OBS Portable (Open Broadcaster Software Studio) (32/64-bit) 0.15.4 beta

"Video streaming apps are often expensive, not very good, or both expensive and not very good. Enter Open Broadcaster Software, a free, open-source solution which is super lightweight, includes many of the same options as software you can buy, and so far works beautifully for streaming games on Twitch.tv." —Tyler Wilde, PCGamer.com (Dec 4, 2012)

"Overall I've been very happy with OBS. The product works just like you'd expect, has pretty decent documentation (something that you usually do NOT see with open source projects) and has allowed me to do all of the things that I couldn't do with CamStudio, while retaining almost all of things that CamStudio could do." —Logan, loganslearnings.blogspot.com (May 2013)

"It's great for recording video from games." —Andrei David, PerfectGeeks.com

Open Broadcaster Software is a free and open source software for video recording and live streaming.

OBSStudioPortable_0.15.2_with_Browser_beta_32_64_bit.paf
Size: 372 MB (390,402,048 bytes) Packed Size: 93.1 MB (97,705,984 bytes)
MD5: 8B165868E9EF74011757150AA3582597
SHA-1: 49348494396BDC300EDC216C771DC4EF0FC82751

OBS Classic build:
OBSStudioPortable_0.15.4_with_Browser_beta_32_64_bit.paf
Size: 365 MB (383,016,960 bytes) Packed Size: 92.5 MB (96,993,280 bytes)
MD5: FBE5412C9889FEC652DB211BA930F5C3
SHA-1: 7230CD2FC8D03D66652839050E75AD2E87DDFE42

OBS64Portable_0.6.5.8_with_Browser_beta_64_bit.paf
Size: 183 MB (192,335,872 bytes) Packed Size: 50.3 MB (52,842,496 bytes)
MD5: 2F2F503E44CF766D9CB40FF66C2BE192
SHA-1: DEEC4CD329E614D863D7B67B9D473954D50EFAA7

Notes (included in the help.htm):
» Requires:
  › .NET 4.x, download the latest one: Installing the .NET Framework (web/offline installer).
  › DirectX, please read How to install the latest version of DirectX.
» If your computer does not meet OBS Studio's higher hardware requirements, use latest OBS Classic release.[]