Broadcast Beat Magazine 2017 IBC Show - Page 81

OVERCOMING NETWORK MONITORING CHALLENGES ON THE WAY TO IP WORKFLOWS By CHARLIE DUNN, VIDEO PRODUCT LINE GENERAL MANAGER, TEKTRONIX The broadcast equipment industry is in the pro- cess of making the transition to IP based trans- port for video, audio and data. This has led to development of a suite of standards including SMPTE ST 2022-6 for encapsulation of uncom- pressed SDI within IP packets and SMPTE ST 2110 for live IP production carrying separate video, audio and data packets. work traffic, router configuration, Precision Time Protocol (PTP) and Network Time Protocol (NTP) for timing. The biggest difference however is that in most data center applications, lost data can be re-sent – this is not the case with high bitrate video. The challenge for the network engineer is in understanding video technology and its impact on IT infrastructure. Although these standards open the door to an all- IP infrastructure, many broadcasters are looking at a steep learning curve as they begin to adopt IP technologies for live production. IP introduces many new technical and skills challenges. These include jitter, latency and the risk of dropped packets and network asymmetry that results in different path delays upstream and downstream. IP is a complex set of bi-directional protocols requiring knowledge of both the source and des- tination before deployment. NO EASY TASK Deploying IP for live video production applica- tions is effectively the collision of the two worlds of video and network engineering. Video engi- neers are comfortable with the use of SDI, coaxial cable, patch panels, black burst and tri-level sync for timing and above all, monitoring signal qual- ity. The challenge for the video engineer is to understand IT technologies and impact of an IT i Ή™Ι…ΝΡΙՍΡΥΙ”½ΈΡ‘”Ω₯‘•ΌΈ)=ΈΡ‘”½Ρ‘•Θ‘…Ή°Ή•Ρέ½Ι¬•Ή₯Ή••Ί…Ι”™…΅₯±₯…Θ)…Ή½΅™½ΙΡ…‰±”έ₯Ρ °%@™±½έΜ°ΑΙ½Ρ½½±Μ°Ή•Π΄)Q‘”Υ±Ρ₯΅…Ρ”½…°₯́…Έ•Ή΅ΡΌ΅•Ή%@₯Ή™Ι…ΝΡΙՌ΄)ΡΥΙ”°‰ΥЁ•ΡΡ₯ΉœΡ‘•Ι”έ₯±°‰”ΉΌ•…ΝδΡ…Ν¬°…Ή)™•ά₯˜…Ήδ‰Ι½…‘…ΝΡ•Ί…Ι”½₯ΉœΡΌΡ…­±”₯Ё…±°)…Ё½Ή”Έ!՝”₯ΉΩ•ΝΡ΅•ΉΡ́₯Έ•α₯ΝΡ₯ΉœΡ•‘Ή½°΄)½δ…Ήέ½Ι­™±½έ́΅•…ΈΡ‘…ЁΩ₯‘•Ό…ΉΉ•Ρέ½Ι¬)•Ή₯Ή••Ίέ₯±°Ή••Ρ‘”Ρ½½±ΜΡΌ‘₯…Ή½Ν”…Ή)½ΙΙ•±…Ρ”‰½Ρ M$…Ή%@Ν₯Ή…°ΡεΑ•ΜΈM½΅”)΅½Ή₯Ρ½Ι₯Ήœ•ΕΥ₯Α΅•ΉΠ½ΉΩ•ΙΡ́%@₯ΉΑΥΡ́Ν₯Ή…°)‘₯Ι•Ρ±δ₯ΉΡΌ…ΈM$Ν₯Ή…°…Ёё”™Ι½ΉΠ•Ή°‰ΥΠ)ΝՍ …Έ…ΑΑΙ½… ±…­ΜΡΙΥ”%@΅•‘₯„…Ή…±εΝ₯́…Ή)Ρ‘”…‰₯±₯ΡδΡΌ•α…΅₯Ή”Ρ‘”‘…Ρ„Α…­•Ρ́Ѽ‘₯…œ΄)Ή½Ν”%@ΡΙ…™™₯Œ₯ΝΝΥ•ΜΈ)Q‘”₯‘•…°΅½Ή₯Ρ½Ι₯ΉœΝ½±ΥΡ₯½Έ™½Θ„‘ε‰Ι₯%@½M$)Ή•Ρέ½Ι¬₯́½Ή”Ρ‘…Ё…ΈΑ•Ι™½Ι΄„‘₯Ω•ΙΝ”Ω…Ι₯•Ρδ)½˜%@±…ε•Θ΅•…ΝΥΙ•΅•ΉΡ́…́ݕ±°…́΅½Ή₯ѽȁΩ₯‘•Ό)…Ή…Υ‘₯Ό½ΉΡ•ΉΠΈ5½Ή₯Ρ½Ι₯Ήœ…Ή•…Ν”½˜ΥΝ”)…Ι”Ι₯Ρ₯…°ΡΌ•ΉΝΥΙ₯ΉœE½L±•Ω•±Μ…Ι½Ν́½΅Α±•ΰ)‰Ι½…‘…ΝЁ•ΉΩ₯Ι½Ή΅•ΉΡ́ё…ЁΡεΑ₯…±±δ₯ΉΩ½±Ω”)½΅ΑΙ•ΝΝ•…ΉΥΉ½΅ΑΙ•ΝΝ•Ω₯‘•ΌΡΙ…ΉΝ΅₯Μ΄)Ν₯½ΉΜΡ‘ɽ՝ M$…Ή%@Ν₯Ή…°Α…Ρ‘ΜΈQ‘₯́‘…°΄)±•Ή”•Ρ́™…ȁݽΙΝ”₯˜΅Υ±Ρ₯Α±”Ρ½½±Μ…Ι”Ή••‘•)ΡΌΡ•ΝЁ΅₯ᕐM$΄…Ή%@΅‰…Ν•έ½Ι­™±½έ́‘Υ”ΡΌ) Ι½…‘…ΝЁ •…Ё5……ι₯Ή”ƒŠˆέέάΉ‰Ι½…‘…ΝΡ‰•…ΠΉ½΄ƒŠˆ€ΰΔ