Downloaded videos are all 7579 bytes

[bow]

I'm running Python2.7.3 on Arch Linux. Everything works fine, and I can download the other files (pdf, pptx), but the mp4 files are all unplayable.

Here's what the console is showing

ALGO_01_I._INTRODUCTION/01_Introduction_-_Why_Study_Algorithms_.mp4
Downloading https://class.coursera.org/algo/lecture/download.mp4?lecture_id=20 ->  ALGO_01_I._INTRODUCTION/01_Introduction_-_Why_Study_Algorithms_.mp4
7579 bytes read .
ALGO_01_I._INTRODUCTION/02_About_the_Course.mp4
Downloading https://class.coursera.org/algo/lecture/download.mp4?lecture_id=21 ->  ALGO_01_I._INTRODUCTION/02_About_the_Course.mp4
7579 bytes read .
ALGO_01_I._INTRODUCTION/03_Merge_Sort-_Motivation_and_Example.mp4
Downloading https://class.coursera.org/algo/lecture/download.mp4?lecture_id=1 ->   ALGO_01_I._INTRODUCTION/03_Merge_Sort-_Motivation_and_Example.mp4
7578 bytes read .
ALGO_01_I._INTRODUCTION/04_Merge_Sort-_Pseudocode.mp4
Downloading https://class.coursera.org/algo/lecture/download.mp4?lecture_id=2 ->     ALGO_01_I._INTRODUCTION/04_Merge_Sort-_Pseudocode.mp4
7578 bytes read .
ALGO_01_I._INTRODUCTION/05_Merge_Sort-_Analysis.mp4
Downloading https://class.coursera.org/algo/lecture/download.mp4?lecture_id=3 ->     ALGO_01_I._INTRODUCTION/05_Merge_Sort-_Analysis.mp4

They're all the same size, and I can't figure out why..

[jplehmann]

That's very odd. I just downloaded a single video to test, and had no problems.
coursera-dl algo --cookies=../cookies.txt -f "mp4"
log:
ALGO_01_I._INTRODUCTION/01_Introduction_-_Why_Study_Algorithms_.mp4 20069479 bytes read .
file:
-rw-r--r-- 1 john john 20069479 2012-04-23 22:03 ALGO_01_I._INTRODUCTION/01_Introduction_-_Why_Study_Algorithms_.mp4

It's only reading the first 7578 or 7579 bytes of your videos before writing the files, according to the log.

[tomwolfe]

I had the same issue. Try deleting your old coursera cookies*, re-login, re-export your cookies file and try again. Those tiny files it's downloading are the coursera login page. Thus the previous steps fixed it for me. Hopefully it helps you.

*for chrome: https://support.google.com/chrome/bin/answer.py?hl=en&answer=95647&p=cpn_cookies

[rbrito]

As the cookies thing doesn't seem to be working anymore, I guess that this bug is not relevant anymore.

Thus, I'm closing this issue, but feel free to open another issue if the problem persists.