diff --git a/subprojects/gst-plugins-base/gst-libs/gst/video/convertframe.c b/subprojects/gst-plugins-base/gst-libs/gst/video/convertframe.c
index 56db5d3432..84a1e5d379 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/video/convertframe.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/video/convertframe.c
@@ -498,7 +498,7 @@ gst_video_convert_frame_context_unref (GstVideoConvertSampleContext * ctx)
    * must not end up here without finish() being called */
   g_warn_if_fail (ctx->pipeline == NULL);
 
-  g_slice_free (GstVideoConvertSampleContext, ctx);
+  g_free (ctx);
 }
 
 static gboolean
@@ -757,7 +757,7 @@ gst_video_convert_sample_async (GstSample * sample,
   /* There's a reference cycle between the context and the pipeline, which is
    * broken up once the finish() is called on the context. At latest when the
    * timeout triggers the context will be freed */
-  ctx = g_slice_new0 (GstVideoConvertSampleContext);
+  ctx = g_new0 (GstVideoConvertSampleContext, 1);
   ctx->ref_count = 1;
   g_mutex_init (&ctx->mutex);
   ctx->sample = gst_sample_ref (sample);
diff --git a/subprojects/gst-plugins-base/gst-libs/gst/video/gstvideodecoder.c b/subprojects/gst-plugins-base/gst-libs/gst/video/gstvideodecoder.c
index 016aa7dd9f..e335668dbe 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/video/gstvideodecoder.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/video/gstvideodecoder.c
@@ -792,7 +792,7 @@ _new_input_state (GstCaps * caps)
   GstStructure *structure;
   const GValue *codec_data;
 
-  state = g_slice_new0 (GstVideoCodecState);
+  state = g_new0 (GstVideoCodecState, 1);
   state->ref_count = 1;
   gst_video_info_init (&state->info);
   if (G_UNLIKELY (!gst_video_info_from_caps (&state->info, caps)))
@@ -809,7 +809,7 @@ _new_input_state (GstCaps * caps)
 
 parse_fail:
   {
-    g_slice_free (GstVideoCodecState, state);
+    g_free (state);
     return NULL;
   }
 }
@@ -821,12 +821,12 @@ _new_output_state (GstVideoFormat fmt, GstVideoInterlaceMode interlace_mode,
 {
   GstVideoCodecState *state;
 
-  state = g_slice_new0 (GstVideoCodecState);
+  state = g_new0 (GstVideoCodecState, 1);
   state->ref_count = 1;
   gst_video_info_init (&state->info);
   if (!gst_video_info_set_interlaced_format (&state->info, fmt, interlace_mode,
           width, height)) {
-    g_slice_free (GstVideoCodecState, state);
+    g_free (state);
     return NULL;
   }
 
@@ -2200,7 +2200,7 @@ struct _Timestamp
 static void
 timestamp_free (Timestamp * ts)
 {
-  g_slice_free (Timestamp, ts);
+  g_free (ts);
 }
 
 static void
@@ -2219,7 +2219,7 @@ gst_video_decoder_add_buffer_info (GstVideoDecoder * decoder,
     return;
   }
 
-  ts = g_slice_new (Timestamp);
+  ts = g_new (Timestamp, 1);
 
   GST_LOG_OBJECT (decoder,
       "adding PTS %" GST_TIME_FORMAT " DTS %" GST_TIME_FORMAT
@@ -2933,7 +2933,7 @@ gst_video_decoder_new_frame (GstVideoDecoder * decoder)
   GstVideoDecoderPrivate *priv = decoder->priv;
   GstVideoCodecFrame *frame;
 
-  frame = g_slice_new0 (GstVideoCodecFrame);
+  frame = g_new0 (GstVideoCodecFrame, 1);
 
   frame->ref_count = 1;
 
diff --git a/subprojects/gst-plugins-base/gst-libs/gst/video/gstvideoencoder.c b/subprojects/gst-plugins-base/gst-libs/gst/video/gstvideoencoder.c
index fcfb15bbdc..2c269e1aa3 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/video/gstvideoencoder.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/video/gstvideoencoder.c
@@ -198,14 +198,14 @@ struct _ForcedKeyUnitEvent
 static void
 forced_key_unit_event_free (ForcedKeyUnitEvent * evt)
 {
-  g_slice_free (ForcedKeyUnitEvent, evt);
+  g_free (evt);
 }
 
 static ForcedKeyUnitEvent *
 forced_key_unit_event_new (GstClockTime running_time, gboolean all_headers,
     guint count)
 {
-  ForcedKeyUnitEvent *evt = g_slice_new0 (ForcedKeyUnitEvent);
+  ForcedKeyUnitEvent *evt = g_new0 (ForcedKeyUnitEvent, 1);
 
   evt->running_time = running_time;
   evt->all_headers = all_headers;
@@ -634,12 +634,12 @@ _new_output_state (GstCaps * caps, GstVideoCodecState * reference)
 {
   GstVideoCodecState *state;
 
-  state = g_slice_new0 (GstVideoCodecState);
+  state = g_new0 (GstVideoCodecState, 1);
   state->ref_count = 1;
   gst_video_info_init (&state->info);
 
   if (!gst_video_info_set_format (&state->info, GST_VIDEO_FORMAT_ENCODED, 0, 0)) {
-    g_slice_free (GstVideoCodecState, state);
+    g_free (state);
     return NULL;
   }
 
@@ -669,12 +669,14 @@ _new_output_state (GstCaps * caps, GstVideoCodecState * reference)
     GST_VIDEO_INFO_MULTIVIEW_FLAGS (tgt) = GST_VIDEO_INFO_MULTIVIEW_FLAGS (ref);
 
     if (reference->mastering_display_info) {
-      state->mastering_display_info = g_slice_dup (GstVideoMasteringDisplayInfo,
-          reference->mastering_display_info);
+      state->mastering_display_info =
+          g_memdup2 (reference->mastering_display_info,
+          sizeof (GstVideoMasteringDisplayInfo));
     }
     if (reference->content_light_level) {
-      state->content_light_level = g_slice_dup (GstVideoContentLightLevel,
-          reference->content_light_level);
+      state->content_light_level =
+          g_memdup2 (reference->content_light_level,
+          sizeof (GstVideoContentLightLevel));
     }
   }
 
@@ -688,7 +690,7 @@ _new_input_state (GstCaps * caps)
   GstStructure *c_struct;
   const gchar *s;
 
-  state = g_slice_new0 (GstVideoCodecState);
+  state = g_new0 (GstVideoCodecState, 1);
   state->ref_count = 1;
   gst_video_info_init (&state->info);
   if (G_UNLIKELY (!gst_video_info_from_caps (&state->info, caps)))
@@ -698,12 +700,12 @@ _new_input_state (GstCaps * caps)
   c_struct = gst_caps_get_structure (caps, 0);
 
   if ((s = gst_structure_get_string (c_struct, "mastering-display-info"))) {
-    state->mastering_display_info = g_slice_new (GstVideoMasteringDisplayInfo);
+    state->mastering_display_info = g_new (GstVideoMasteringDisplayInfo, 1);
     gst_video_mastering_display_info_from_string (state->mastering_display_info,
         s);
   }
   if ((s = gst_structure_get_string (c_struct, "content-light-level"))) {
-    state->content_light_level = g_slice_new (GstVideoContentLightLevel);
+    state->content_light_level = g_new (GstVideoContentLightLevel, 1);
     gst_video_content_light_level_from_string (state->content_light_level, s);
   }
 
@@ -711,7 +713,7 @@ _new_input_state (GstCaps * caps)
 
 parse_fail:
   {
-    g_slice_free (GstVideoCodecState, state);
+    g_free (state);
     return NULL;
   }
 }
@@ -1495,7 +1497,7 @@ gst_video_encoder_new_frame (GstVideoEncoder * encoder, GstBuffer * buf,
   GstVideoEncoderPrivate *priv = encoder->priv;
   GstVideoCodecFrame *frame;
 
-  frame = g_slice_new0 (GstVideoCodecFrame);
+  frame = g_new0 (GstVideoCodecFrame, 1);
 
   frame->ref_count = 1;
 
diff --git a/subprojects/gst-plugins-base/gst-libs/gst/video/gstvideoutils.c b/subprojects/gst-plugins-base/gst-libs/gst/video/gstvideoutils.c
index 03dffcd8fc..f705c74c93 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/video/gstvideoutils.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/video/gstvideoutils.c
@@ -58,7 +58,7 @@ _gst_video_codec_frame_free (GstVideoCodecFrame * frame)
   if (frame->user_data_destroy_notify)
     frame->user_data_destroy_notify (frame->user_data);
 
-  g_slice_free (GstVideoCodecFrame, frame);
+  g_free (frame);
 }
 
 /**
@@ -172,10 +172,10 @@ _gst_video_codec_state_free (GstVideoCodecState * state)
   if (state->codec_data)
     gst_buffer_unref (state->codec_data);
   if (state->mastering_display_info)
-    g_slice_free (GstVideoMasteringDisplayInfo, state->mastering_display_info);
+    g_free (state->mastering_display_info);
   if (state->content_light_level)
-    g_slice_free (GstVideoContentLightLevel, state->content_light_level);
-  g_slice_free (GstVideoCodecState, state);
+    g_free (state->content_light_level);
+  g_free (state);
 }
 
 /**
diff --git a/subprojects/gst-plugins-base/gst-libs/gst/video/video-chroma.c b/subprojects/gst-plugins-base/gst-libs/gst/video/video-chroma.c
index 2a634073df..aef70bc3cb 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/video/video-chroma.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/video/video-chroma.c
@@ -1090,7 +1090,7 @@ gst_video_chroma_resample_new (GstVideoChromaMethod method,
 
   GST_DEBUG ("v_resample %d, factor %d, cosite %d", v_index, v_factor, cosite);
 
-  result = g_slice_new (GstVideoChromaResample);
+  result = g_new (GstVideoChromaResample, 1);
   result->method = method;
   result->site = site;
   result->flags = flags;
@@ -1140,7 +1140,7 @@ gst_video_chroma_resample_free (GstVideoChromaResample * resample)
 {
   g_return_if_fail (resample != NULL);
 
-  g_slice_free (GstVideoChromaResample, resample);
+  g_free (resample);
 }
 
 /**
diff --git a/subprojects/gst-plugins-base/gst-libs/gst/video/video-converter.c b/subprojects/gst-plugins-base/gst-libs/gst/video/video-converter.c
index 9b77eab422..84a91976ff 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/video/video-converter.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/video/video-converter.c
@@ -514,7 +514,7 @@ gst_line_cache_new (GstLineCache * prev)
 {
   GstLineCache *result;
 
-  result = g_slice_new0 (GstLineCache);
+  result = g_new0 (GstLineCache, 1);
   result->lines = g_ptr_array_new ();
   result->prev = prev;
 
@@ -539,7 +539,7 @@ gst_line_cache_free (GstLineCache * cache)
     cache->alloc_line_notify (cache->alloc_line_data);
   gst_line_cache_clear (cache);
   g_ptr_array_unref (cache->lines);
-  g_slice_free (GstLineCache, cache);
+  g_free (cache);
 }
 
 static void
@@ -668,7 +668,7 @@ converter_alloc_new (guint stride, guint n_lines, gpointer user_data,
   ConverterAlloc *alloc;
 
   GST_DEBUG ("stride %d, n_lines %d", stride, n_lines);
-  alloc = g_slice_new0 (ConverterAlloc);
+  alloc = g_new0 (ConverterAlloc, 1);
   alloc->data = g_malloc (stride * n_lines);
   alloc->stride = stride;
   alloc->n_lines = n_lines;
@@ -685,7 +685,7 @@ converter_alloc_free (ConverterAlloc * alloc)
   if (alloc->notify)
     alloc->notify (alloc->user_data);
   g_free (alloc->data);
-  g_slice_free (ConverterAlloc, alloc);
+  g_free (alloc);
 }
 
 static void
@@ -2333,7 +2333,7 @@ gst_video_converter_new_with_pool (const GstVideoInfo * in_info,
   g_return_val_if_fail (in_info->interlace_mode == out_info->interlace_mode,
       NULL);
 
-  convert = g_slice_new0 (GstVideoConverter);
+  convert = g_new0 (GstVideoConverter, 1);
 
   fin = in_info->finfo;
   fout = out_info->finfo;
@@ -2681,7 +2681,7 @@ gst_video_converter_free (GstVideoConverter * convert)
     g_free (convert->tasks_p[i]);
   }
 
-  g_slice_free (GstVideoConverter, convert);
+  g_free (convert);
 }
 
 static gboolean
diff --git a/subprojects/gst-plugins-base/gst-libs/gst/video/video-dither.c b/subprojects/gst-plugins-base/gst-libs/gst/video/video-dither.c
index 92bf0ce5dc..38189d1c5d 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/video/video-dither.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/video/video-dither.c
@@ -380,7 +380,7 @@ gst_video_dither_new (GstVideoDitherMethod method, GstVideoDitherFlags flags,
   GstVideoDither *dither;
   gint i;
 
-  dither = g_slice_new0 (GstVideoDither);
+  dither = g_new0 (GstVideoDither, 1);
   dither->method = method;
   dither->flags = flags;
   dither->format = format;
@@ -398,7 +398,7 @@ gst_video_dither_new (GstVideoDitherMethod method, GstVideoDitherFlags flags,
       dither->depth = 16;
       break;
     default:
-      g_slice_free (GstVideoDither, dither);
+      g_free (dither);
       g_return_val_if_reached (NULL);
       break;
   }
@@ -470,7 +470,7 @@ gst_video_dither_free (GstVideoDither * dither)
   g_return_if_fail (dither != NULL);
 
   g_free (dither->errors);
-  g_slice_free (GstVideoDither, dither);
+  g_free (dither);
 }
 
 /**
diff --git a/subprojects/gst-plugins-base/gst-libs/gst/video/video-info.c b/subprojects/gst-plugins-base/gst-libs/gst/video/video-info.c
index d543e31267..03a2f477d0 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/video/video-info.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/video/video-info.c
@@ -70,7 +70,7 @@ ensure_debug_category (void)
 GstVideoInfo *
 gst_video_info_copy (const GstVideoInfo * info)
 {
-  return g_slice_dup (GstVideoInfo, info);
+  return g_memdup2 (info, sizeof (GstVideoInfo));
 }
 
 /**
@@ -85,7 +85,7 @@ gst_video_info_copy (const GstVideoInfo * info)
 void
 gst_video_info_free (GstVideoInfo * info)
 {
-  g_slice_free (GstVideoInfo, info);
+  g_free (info);
 }
 
 G_DEFINE_BOXED_TYPE (GstVideoInfo, gst_video_info,
@@ -106,7 +106,7 @@ gst_video_info_new (void)
 {
   GstVideoInfo *info;
 
-  info = g_slice_new (GstVideoInfo);
+  info = g_new (GstVideoInfo, 1);
   gst_video_info_init (info);
 
   return info;
diff --git a/subprojects/gst-plugins-base/gst-libs/gst/video/video-overlay-composition.c b/subprojects/gst-plugins-base/gst-libs/gst/video/video-overlay-composition.c
index ea5484ecde..a02556b36a 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/video/video-overlay-composition.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/video/video-overlay-composition.c
@@ -322,7 +322,7 @@ gst_video_overlay_composition_free (GstMiniObject * mini_obj)
   comp->rectangles = NULL;
   comp->num_rectangles = 0;
 
-  g_slice_free (GstVideoOverlayComposition, comp);
+  g_free (comp);
 }
 
 /**
@@ -346,7 +346,7 @@ gst_video_overlay_composition_new (GstVideoOverlayRectangle * rectangle)
   g_return_val_if_fail (GST_IS_VIDEO_OVERLAY_RECTANGLE (rectangle)
       || rectangle == NULL, NULL);
 
-  comp = g_slice_new0 (GstVideoOverlayComposition);
+  comp = g_new0 (GstVideoOverlayComposition, 1);
 
   gst_mini_object_init (GST_MINI_OBJECT_CAST (comp), 0,
       GST_TYPE_VIDEO_OVERLAY_COMPOSITION,
@@ -649,7 +649,7 @@ gst_video_overlay_rectangle_free (GstMiniObject * mini_obj)
   g_free (rect->initial_alpha);
   g_mutex_clear (&rect->lock);
 
-  g_slice_free (GstVideoOverlayRectangle, rect);
+  g_free (rect);
 }
 
 static inline gboolean
@@ -726,7 +726,7 @@ gst_video_overlay_rectangle_new_raw (GstBuffer * pixels,
       NULL);
   g_return_val_if_fail (height > 0 && width > 0, NULL);
 
-  rect = g_slice_new0 (GstVideoOverlayRectangle);
+  rect = g_new0 (GstVideoOverlayRectangle, 1);
 
   gst_mini_object_init (GST_MINI_OBJECT_CAST (rect), 0,
       GST_TYPE_VIDEO_OVERLAY_RECTANGLE,
diff --git a/subprojects/gst-plugins-base/gst-libs/gst/video/video-scaler.c b/subprojects/gst-plugins-base/gst-libs/gst/video/video-scaler.c
index a4d8fb8118..b612a23eb4 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/video/video-scaler.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/video/video-scaler.c
@@ -219,7 +219,7 @@ gst_video_scaler_new (GstVideoResamplerMethod method, GstVideoScalerFlags flags,
   g_return_val_if_fail (in_size != 0, NULL);
   g_return_val_if_fail (out_size != 0, NULL);
 
-  scale = g_slice_new0 (GstVideoScaler);
+  scale = g_new0 (GstVideoScaler, 1);
 
   GST_DEBUG ("%d %u  %u->%u", method, n_taps, in_size, out_size);
 
@@ -279,7 +279,7 @@ gst_video_scaler_free (GstVideoScaler * scale)
   g_free (scale->offset_n);
   g_free (scale->tmpline1);
   g_free (scale->tmpline2);
-  g_slice_free (GstVideoScaler, scale);
+  g_free (scale);
 }
 
 /**
@@ -1147,7 +1147,7 @@ gst_video_scaler_combine_packed_YUV (GstVideoScaler * y_scale,
   g_return_val_if_fail (uv_scale->resampler.max_taps ==
       y_scale->resampler.max_taps, NULL);
 
-  scale = g_slice_new0 (GstVideoScaler);
+  scale = g_new0 (GstVideoScaler, 1);
 
   scale->method = y_scale->method;
   scale->flags = y_scale->flags;