fix(lv): ffmpeg doesn't support some input args (#1601)

## Lecture Video
### Resolved Issues
* Fixed: When chatting in Lecture Video mode, the server fails to
generate video frames and include them in the conversation context.

Resolves #1600

Author: ekassos

pingpong/test_video_store.py

@@ -224,10 +224,6 @@ def mock_client_context(*args, **kwargs):
             "1",
             "-multiple_requests",
             "1",
-            "-initial_request_size",
-            "8388608",
-            "-request_size",
-            "8388608",
             "-short_seek_size",
             "8388608",
         ],
@@ -262,10 +258,6 @@ def mock_client_context(*args, **kwargs):
             "1",
             "-multiple_requests",
             "1",
-            "-initial_request_size",
-            "8388608",
-            "-request_size",
-            "8388608",
             "-short_seek_size",
             "8388608",
         ],

pingpong/video_store.py

@@ -84,10 +84,6 @@ class S3VideoStore(BaseVideoStore):
         "1",
         "-multiple_requests",
         "1",
-        "-initial_request_size",
-        "8388608",
-        "-request_size",
-        "8388608",
         "-short_seek_size",
         "8388608",
     ]