avcodec/vulkan_encode_av1: fix level index

Revert back to NAN as -1.0 was erroneously to 0.0 to fit in the options
range.

Add special handling of str per requested.

doc/filters.texi

@@ -29101,7 +29101,7 @@ The filter accepts the following options.
 
 @table @option
 @item s
-Set denoising strength for all components. Default is 1.0. Must be in range [1.0, 100.0].
+Set denoising strength for all components. Default is 1.0. Must be in range [0.0, 100.0].
 
 @item p
 Set patch size for all planes. Default is 7. Must be odd number in range [0, 99].
@@ -29110,17 +29110,16 @@ Set patch size for all planes. Default is 7. Must be odd number in range [0, 99]
 Set research size. Default is 15. Must be odd number in range [0, 99].
 
 @item t
-Set parallelism. Default is 36. Must be a number in the range [1, 168].
-Larger values may speed up processing, at the cost of more VRAM.
-Lower values will slow it down, reducing VRAM usage.
-Only supported on GPUs with atomic float operations (RDNA3+, Ampere+).
+Set parallelism. Default is 8. Must be a number in the range [1, 64].
+Larger values will use more VRAM but may not result in greater speed.
+The optimal value is hardware and input dependent.
 
 @item s0
 @item s1
 @item s2
 @item s3
-Set denoising strength for a specific component. Default is @var{1}, equal to @option{s}.
-Must be odd number in range [1, 100].
+Set denoising strength for a specific component. Default is @var{1.0}, equal to @option{s}.
+Must be in range [0.0, 100.0]. 0.0 disables denoising in that component.
 
 @item p0
 @item p1

libavcodec/vulkan_encode_av1.c

@@ -605,7 +605,7 @@ static int init_profile(AVCodecContext *avctx,
                                    enc->tile_cols, framerate);
         if (level) {
             av_log(avctx, AV_LOG_VERBOSE, "Using level %s.\n", level->name);
-            enc->seq_level_idx = ff_vk_av1_level_to_vk(level->level_idx);
+            enc->seq_level_idx = level->level_idx;
         } else {
             av_log(avctx, AV_LOG_VERBOSE, "Stream will not conform to "
                    "any normal level, using level 7.3 by default.\n");

libavformat/movenc.c

@@ -8546,6 +8546,28 @@ static int shift_data(AVFormatContext *s)
     return ff_format_shift_data(s, mov->reserved_header_pos, moov_size);
 }
 
+static void mov_write_mdat_size(AVFormatContext *s)
+{
+    MOVMuxContext *mov = s->priv_data;
+    AVIOContext *pb = s->pb;
+
+    /* Write size of mdat tag */
+    if (mov->mdat_size + 8 <= UINT32_MAX) {
+        avio_seek(pb, mov->mdat_pos, SEEK_SET);
+        avio_wb32(pb, mov->mdat_size + 8);
+        if (mov->flags & FF_MOV_FLAG_HYBRID_FRAGMENTED)
+            ffio_wfourcc(pb, "mdat"); // overwrite the original moov into a mdat
+    } else {
+        /* overwrite 'wide' placeholder atom */
+        avio_seek(pb, mov->mdat_pos - 8, SEEK_SET);
+        /* special value: real atom size will be 64 bit value after
+         * tag field */
+        avio_wb32(pb, 1);
+        ffio_wfourcc(pb, "mdat");
+        avio_wb64(pb, mov->mdat_size + 16);
+    }
+}
+
 static int mov_write_trailer(AVFormatContext *s)
 {
     MOVMuxContext *mov = s->priv_data;
@@ -8605,21 +8627,9 @@ static int mov_write_trailer(AVFormatContext *s)
 
         moov_pos = avio_tell(pb);
 
-        /* Write size of mdat tag */
-        if (mov->mdat_size + 8 <= UINT32_MAX) {
-            avio_seek(pb, mov->mdat_pos, SEEK_SET);
-            avio_wb32(pb, mov->mdat_size + 8);
-            if (mov->flags & FF_MOV_FLAG_HYBRID_FRAGMENTED)
-                ffio_wfourcc(pb, "mdat"); // overwrite the original moov into a mdat
-        } else {
-            /* overwrite 'wide' placeholder atom */
-            avio_seek(pb, mov->mdat_pos - 8, SEEK_SET);
-            /* special value: real atom size will be 64 bit value after
-             * tag field */
-            avio_wb32(pb, 1);
-            ffio_wfourcc(pb, "mdat");
-            avio_wb64(pb, mov->mdat_size + 16);
-        }
+        if (!(mov->flags & FF_MOV_FLAG_HYBRID_FRAGMENTED))
+            mov_write_mdat_size(s);
+
         avio_seek(pb, mov->reserved_moov_size > 0 ? mov->reserved_header_pos : moov_pos, SEEK_SET);
 
         if (mov->flags & FF_MOV_FLAG_FASTSTART) {
@@ -8647,6 +8657,15 @@ static int mov_write_trailer(AVFormatContext *s)
             if ((res = mov_write_moov_tag(pb, mov, s)) < 0)
                 return res;
         }
+
+        if (mov->flags & FF_MOV_FLAG_HYBRID_FRAGMENTED) {
+            // With hybrid fragmentation, only write the mdat size (hiding
+            // the original moov and all the fragments within the mdat)
+            // after we've successfully written the complete moov, to avoid
+            // risk for an unreadable file if writing the final moov fails.
+            mov_write_mdat_size(s);
+        }
+
         res = 0;
     } else {
         mov_auto_flush_fragment(s, 1);