubuntu Maverick): status |
New |
Incomplete |
|
| 2010-11-19 07:50:59 |
Micah Gersten |
vlc (Ubuntu Maverick): assignee |
|
Nicola Ferralis (feranick) |
|
| 2010-11-19 07:51:56 |
Micah Gersten |
removed subscriber Ubuntu Sponsors Team |
|
|
|
| 2010-11-19 09:10:02 |
Nicola Ferralis |
attachment removed |
transcode_aspect_ratio_maverick.debdiff https://bugs.launchpad.net/ubuntu/+source/vlc/+bug/672304/+attachment/1737924/+files/transcode_aspect_ratio_maverick.debdiff |
|
|
| 2010-11-19 09:10:25 |
Nicola Ferralis |
attachment removed |
transcode_aspect_ratio_maverick.diff https://bugs.launchpad.net/ubuntu/+source/vlc/+bug/672304/+attachment/1737923/+files/transcode_aspect_ratio_maverick.diff |
|
|
| 2010-11-19 09:15:31 |
Nicola Ferralis |
attachment added |
|
transcode_aspect_ratio_maverick.debdiff https://bugs.launchpad.net/ubuntu/+source/vlc/+bug/672304/+attachment/1738027/+files/transcode_aspect_ratio_maverick.debdiff |
|
| 2010-11-19 09:15:59 |
Nicola Ferralis |
attachment added |
|
transcode_aspect_ratio_maverick.diff https://bugs.launchpad.net/ubuntu/+source/vlc/+bug/672304/+attachment/1738029/+files/transcode_aspect_ratio_maverick.diff |
|
| 2010-11-19 09:17:56 |
Nicola Ferralis |
vlc (Ubuntu Maverick): status |
Incomplete |
New |
|
| 2010-11-19 09:18:00 |
Nicola Ferralis |
vlc (Ubuntu Maverick): assignee |
Nicola Ferralis (feranick) |
|
|
| 2010-11-19 09:18:25 |
Nicola Ferralis |
bug |
|
|
added subscriber Ubuntu Sponsors Team |
| 2010-11-19 09:38:05 |
Nicola Ferralis |
attachment added |
|
transcode_aspect_ratio_maverick_2.debdiff https://bugs.launchpad.net/ubuntu/+source/vlc/+bug/672304/+attachment/1738037/+files/transcode_aspect_ratio_maverick_2.debdiff |
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| 2010-11-19 09:38:33 |
Nicola Ferralis |
attachment added |
|
transcode_aspect_ratio_maverick_2.diff https://bugs.launchpad.net/ubuntu/+source/vlc/+bug/672304/+attachment/1738038/+files/transcode_aspect_ratio_maverick_2.diff |
|
| 2010-11-19 16:56:52 |
Micah Gersten |
vlc (Ubuntu Maverick): status |
New |
In Progress |
|
| 2010-11-19 16:56:52 |
Micah Gersten |
vlc (Ubuntu Maverick): assignee |
|
Micah Gersten (micahg) |
|
| 2010-11-19 17:12:07 |
Micah Gersten |
removed subscriber Ubuntu Sponsors Team |
|
|
|
| 2010-11-19 19:43:46 |
Micah Gersten |
vlc (Ubuntu Maverick): assignee |
Micah Gersten (micahg) |
|
|
| 2010-11-22 09:14:29 |
Martin Pitt |
vlc (Ubuntu Maverick): status |
In Progress |
Fix Committed |
|
| 2010-11-22 09:14:35 |
Martin Pitt |
bug |
|
|
added subscriber SRU Verification |
| 2010-11-22 09:14:38 |
Martin Pitt |
tags |
patch |
patch verification-needed |
|
| 2010-11-23 09:19:22 |
Martin Pitt |
tags |
patch verification-needed |
patch verification-done |
|
| 2010-11-24 00:28:41 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/maverick-proposed/vlc |
|
| 2010-11-24 09:41:31 |
Launchpad Janitor |
branch linked |
|
lp:debian/experimental/vlc |
|
| 2010-11-24 14:33:08 |
Bug Watch Updater |
vlc (Debian): status |
New |
Fix Released |
|
| 2010-11-29 11:28:05 |
Launchpad Janitor |
vlc (Ubuntu Maverick): status |
Fix Committed |
Fix Released |
|
| 2011-09-19 21:38:33 |
Ubuntu Foundations Team Bug Bot |
tags |
patch verification-done |
patch testcase verification-done |
|
