diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index e6044d54a020565c9a2ab5252b09802bc276eb55..102c3d5d1164489fbe48464c30fe021d9eae115e 100644
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -670,7 +670,7 @@ static int decode_ga_specific_config(AACContext *ac, AVCodecContext *avctx,
     int tags = 0;
 
     if (get_bits1(gb)) { // frameLengthFlag
-        av_log_missing_feature(avctx, "960/120 MDCT window", 1);
+        avpriv_request_sample(avctx, "960/120 MDCT window");
         return AVERROR_PATCHWELCOME;
     }
 
@@ -1660,7 +1660,7 @@ static int decode_ics(AACContext *ac, SingleChannelElement *sce,
         if ((tns->present = get_bits1(gb)) && decode_tns(ac, tns, gb, ics))
             return -1;
         if (get_bits1(gb)) {
-            av_log_missing_feature(ac->avctx, "SSR", 1);
+            avpriv_request_sample(ac->avctx, "SSR");
             return AVERROR_PATCHWELCOME;
         }
     }
@@ -2620,8 +2620,8 @@ static int latm_decode_audio_specific_config(struct LATMContext *latmctx,
         asclen         = get_bits_left(gb);
 
     if (config_start_bit % 8) {
-        av_log_missing_feature(latmctx->aac_ctx.avctx,
-                               "Non-byte-aligned audio-specific config", 1);
+        avpriv_request_sample(latmctx->aac_ctx.avctx,
+                              "Non-byte-aligned audio-specific config");
         return AVERROR_PATCHWELCOME;
     }
     if (asclen <= 0)
@@ -2675,8 +2675,7 @@ static int read_stream_mux_config(struct LATMContext *latmctx,
         skip_bits(gb, 6);                       // numSubFrames
         // numPrograms
         if (get_bits(gb, 4)) {                  // numPrograms
-            av_log_missing_feature(latmctx->aac_ctx.avctx,
-                                   "Multiple programs", 1);
+            avpriv_request_sample(latmctx->aac_ctx.avctx, "Multiple programs");
             return AVERROR_PATCHWELCOME;
         }
 
@@ -2684,8 +2683,7 @@ static int read_stream_mux_config(struct LATMContext *latmctx,
 
         // for each layer (which there is only on in DVB)
         if (get_bits(gb, 3)) {                   // numLayer
-            av_log_missing_feature(latmctx->aac_ctx.avctx,
-                                   "Multiple layers", 1);
+            avpriv_request_sample(latmctx->aac_ctx.avctx, "Multiple layers");
             return AVERROR_PATCHWELCOME;
         }
 
diff --git a/libavcodec/aacsbr.c b/libavcodec/aacsbr.c
index de63b8025d4724f33135edd0cdec94c609fe894f..650f7aa7e23c8528063c934763f5e3194161e0f9 100644
--- a/libavcodec/aacsbr.c
+++ b/libavcodec/aacsbr.c
@@ -927,7 +927,7 @@ static void read_sbr_extension(AACContext *ac, SpectralBandReplication *sbr,
         }
         break;
     default:
-        av_log_missing_feature(ac->avctx, "Reserved SBR extensions", 1);
+        avpriv_request_sample(ac->avctx, "Reserved SBR extensions");
         skip_bits_long(gb, *num_bits_left); // bs_fill_bits
         *num_bits_left = 0;
         break;
diff --git a/libavcodec/ac3dec.c b/libavcodec/ac3dec.c
index 407940d19da6a90ae47ec9179197bd1105ac810e..abfd380b822c532bd05c36eecf1ff4a9b6b9e013 100644
--- a/libavcodec/ac3dec.c
+++ b/libavcodec/ac3dec.c
@@ -874,7 +874,7 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
             /* check for enhanced coupling */
             if (s->eac3 && get_bits1(gbc)) {
                 /* TODO: parse enhanced coupling strategy info */
-                av_log_missing_feature(s->avctx, "Enhanced coupling", 1);
+                avpriv_request_sample(s->avctx, "Enhanced coupling");
                 return AVERROR_PATCHWELCOME;
             }
 
diff --git a/libavcodec/amrnbdec.c b/libavcodec/amrnbdec.c
index 36df41daf7b5644fac9646a55c580ba525def6ba..fcaaab386fa32547363230b2a84fbb9e3e338390 100644
--- a/libavcodec/amrnbdec.c
+++ b/libavcodec/amrnbdec.c
@@ -957,7 +957,7 @@ static int amrnb_decode_frame(AVCodecContext *avctx, void *data,
         return AVERROR_INVALIDDATA;
     }
     if (p->cur_frame_mode == MODE_DTX) {
-        av_log_missing_feature(avctx, "dtx mode", 1);
+        avpriv_request_sample(avctx, "dtx mode");
         return AVERROR_PATCHWELCOME;
     }
 
diff --git a/libavcodec/amrwbdec.c b/libavcodec/amrwbdec.c
index e057829fd7981fe878d39135bd5e44fd07d07074..c875d8199533dc11da26212d54e8677e965adc4f 100644
--- a/libavcodec/amrwbdec.c
+++ b/libavcodec/amrwbdec.c
@@ -1117,7 +1117,7 @@ static int amrwb_decode_frame(AVCodecContext *avctx, void *data,
         av_log(avctx, AV_LOG_ERROR, "Encountered a bad or corrupted frame\n");
 
     if (ctx->fr_cur_mode == MODE_SID) { /* Comfort noise frame */
-        av_log_missing_feature(avctx, "SID mode", 1);
+        avpriv_request_sample(avctx, "SID mode");
         return AVERROR_PATCHWELCOME;
     }
 
diff --git a/libavcodec/eac3dec.c b/libavcodec/eac3dec.c
index 3a80cb146966faebf7ffc46c61ea805c0ffe2aef..baba454fd6d8fad1c2a5f29ee9ac7752acf35a0d 100644
--- a/libavcodec/eac3dec.c
+++ b/libavcodec/eac3dec.c
@@ -300,7 +300,7 @@ int ff_eac3_parse_header(AC3DecodeContext *s)
        application can select from. each independent stream can also contain
        dependent streams which are used to add or replace channels. */
     if (s->frame_type == EAC3_FRAME_TYPE_DEPENDENT) {
-        av_log_missing_feature(s->avctx, "Dependent substream decoding", 1);
+        avpriv_request_sample(s->avctx, "Dependent substream decoding");
         return AAC_AC3_PARSE_ERROR_FRAME_TYPE;
     } else if (s->frame_type == EAC3_FRAME_TYPE_RESERVED) {
         av_log(s->avctx, AV_LOG_ERROR, "Reserved frame type\n");
@@ -312,7 +312,7 @@ int ff_eac3_parse_header(AC3DecodeContext *s)
        associated to an independent stream have matching substream id's. */
     if (s->substreamid) {
         /* only decode substream with id=0. skip any additional substreams. */
-        av_log_missing_feature(s->avctx, "Additional substreams", 1);
+        avpriv_request_sample(s->avctx, "Additional substreams");
         return AAC_AC3_PARSE_ERROR_FRAME_TYPE;
     }
 
@@ -321,7 +321,7 @@ int ff_eac3_parse_header(AC3DecodeContext *s)
            rates in bit allocation.  The best assumption would be that it is
            handled like AC-3 DolbyNet, but we cannot be sure until we have a
            sample which utilizes this feature. */
-        av_log_missing_feature(s->avctx, "Reduced sampling rate", 1);
+        avpriv_request_sample(s->avctx, "Reduced sampling rate");
         return AVERROR_PATCHWELCOME;
     }
     skip_bits(gbc, 5); // skip bitstream id
@@ -593,7 +593,7 @@ int ff_eac3_parse_header(AC3DecodeContext *s)
            It is likely the offset of each block within the frame. */
         int block_start_bits = (s->num_blocks-1) * (4 + av_log2(s->frame_size-2));
         skip_bits_long(gbc, block_start_bits);
-        av_log_missing_feature(s->avctx, "Block start info", 1);
+        avpriv_request_sample(s->avctx, "Block start info");
     }
 
     /* syntax state initialization */
diff --git a/libavcodec/flashsv.c b/libavcodec/flashsv.c
index 26b42e5442a1d35e820b1352858043417dac8f92..2fbe221bfa0eacd8d44be9cb01a5fa575eb9741d 100644
--- a/libavcodec/flashsv.c
+++ b/libavcodec/flashsv.c
@@ -259,11 +259,11 @@ static int flashsv_decode_frame(AVCodecContext *avctx, void *data,
     if (s->ver == 2) {
         skip_bits(&gb, 6);
         if (get_bits1(&gb)) {
-            av_log_missing_feature(avctx, "iframe", 1);
+            avpriv_request_sample(avctx, "iframe");
             return AVERROR_PATCHWELCOME;
         }
         if (get_bits1(&gb)) {
-            av_log_missing_feature(avctx, "Custom palette", 1);
+            avpriv_request_sample(avctx, "Custom palette");
             return AVERROR_PATCHWELCOME;
         }
     }
@@ -394,7 +394,7 @@ static int flashsv_decode_frame(AVCodecContext *avctx, void *data,
                     int row = get_bits(&gb, 8);
                     av_log(avctx, AV_LOG_DEBUG, "%dx%d zlibprime_curr %dx%d\n", i, j, col, row);
                     size -= 2;
-                    av_log_missing_feature(avctx, "zlibprime_curr", 1);
+                    avpriv_request_sample(avctx, "zlibprime_curr");
                     return AVERROR_PATCHWELCOME;
                 }
                 if (!s->blocks && (s->zlibprime_curr || s->zlibprime_prev)) {
diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index 2e9487cd5ce2a53e9cf9165a55783f0c210b2e49..9b196c711da6dc4660de9d2a17ec12c2ca20aaf1 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -2884,8 +2884,8 @@ static int h264_set_parameter_from_sps(H264Context *h)
         h->avctx->has_b_frames = !h->low_delay;
 
     if (h->sps.bit_depth_luma != h->sps.bit_depth_chroma) {
-        av_log_missing_feature(h->avctx,
-            "Different bit depth between chroma and luma", 1);
+        avpriv_request_sample(h->avctx,
+                              "Different chroma and luma bit depth");
         return AVERROR_PATCHWELCOME;
     }
 
diff --git a/libavcodec/mimic.c b/libavcodec/mimic.c
index ecd837088d61209d585f28e306b6375efc34aa24..0fe83137bbeebead22b0751cf055b29f732e12a5 100644
--- a/libavcodec/mimic.c
+++ b/libavcodec/mimic.c
@@ -389,7 +389,7 @@ static int mimic_decode_frame(AVCodecContext *avctx, void *data,
             ctx->num_hblocks[i] =     width   >> (3 + !!i);
         }
     } else if (width != ctx->avctx->width || height != ctx->avctx->height) {
-        av_log_missing_feature(avctx, "resolution changing", 1);
+        avpriv_request_sample(avctx, "Resolution changing");
         return AVERROR_PATCHWELCOME;
     }
 
diff --git a/libavcodec/mpc8.c b/libavcodec/mpc8.c
index 7f920d8b542e678e0ed22e933968c524986e6125..d14b8f14f19ffcb1c529823c36dcefaf546e0fda 100644
--- a/libavcodec/mpc8.c
+++ b/libavcodec/mpc8.c
@@ -130,7 +130,7 @@ static av_cold int mpc8_decode_init(AVCodecContext * avctx)
     c->maxbands = get_bits(&gb, 5) + 1;
     channels = get_bits(&gb, 4) + 1;
     if (channels > 2) {
-        av_log_missing_feature(avctx, "Multichannel MPC SV8", 1);
+        avpriv_request_sample(avctx, "Multichannel MPC SV8");
         return AVERROR_PATCHWELCOME;
     }
     c->MSS = get_bits1(&gb);
diff --git a/libavcodec/rv10.c b/libavcodec/rv10.c
index 7fd4ddfa42972ef8b5b1d7a3c9372d833fea6c00..6ccc85d3d673013a3639e3f23ffa287539528481 100644
--- a/libavcodec/rv10.c
+++ b/libavcodec/rv10.c
@@ -459,7 +459,7 @@ static av_cold int rv10_decode_init(AVCodecContext *avctx)
         break;
     default:
         av_log(s->avctx, AV_LOG_ERROR, "unknown header %X\n", rv->sub_id);
-        av_log_missing_feature(avctx, "RV1/2 version", 1);
+        avpriv_request_sample(avctx, "RV1/2 version");
         return AVERROR_PATCHWELCOME;
     }
 
diff --git a/libavcodec/smc.c b/libavcodec/smc.c
index d16242bf506a8c22e4007468c385cbd3bce86af6..2fcf61fa2db37d1261761a789a42c4bc87a8fe93 100644
--- a/libavcodec/smc.c
+++ b/libavcodec/smc.c
@@ -402,7 +402,7 @@ static void smc_decode_stream(SmcContext *s)
             break;
 
         case 0xF0:
-            av_log_missing_feature(s->avctx, "0xF0 opcode", 1);
+            avpriv_request_sample(s->avctx, "0xF0 opcode");
             break;
         }
     }
diff --git a/libavcodec/takdec.c b/libavcodec/takdec.c
index a9b8c6664c622e8f82d470b4ba4787f99f7241a2..4047513e0fd7c69ad9e581b99d7a2bc761b934cd 100644
--- a/libavcodec/takdec.c
+++ b/libavcodec/takdec.c
@@ -685,7 +685,7 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
         return ret;
 
     if (s->ti.flags & TAK_FRAME_FLAG_HAS_METADATA) {
-        av_log_missing_feature(avctx, "frame metadata", 1);
+        avpriv_request_sample(avctx, "Frame metadata");
         return AVERROR_PATCHWELCOME;
     }
 
diff --git a/libavcodec/truemotion2.c b/libavcodec/truemotion2.c
index 342cb05e15b4daec1549cebd41d5d2c21ae3927f..a4d01cb0c5159ff9905d3009fdc730aa6101d296 100644
--- a/libavcodec/truemotion2.c
+++ b/libavcodec/truemotion2.c
@@ -226,7 +226,7 @@ static inline int tm2_read_header(TM2Context *ctx, const uint8_t *buf)
 
     switch (magic) {
     case TM2_OLD_HEADER_MAGIC:
-        av_log_missing_feature(ctx->avctx, "TM2 old header", 1);
+        avpriv_request_sample(ctx->avctx, "Old TM2 header");
         return 0;
     case TM2_NEW_HEADER_MAGIC:
         return 0;
diff --git a/libavcodec/tta.c b/libavcodec/tta.c
index 05ada5972d829f902d091cebe1abc58fc6b91a10..b496452bb47ae1bf2f7aa29b3bc1a80628e0e356 100644
--- a/libavcodec/tta.c
+++ b/libavcodec/tta.c
@@ -222,7 +222,7 @@ static av_cold int tta_decode_init(AVCodecContext * avctx)
             return -1;
         }
         if (s->format == FORMAT_ENCRYPTED) {
-            av_report_missing_feature(s->avctx, "Encrypted TTA");
+            avpriv_report_missing_feature(s->avctx, "Encrypted TTA");
             return AVERROR_PATCHWELCOME;
         }
         avctx->channels = s->channels = get_bits(&s->gb, 16);
diff --git a/libavcodec/vp8.c b/libavcodec/vp8.c
index 4d4ff6ca2d659329e998c5eab41d9b43f96f178e..babbff490110e4604ec82f8907335418264c28b8 100644
--- a/libavcodec/vp8.c
+++ b/libavcodec/vp8.c
@@ -337,7 +337,7 @@ static int decode_frame_header(VP8Context *s, const uint8_t *buf, int buf_size)
         buf_size -= 7;
 
         if (hscale || vscale)
-            av_log_missing_feature(s->avctx, "Upscaling", 1);
+            avpriv_request_sample(s->avctx, "Upscaling");
 
         s->update_golden = s->update_altref = VP56_FRAME_CURRENT;
         for (i = 0; i < 4; i++)
diff --git a/libavcodec/wmalosslessdec.c b/libavcodec/wmalosslessdec.c
index 6b3aca8963a366e8045f0d30a7c8146d6cfb2b50..7c08f1ba4c72a76701aa1d4188b696cf1325cb3d 100644
--- a/libavcodec/wmalosslessdec.c
+++ b/libavcodec/wmalosslessdec.c
@@ -886,7 +886,7 @@ static int decode_subframe(WmallDecodeCtx *s)
 
         s->do_arith_coding    = get_bits1(&s->gb);
         if (s->do_arith_coding) {
-            av_log_missing_feature(s->avctx, "Arithmetic coding", 1);
+            avpriv_request_sample(s->avctx, "Arithmetic coding");
             return AVERROR_PATCHWELCOME;
         }
         s->do_ac_filter       = get_bits1(&s->gb);
@@ -1191,7 +1191,7 @@ static int decode_packet(AVCodecContext *avctx, void *data, int *got_frame_ptr,
         skip_bits(gb, 1);   // Skip seekable_frame_in_packet, currently ununused
         spliced_packet = get_bits1(gb);
         if (spliced_packet)
-            av_log_missing_feature(avctx, "Bitstream splicing", 1);
+            avpriv_request_sample(avctx, "Bitstream splicing");
 
         /* get number of bits that need to be added to the previous frame */
         num_bits_prev_frame = get_bits(gb, s->log2_frame_size);
diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c
index a267f5b695c1050293b85f91c642af8153f33f51..6a64641c871a5b009d366cf8f55905824bc01aa2 100644
--- a/libavcodec/wmaprodec.c
+++ b/libavcodec/wmaprodec.c
@@ -314,7 +314,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
     /** get frame len */
     bits = ff_wma_get_frame_len_bits(avctx->sample_rate, 3, s->decode_flags);
     if (bits > WMAPRO_BLOCK_MAX_BITS) {
-        av_log_missing_feature(avctx, "14-bits block sizes", 1);
+        avpriv_request_sample(avctx, "14-bit block sizes");
         return AVERROR_PATCHWELCOME;
     }
     s->samples_per_frame = 1 << bits;
diff --git a/libavcodec/wmavoice.c b/libavcodec/wmavoice.c
index f33def3b87f1476b8817a8ed6a1e73fea9669141..d03c7016399a82eb7aa17dbe562cd9de51a21383 100644
--- a/libavcodec/wmavoice.c
+++ b/libavcodec/wmavoice.c
@@ -1765,7 +1765,7 @@ static int synth_superframe(AVCodecContext *ctx, AVFrame *frame,
      * are really WMAPro-in-WMAVoice-superframes. I've never seen those in
      * the wild yet. */
     if (!get_bits1(gb)) {
-        av_log_missing_feature(ctx, "WMAPro-in-WMAVoice", 1);
+        avpriv_request_sample(ctx, "WMAPro-in-WMAVoice");
         return AVERROR_PATCHWELCOME;
     }