As the number and types of viewing devices continues to grow, video formats for new viewing platforms are being developed and updated at a rapid pace. Few content owners, service providers and telecom operators or enterprises have the in-house hardware and software—or the expertise to keep them current–needed to ensure that their video can be viewed on all popular platforms.
Cloud-based NSA encoding and transcoding services enable you to deliver pristine HD and SD content to any device, without concern about upgrading, updating or adding encoding or transcoding equipment as formats and platforms evolve. Adaptive bit rate (ABR) transcoding and encoding ensures that all content—live, playlist or VOD– is compatible with all formats, CODECs and screens including TVs, set-top boxes, PCs and Macs, gaming consoles, smart phones and tablets.
The NSA cloud-based content preparation suite can encode and transcode video from the following formats:
List of the supported video codecs
| Video codec | flv: flv, libx264, vp6 |
| fl9, mpegts: libx264 | |
| wmv, zune: wmv2 msmpeg4, libx264 | |
| 3gp, android: h263, mpeg4 libx264 | |
| m4v: mpeg4 | |
| mp4, ipod, iphone, ipad, appletv, psp: mpeg4, libx264 | |
| ogg: libtheora | |
| webm: libvpx | |
| mp3, wma: none | |
| mpeg2: mpeg2video |
List of the supported audio codecs
| Audio codec | mp3: libmp3lame |
| m4a: libfaac | |
| flv: libmp3lame, libfaac | |
| fl9, mp4, m4v, ipod, iphone, ipad, appletv, psp: libaac | |
| wmv, wma, zune: wmav2, libmp3lame | |
| ogg, webm: libvorbis | |
| 3gp: libamr_nb | |
| android: libamr_nb, libfaac | |
| mpeg2: pcm_s16be, pcm_s16le | |
| mpegts: ac3 |
Audio bitrates
| Audio bitrate | Nk: where N is any non-zero integer |
| 3gp: 4.75k, 5.15k, 5.9k, 6.7k, 7.4k, 7,95k, 10.2k, 12.2k | |
| flv, wmv, mp3, wma, zune: 32k, 40k, 48k, 56k, 64k, 80k, 96k, 112k, 128k, 144k, 160k, 192k, 224k, 256k, 320k | |
| ogg, webm: 45k, 64k, 80k, 96k, 112k, 128k, 160k, 192k, 224k, 256k, 320k, 500k |
Audio sample rate
| Audio sampling frequency (Hz) | All: any non-zero integer |
| 3gp: 8000 | |
| flv, mp3: 11025, 22050, 44100 | |
| ogg, webm: 16000, 32000, 44100, 22050, 11025, 192000 | |
| wmv, wma, zune: 11025, 22050, 32000, 44100, 48000 | |
| mpeg2: 44100, 48000 |
NSA encodes and transcodes video content into a wide range of formats for the following delivery models:
| Feature | Formats and Protocols |
| Live streaming | RTMP, RTSP, HTTP (HLS, HDS, smooth streaming), HTML5 |
| VOD streaming | RTMP, RTSP, progressive download, HTTP (HLS, HDS, Smooth Streaming), HTML 5 |
| High definition streaming | H.264, high profile, 720P, 1080P at 24,25 and 30 FPS |
| Multiple bit rates | For Flash, progressive download, adaptive and dynamic streaming
Handles up to 16 simultaneous bitrates and resolutions per asset in live streaming or VOD |
Video to be transcoded may be dropped onto the NSA CDN using a media management system or uploaded via FTP. An API callback updates the service provider’s or broadcaster’s back end when files are transcoded and ready for playback.
Streaming in Multiple Languages
Multi-track audio channel selection simplifies streaming in multiple languages. Choose the languages your users want from source streams with multiple audio tracks and deliver them