Output Type

Presets exist for an unlimited amount of time. You can delete them easily, as well. Just select the preset you wish to delete, and click the small grey X to the right of the selected preset name in the dropdown box, after it's selected. You'll receive a confirmation dialogue box once the operation is complete.

We test video playback on a variety of devices, from Mac and Windows PCs, to all the various mobile phone platforms available today. One critical issue that comes up often is that the hosting server has not set the MIME types for the video type. A typical error message for this would be "unknown application/octet-stream". Here is a list of many common formats we encounter.

IMPORTANT: You will need to configure your ftp server to these MIME types for them to be properly recognized by their respective playback devices.

With TAR output is set to OFF, and should see .m3u8 pointers and .ts segment files populate your output directory. The trick is correctly formatting the output filepath. You have to make sure your output filepath has a filename WITHOUT a 3-character file extension. I had this same problem because I either defined only the output directory, or had an output filename with .m3u on it. In both cases that will force a TAR output even if you have set it to off. SAMPLES: To get your segments, a correct output filepath should look something like this: http://yourbucket.s3.amazonaws.com/iphonetest/outputfilename ftp://username:password@ftp.yourserver.net/iphonetest/outputfilename

We often field questions from customers about how the bitrate relates to both quality and the total size of the file. This can confusing to people new to encoding, so I'll try to cover the key points here. Generally the higher the bitrate the higher the image quality of the video output. Modern codecs like H.264 will look noticeably better at the same bitrate vs. older codecs like H.263, and variable bitrate (VBR) will look better than constant bitrate (CBR) in most applications. Keep in mind, there are 8 bits in a byte. So 1 megabyte per second would be 8 megabits per second (mbps). For reference, HD Blu-ray video is generally around 20mbps, standard definition DVD around 6mbps, high-quality web video about 2 mbps, and video for phones in the kilobit range (kbps). Here is the math from testing VP6 output for a video with a duration of 93 seconds: On2 Flix VP6 = 2,080 kbytes x 8 = 16,640 kbits / 93 secs = 179 kbits/sec ffmpeg VP6 = 3,051 kbytes x 8 = 24,408 kbits / 93 secs = 262 kbits/sec But for everyday use, there are a few different tools for detecting bitrate and codecs: MediaInfo is a nice basic tool for quickly seeing all the stats on a video file. http://mediainfo.sourceforge.net/en For MacOS, you can use the Inspector window in QuickTime Player. I strongly recommend having the Perian codec pack to read non-native codecs. http://www.perian.org/ For analyzing Blu-ray Discs, see BDInfo for Windows http://www.cinemasquid.com/blu-ray/tools/bdinfo/