Updated some comments to point at bugs in ffmpeg_unittest.cc and ffmpeg_audio_decoder.cc.

media/ffmpeg/ffmpeg_unittest.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// ffmpeg_unittests verify that the parts of the FFmpeg API that Chromium uses
+// function as advertised for each media format that Chromium supports.  This
+// mostly includes stuff like reporting proper timestamps, seeking to
+// keyframes, and supporting certain features like reordered_opaque.
+//
+// Known failures as of r53892:
+//   http://crbug.com/49709
+//     sync1_ogg/FFmpegTest.Seek_Audio/0
+//     sync1_ogv/FFmpegTest.Seek_Audio/0
+//     sync2_ogg/FFmpegTest.Seek_Audio/0
+//     sync2_ogv/FFmpegTest.Seek_Audio/0
+//
+//   http://crbug.com/50457
+//     sync0_webm/FFmpegTest.Decode_Video/0
+//     sync0_webm/FFmpegTest.Duration/0
+//     sync1_webm/FFmpegTest.Decode_Video/0
+//     sync2_webm/FFmpegTest.Decode_Video/0
+
 #include <limits>
 #include <queue>
 
 #include "base/base_paths.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/perftimer.h"
 #include "base/string_util.h"
 #include "base/test/perf_test_suite.h"
@@ skipping 604 matching lines @@
   SeekTo(0.4);
   ReadRemainingFile();
   EXPECT_TRUE(StepDecodeVideo());
   LOG(INFO) << decoded_video_time();
 
   CloseCodecs();
   CloseFile();
 }
 
 }  // namespace media