diff --git a/reactos/dll/win32/avifil32/api.c b/reactos/dll/win32/avifil32/api.c
index 9ae26b94311..7f9e768990c 100644
--- a/reactos/dll/win32/avifil32/api.c
+++ b/reactos/dll/win32/avifil32/api.c
@@ -2256,17 +2256,85 @@ HRESULT WINAPI AVIPutFileOnClipboard(PAVIFILE pfile)
 HRESULT WINAPIV AVISaveA(LPCSTR szFile, CLSID * pclsidHandler, AVISAVECALLBACK lpfnCallback,
                         int nStreams, PAVISTREAM pavi, LPAVICOMPRESSOPTIONS lpOptions, ...)
 {
-    FIXME("(%s,%p,%p,0x%08x,%p,%p), stub!\n", debugstr_a(szFile), pclsidHandler, lpfnCallback,
+    va_list vl;
+    int i;
+    HRESULT ret;
+    PAVISTREAM *streams;
+    LPAVICOMPRESSOPTIONS *options;
+
+    TRACE("(%s,%p,%p,%d,%p,%p)\n", debugstr_a(szFile), pclsidHandler, lpfnCallback,
           nStreams, pavi, lpOptions);
 
-    return AVIERR_UNSUPPORTED;
+    if (nStreams <= 0) return AVIERR_BADPARAM;
+
+    streams = HeapAlloc(GetProcessHeap(), 0, nStreams * sizeof(void *));
+    options = HeapAlloc(GetProcessHeap(), 0, nStreams * sizeof(void *));
+    if (!streams || !options)
+    {
+        ret = AVIERR_MEMORY;
+        goto error;
+    }
+
+    streams[0] = pavi;
+    options[0] = lpOptions;
+
+    va_start(vl, lpOptions);
+    for (i = 1; i < nStreams; i++)
+    {
+        streams[i] = va_arg(vl, void *);
+        options[i] = va_arg(vl, void *);
+    }
+    va_end(vl);
+
+    for (i = 0; i < nStreams; i++)
+        TRACE("Pair[%d] - Stream = %p, Options = %p\n", i, streams[i], options[i]);
+
+    ret = AVISaveVA(szFile, pclsidHandler, lpfnCallback, nStreams, streams, options);
+error:
+    HeapFree(GetProcessHeap(), 0, streams);
+    HeapFree(GetProcessHeap(), 0, options);
+    return ret;
 }
 
 HRESULT WINAPIV AVISaveW(LPCWSTR szFile, CLSID * pclsidHandler, AVISAVECALLBACK lpfnCallback,
                         int nStreams, PAVISTREAM pavi, LPAVICOMPRESSOPTIONS lpOptions, ...)
 {
-    FIXME("(%s,%p,%p,0x%08x,%p,%p), stub!\n", debugstr_w(szFile), pclsidHandler, lpfnCallback,
+    va_list vl;
+    int i;
+    HRESULT ret;
+    PAVISTREAM *streams;
+    LPAVICOMPRESSOPTIONS *options;
+
+    TRACE("(%s,%p,%p,%d,%p,%p)\n", debugstr_w(szFile), pclsidHandler, lpfnCallback,
           nStreams, pavi, lpOptions);
 
-    return AVIERR_UNSUPPORTED;
+    if (nStreams <= 0) return AVIERR_BADPARAM;
+
+    streams = HeapAlloc(GetProcessHeap(), 0, nStreams * sizeof(void *));
+    options = HeapAlloc(GetProcessHeap(), 0, nStreams * sizeof(void *));
+    if (!streams || !options)
+    {
+        ret = AVIERR_MEMORY;
+        goto error;
+    }
+
+    streams[0] = pavi;
+    options[0] = lpOptions;
+
+    va_start(vl, lpOptions);
+    for (i = 1; i < nStreams; i++)
+    {
+        streams[i] = va_arg(vl, void *);
+        options[i] = va_arg(vl, void *);
+    }
+    va_end(vl);
+
+    for (i = 0; i < nStreams; i++)
+        TRACE("Pair[%d] - Stream = %p, Options = %p\n", i, streams[i], options[i]);
+
+    ret = AVISaveVW(szFile, pclsidHandler, lpfnCallback, nStreams, streams, options);
+error:
+    HeapFree(GetProcessHeap(), 0, streams);
+    HeapFree(GetProcessHeap(), 0, options);
+    return ret;
 }
diff --git a/reactos/dll/win32/avifil32/avifile.c b/reactos/dll/win32/avifil32/avifile.c
index bbf825322c0..f1f65091d3a 100644
--- a/reactos/dll/win32/avifil32/avifile.c
+++ b/reactos/dll/win32/avifil32/avifile.c
@@ -1968,13 +1968,17 @@ static HRESULT AVIFILE_ParseIndex(const IAVIFileImpl *This, AVIINDEXENTRY *lp,
     if (nStream > This->fInfo.dwStreams)
       return AVIERR_BADFORMAT;
 
+    /* Video frames can be either indexed in a relative position to the
+     * "movi" chunk or in a absolute position in the file. If the index
+     * is relative the frame offset will always be so small that it will
+     * virtually never reach the "movi" offset so we can detect if the
+     * video is relative very fast.
+     */
     if (*bAbsolute && lp->dwChunkOffset < This->dwMoviChunkPos)
       *bAbsolute = FALSE;
 
-    if (*bAbsolute)
-      lp->dwChunkOffset += sizeof(DWORD);
-    else
-      lp->dwChunkOffset += pos;
+    if (!*bAbsolute)
+      lp->dwChunkOffset += pos; /* make the offset absolute */
 
     if (FAILED(AVIFILE_AddFrame(This->ppStreams[nStream], lp->ckid, lp->dwChunkLength, lp->dwChunkOffset, lp->dwFlags)))
       return AVIERR_MEMORY;
diff --git a/reactos/dll/win32/avifil32/icmstream.c b/reactos/dll/win32/avifil32/icmstream.c
index 8f017904829..60b73efd76f 100644
--- a/reactos/dll/win32/avifil32/icmstream.c
+++ b/reactos/dll/win32/avifil32/icmstream.c
@@ -756,11 +756,11 @@ static HRESULT AVIFILE_EncodeFrame(IAVIStreamImpl *This,
   if (This->lKeyFrameEvery != 0) {
     if (This->lCurrent == This->sInfo.dwStart) {
       if (idxFlags & AVIIF_KEYFRAME) {
-	/* for keyframes allow to consume all unused bytes */
+	/* allow keyframes to consume all unused bytes */
 	dwRequest = This->dwBytesPerFrame + This->dwUnusedBytes;
 	This->dwUnusedBytes = 0;
       } else {
-	/* for non-keyframes only allow something of the unused bytes to be consumed */
+	/* for non-keyframes only allow some of the unused bytes to be consumed */
 	DWORD tmp1 = 0;
 	DWORD tmp2;
 
@@ -782,8 +782,8 @@ static HRESULT AVIFILE_EncodeFrame(IAVIStreamImpl *This,
       dwRequest = MAX_FRAMESIZE;
   }
 
-  /* must we check for framesize to gain requested
-   * datarate or could we trust codec? */
+  /* must we check for frame size to gain the requested
+   * data rate or can we trust the codec? */
   doSizeCheck = (dwRequest != 0 && ((This->dwICMFlags & (VIDCF_CRUNCH|VIDCF_QUALITY)) == 0));
 
   dwMaxQual = dwCurQual = This->sInfo.dwQuality;
diff --git a/reactos/media/doc/README.WINE b/reactos/media/doc/README.WINE
index 02a3975fd38..7dd08b3d25b 100644
--- a/reactos/media/doc/README.WINE
+++ b/reactos/media/doc/README.WINE
@@ -48,7 +48,7 @@ reactos/dll/win32/advpack             # Synced to WineStaging-1.7.55
 reactos/dll/win32/atl                 # Synced to WineStaging-1.7.55
 reactos/dll/win32/atl80               # Synced to WineStaging-1.7.55
 reactos/dll/win32/atl100              # Synced to WineStaging-1.7.55
-reactos/dll/win32/avifil32            # Synced to WineStaging-1.7.47
+reactos/dll/win32/avifil32            # Synced to WineStaging-1.7.55
 reactos/dll/win32/bcrypt              # Synced to WineStaging-1.7.47
 reactos/dll/win32/browseui            # Out of sync
 reactos/dll/win32/cabinet             # Synced to WineStaging-1.7.47