--- a/dom/media/MediaPrefs.h
+++ b/dom/media/MediaPrefs.h
@@ -114,19 +114,21 @@ private:
 #ifdef MOZ_WIDGET_ANDROID
   DECL_MEDIA_PREF("media.android-media-codec.enabled",        PDMAndroidMediaCodecEnabled, bool, false);
   DECL_MEDIA_PREF("media.android-media-codec.preferred",      PDMAndroidMediaCodecPreferred, bool, false);
 #endif
 #ifdef MOZ_FFMPEG
   DECL_MEDIA_PREF("media.ffmpeg.enabled",                     PDMFFmpegEnabled, bool, true);
   DECL_MEDIA_PREF("media.libavcodec.allow-obsolete",          LibavcodecAllowObsolete, bool, false);
 #endif
+#if defined(MOZ_FFMPEG) || defined(MOZ_FFVPX)
+  DECL_MEDIA_PREF("media.ffmpeg.low-latency.enabled",         PDMFFmpegLowLatencyEnabled, bool, false);
+#endif
 #ifdef MOZ_FFVPX
   DECL_MEDIA_PREF("media.ffvpx.enabled",                      PDMFFVPXEnabled, bool, true);
-  DECL_MEDIA_PREF("media.ffvpx.low-latency.enabled",          PDMFFVPXLowLatencyEnabled, bool, false);
 #endif
 #ifdef XP_WIN
   DECL_MEDIA_PREF("media.wmf.enabled",                        PDMWMFEnabled, bool, true);
   DECL_MEDIA_PREF("media.wmf.skip-blacklist",                 PDMWMFSkipBlacklist, bool, false);
   DECL_MEDIA_PREF("media.decoder-doctor.wmf-disabled-is-failure", DecoderDoctorWMFDisabledIsFailure, bool, false);
   DECL_MEDIA_PREF("media.wmf.vp9.enabled",                    PDMWMFVP9DecoderEnabled, bool, true);
   DECL_MEDIA_PREF("media.wmf.decoder.thread-count",           PDMWMFThreadCount, int32_t, -1);
   DECL_MEDIA_PREF("media.wmf.allow-unsupported-resolutions",  PDMWMFAllowUnsupportedResolutions, bool, false);

--- a/dom/media/platforms/ffmpeg/FFmpegDecoderModule.h
+++ b/dom/media/platforms/ffmpeg/FFmpegDecoderModule.h
@@ -37,17 +37,17 @@ public:
     // Bug 1263836 will handle alpha scenario once implemented. It will shift
     // the check for alpha to PDMFactory but not itself remove the need for a
     // check.
     if (aParams.VideoConfig().HasAlpha()) {
       return nullptr;
     }
     if (aParams.mOptions.contains(
           CreateDecoderParams::Option::LowLatency) &&
-        !MediaPrefs::PDMFFVPXLowLatencyEnabled()) {
+        !MediaPrefs::PDMFFmpegLowLatencyEnabled()) {
       return nullptr;
     }
     RefPtr<MediaDataDecoder> decoder = new FFmpegVideoDecoder<V>(
       mLib,
       aParams.mTaskQueue,
       aParams.VideoConfig(),
       aParams.mImageContainer,
       aParams.mOptions.contains(CreateDecoderParams::Option::LowLatency));

--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -356,17 +356,19 @@ pref("media.wmf.disable-d3d9-for-dlls", 
 pref("media.ffmpeg.enabled", false);
 #else
 pref("media.ffmpeg.enabled", true);
 #endif
 pref("media.libavcodec.allow-obsolete", false);
 #endif
 #if defined(MOZ_FFVPX)
 pref("media.ffvpx.enabled", true);
-pref("media.ffvpx.low-latency.enabled", false);
+#endif
+#if defined(MOZ_FFMPEG) || defined(MOZ_FFVPX)
+pref("media.ffmpeg.low-latency.enabled", false);
 #endif
 pref("media.gmp.decoder.enabled", false);
 pref("media.gmp.decoder.aac", 0);
 pref("media.gmp.decoder.h264", 0);
 #ifdef MOZ_RAW
 pref("media.raw.enabled", true);
 #endif
 pref("media.ogg.enabled", true);