diff --git a/submodules/MediaPlayer/Sources/FFMpegMediaFrameSourceContext.swift b/submodules/MediaPlayer/Sources/FFMpegMediaFrameSourceContext.swift
index 5040178a67..c37daadb40 100644
--- a/submodules/MediaPlayer/Sources/FFMpegMediaFrameSourceContext.swift
+++ b/submodules/MediaPlayer/Sources/FFMpegMediaFrameSourceContext.swift
@@ -124,7 +124,7 @@ private func readPacketCallback(userData: UnsafeMutableRawPointer?, buffer: Unsa
                 let readingOffset = context.readingOffset
                 let readCount = max(0, min(fileSize - readingOffset, Int(bufferSize)))
                 let range = readingOffset ..< (readingOffset + readCount)
-                precondition(readCount < 1 * 1024 * 1024)
+                assert(readCount < 16 * 1024 * 1024)
                 
                 lseek(fd, off_t(range.lowerBound), SEEK_SET)
                 var data = Data(count: readCount)
@@ -147,7 +147,7 @@ private func readPacketCallback(userData: UnsafeMutableRawPointer?, buffer: Unsa
                     let readCount = max(0, min(next.size - readingOffset, Int(bufferSize)))
                     let range = readingOffset ..< (readingOffset + readCount)
                     
-                    precondition(readCount < 1 * 1024 * 1024)
+                    assert(readCount < 16 * 1024 * 1024)
                     
                     let fd = open(next.path, O_RDONLY, S_IRUSR)
                     if fd >= 0 {