Certificate

I must suggest that Camera and Lighting are the technical Learnings and a Combination of these with some Creative-Literary courses can do wonders.
Please read the following suggestions shared for other query but edited for you: (Your Stream) is a Specialisation domain and there may be many things that you will need to Keep Learning along with the Camera and Lighting Learning.
The suggestions that I can make are :
1 A Degree in a popular Language that shall be used in your works and place
2 Content Writing and Proof Reading
3. Web Development and Digital Marketing
4. Music and Sound Mixing Basics/Audio Production
5. Advertising and Public Relations Management
6. A Camera and Light Person should also learn more about Management and Business Admin.
The decision depends on how much time you get free from the work of learning Documentary Production. When you say that you are learning the Production of Documentary-I take it as a Comprehensive work that is itself a time-taking thing and might not allow you to venture for more.
Read the related Question which gives a similar solution:
https://ask.shiksha.com/what-parallel-courses-can-i-pursue-with-a-certificate-course-in-radio-jockeying-for-better-career-prospects-qna-4393561
https://ask.shiksha.com/what-parallel-courses-can-i-pursue-with-a-certificate-in-documentary-production-for-better-career-prospects-qna-4392890

Documentary Production is a Specialization domain, and there may be many things that you will need to Keep Learning along with the Production Learning.
The suggestions that I can make are:
1 A Degree in a popular Language that shall be used in your works and place
2 Content Writing and Proof Reading
3. Web Development and Digital Marketing
4. Music and Sound Mixing Basics/Audio Production
5. Advertising and Public Relations Management
The decision depends on how much time you get free from the work of learning Documentary Production. When you say that you are learning the Production of Documentary-I take it as a Comprehensive work that is itself a time-taking thing and might not allow you to venture for more.
Read the related Question which gives a similar solution:
https://ask.shiksha.com/what-parallel-courses-can-i-pursue-with-a-certificate-course-in-radio-jockeying-for-better-career-prospects-qna-4393561

The Certificate you are pursuing in Editing and Proof Reading is a good way to join the Media jobs, as Content Writing and Content Editing-Proof Reading is quite a good career. From Media/Journalism Writings to Website Developments, this task has a role.
You may think of the following courses depending on the qualifications you already have:
1. If the current course is done after doing graduation then a Post-Graduation in Mass Communication/Mass Media/Media Production can also be good for you. I shall not hesitate to suggest even a Master Degree in A Language- English, Hindi or the one you see as an additional strength for editing and proofreading works.
2. If one does Certificate in Proofreading and Editing after class 12th, pursue Graduation as a must to do thing. Any Stream you may choose keeping in mind that an Alternative Career has to be met openly. Proofreading and Editing Job can also be a part-time thing so you have enough time to do another degree or Higher Studies.
3. If this Certificate Course is done by someone who is a Master Degree Holder, if not in Language or Social Science, Humanities, do one degree.

The answer is a big no.
Audio-video editing requires a candidate to not only learn the intricacies of the software, but also learn minor things like how to dump an audio/video file from the camera/any other recording equipment to the computer. This isn't something one can mug up from text books or internet because it requires the concerned person to learn the skills over time and enhance them for the better under able guidance of the teachers who can help in sorting of the pros and cons one needs to take care of during editing.
Also, an audio/video editor should also have a better insight into how can one record/shoot a certain audio/video in a way that least editing is required on the system. Without practical experience at the editing desk, this will be a task which will be very difficult to complete.
And this holds true for India as well as abroad.

The cinematography is all about the art as well as skills to make the best of camera and place for the shoot of a film. This skill is possessed by those who have sharp minds, quick hearts and minds and strong observation skills. The essentials of becoming a cinematographer are so complex and elite that we can not think of acquiring them in isolation. A distance mode degree for the sake of making an educational qualification and eligibility may be fine but someone to be called a cinematographer just because a degree or certificate was done via distance mode, that is not praiseworthy.
It is not worth pursuing a certificate from distance learning in India or from anywhere because this 'media' thing needs real learning which is more than the classroom. Such learnings and experiences come when the cameraman gets time to learn the nuances and advanced things at a dedicated place.
If we allow distance learning to run and sell such a course and people start doing the same, it will be tough for the field of videography and photography or even film-making to get people who actually know what to do.
Creative aspects of learning are developed when a class meets. Hence, we may not suggest a total distance mode course in camera works or lighting or direction or even acting. Practical learning has to be there, at any cost.
It is not worth doing any course which needs professional competence which is developed by personal contact with the institution and in regular classes.
Read the following:
https://ask.shiksha.com/what-are-the-career-prospects-in-india-and-abroad-for-certificate-course-in-cinematography-qna-4393195
https://ask.shiksha.com/is-it-worth-to-pursue-a-certificate-course-in-videography-from-distance-learning-in-india-and-why-qna-4392997

Videography is meant to be something with the camera and is not advised through distance mode.
The above things cannot be imparted through distance mode and that's is why it is not advised to have a course in acting or even anchoring through distance.
These areas of expertise are not theory subjects and can never be made a theory based alone.The students need exposure and real-time experience.
It is not worth pursuing a certificate from distance in India or from anywhere because this 'media' thing needs real learning which is more than the classroom. Such learnings and experiences come when the cameraman gets time to learn the nuances and advanced things at a dedicated place.
If we allow distance learning to run and sell such a course and people start doing the same, it will be tough for the field of videography and photography or even film-making to get people who actually know what to do.
Creative aspects of learning are developed when a class meets. Hence, we may not suggest a total distance mode course in camera works or lighting or direction or even acting. Practical learning has to be there, at any cost.
It is not worth doing any course which needs professional competence which is developed by personal contact with the institution and in regular classes.
There are many aspects of media-related courses and it should be clear to us that distance learning cannot develop the level of skills and competence that regular courses can do.
It is possible that one does distance learning studies when a foundational skill-set is already earned.
Please refer to the following replies as the same type of response is needed here as well (read your query subject in place of performing arts or editing):
Distance learning was not devised as an alternative to classroom learning or practical learning with the teachers.The same applies to the question as well. FCP is something which is a special learning and through the distance mode, I do not think that it is possible to comprehend and learn the best of FCP like tool through distance. Besides, in India, we do not have that strong and fault-free delivery system of distance learning programmes.

It is not worth pursuing a certificate in camera and lighting from distance learning in India or from anywhere because this 'camera' thing needs real learning which is more than the classroom. Such learnings and experiences come when the cameraman gets time to learn the nuances and advanced things at a dedicated place.
If we allow distance learning to run and sell such a course and people start doing the same, it will be tough for the field of videography and photography or even film-making to get people who actually know what to do.
Creative aspects of learning are developed when a class meets. Hence, we may not suggest a total distance mode course in camera works or lighting or direction or even acting. Practical learning has to be there, at any cost.
It is not worth doing any course which needs professional competence which is developed by personal contact with the institution and in regular classes.
There are many aspects of media-related courses and it should be clear to us that distance learning cannot develop the level of skills and competence that regular courses can do.
It is possible that one does distance learning studies when a foundational skill-set is already earned.
Please refer to the following replies as the same type of response is needed here as well (read your query subject in place of performing arts or editing):
Distance learning was not devised as an alternative to classroom learning or practical learning with the teachers.The same applies to the question as well. FCP is something which is a special learning and through the distance mode, I do not think that it is possible to comprehend and learn the best of FCP like tool through distance. Besides, in India, we do not have that strong and fault-free delivery system of distance learning programmes.

Editing and proof-reading (text related) are practically learned skills and shall need serious observation-based studies. The real learning not really possible in distance mode in the absence of a structured contact programmes. It is advised that some regular learning plan should assist in the distance mode learning which otherwise is not good for courses of media-editing or proof-reading. I am still not denying that distance learning cannot teach the above two things. If you would have meant video editing then there would have been a strong no to distance mode.
It is not worth doing any course which needs professional competence which is developed by personal contact with the institution and in regular classes.
There are many aspects of media-related courses and it should be clear to us that distance learning cannot develop the level of skills and competence that regular courses can do.
It is possible that one does distance learning studies when a foundational skill-set is already earned.
Please refer to the following replies as the same type of response is needed here as well (read your query subject in place of performing arts or editing):
Distance learning was not devised as an alternative to classroom learning or practical learning with the teachers.The same applies to the question as well. FCP is something which is a special learning and through the distance mode, I do not think that it is possible to comprehend and learn the best of FCP like tool through distance. Besides, in India, we do not have that strong and fault-free delivery system of distance learning programmes.