With the development of modern agriculture, the prediction of pests and diseases has also joined the high-tech technology, all the automation to prevent, from the collection of pests, to counting, until the final release of pest forecasting, more or less joined the high-tech Information, but these seemingly convenient pest and disease forecasting steps, there are many details to be noted in the middle, let's learn together:
1 simplified program production
1.1 Production equipment
In the past, the pest TV forecasting and editing equipment used in this station, the non-linear editing system with HVHS video recorder as the core, relied on video capture cards, professional video recorders, cameras and other equipment, and invested more than 40,000 yuan. Now that you upgrade to a digital nonlinear editing system, you only need one professional DV camcorder. 720×576 high-quality acquisition of DV tapes can be performed in real time by installing 1394 cards (tens of dollars to several hundred yuan, tens of dollars of 1394 cards with real-time recording VCD format files, etc.) on the computer. And recording, many non-linear editing software such as PREMIEREPRO software integrates the drive control of most brand digital cameras, and can control the camera to rewind, play, record, play back, etc. on the computer, which is easy to operate. The DV camcorder used in this station is SONYSCR-PDX10P, which can record DV tape and more professional DVCAM tape, with digital camera function, and the quality of recorded programs has reached the requirements of current city-level TV stations. In this way, the production equipment of the program is simplified from the previous computer + video capture card + video recorder + analog camera + monitor to the current computer + digital camera + 1394 capture card.
1.2 Production method
One is to fix the content of the program and form a corresponding mode. That is, the title, overall forecast, zoning forecast, and prevention opinions. Practice has proved that for a program with a fixed length of time and a daily broadcast, a standardized production process is formed, which is necessary for quickly drafting the forecast content and shortening the production time. The second is the relative fixed content of the forecast content. Since the length of the program is fixed and the announcer's speech rate is relatively fixed, the number of program words must be determined according to the program time. According to the number of words in each part, the length of the corresponding part is determined (the average speed of the announcer is 4 to 5 words per second), so that the dubbing of the program and the picture are more natural. The third is to make full use of virtual materials to achieve automatic generation of programs. In the past, the production of the program needs to be synthesized multiple times according to the traditional process of editing-rendering-re-editing-re-rendering, which takes a lot of time. The virtual material is the "result" of the multitrack video on the nonlinear editing software timeline. This "result" has not yet been rendered, so it is only "virtual". Instead of using a virtual material program to create a process like "edit - edit - render". The time for intermediate rendering is omitted. In this way, all the operations in the production of the program are saved in the project file, and only the last generation is required. The fourth is to use the image processing software PHOTOSHOP text layer function to simplify text input. The text of the forecast text appearing on the TV screen, the size and position are relatively fixed, and the stroke and filter blurring must be performed (the text is skipped), and the text in the text layer can be modified next time, so the text map is used. After inputting the text and drawing, delete the text layer once, hide one of the layers for the next modification, and then blur the other layer. This speeds up the input of text content. Take these measures, now the program production only needs to modify the corresponding forecast content in the image processing software PHOTOSHOP, save the file with the same Chinese file name, then transfer the project file in PREMIERE, and adjust the length of each part slightly. Generated, thus achieving the initial automation of program production. Now, the production of one episode of the program can be completed in one person for about 2 hours.
2 adjust the program broadcast
2.1 Coordination and division of television stations
In the production of the program, we adhere to the principle of relying on me. According to the specific number of statistics of the pest and disease survey statistic YF-TJ1-1, the station will make a good program screen according to the pest forecasting needs, print out the text content of the forecast, and send people to It is sent to the TV station, and the TV station assigns a special person to be responsible for the post-production of the program, such as dubbing and broadcasting. As long as the program screen and text content are sent to the TV station before 9:00 am, the program can be broadcasted in the column of the day. Practice has proved that this model can ensure the flexibility and timeliness of program production to the maximum extent, and can promptly guide scientific prevention and control through television forecasting when sudden pests occur.
2.2 adjust the program broadcast time
After years of exploration, according to the law of occurrence of pests and diseases of field crops in this city, we gradually adjust the playing time of the annual TV forecast column to April to September. This time span basically covers the occurrence period of major pests and diseases of the field crops in this city.
In this way, the playing time of the program is reduced by half, and the broadcasting cost is greatly reduced (within 1 year, it is less than 10,000 yuan). In the daily broadcast time of the program, in recent years, we have continuously adjusted and insisted on broadcasting after the “Weather Forecast†column, which is highly concerned by farmers. This is more convenient for farmers to watch, and it is also beneficial to gradually increase the ratings of the program. After several years of hard work, the program's farmers' ratings have reached 72%, and the pest TV forecast has become the main way for most farmers in the city to obtain information on crop pest control.
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