diff --git a/libavcodec/aacenc.c b/libavcodec/aacenc.c
index 2ff6f9cc04..d66dcfd150 100644
--- a/libavcodec/aacenc.c
+++ b/libavcodec/aacenc.c
@@ -164,7 +164,7 @@ static void put_audio_specific_config(AVCodecContext *avctx)
     PutBitContext pb;
     AACEncContext *s = avctx->priv_data;
 
-    init_put_bits(&pb, avctx->extradata, avctx->extradata_size*8);
+    init_put_bits(&pb, avctx->extradata, avctx->extradata_size);
     put_bits(&pb, 5, 2); //object type - AAC-LC
     put_bits(&pb, 4, s->samplerate_index); //sample rate index
     put_bits(&pb, 4, s->channels);
diff --git a/libavcodec/adpcmenc.c b/libavcodec/adpcmenc.c
index 1b3d1bcd01..73da9272ec 100644
--- a/libavcodec/adpcmenc.c
+++ b/libavcodec/adpcmenc.c
@@ -551,7 +551,7 @@ static int adpcm_encode_frame(AVCodecContext *avctx,
     {
         int ch, i;
         PutBitContext pb;
-        init_put_bits(&pb, dst, buf_size * 8);
+        init_put_bits(&pb, dst, buf_size);
 
         for (ch = 0; ch < avctx->channels; ch++) {
             put_bits(&pb, 9, (c->status[ch].prev_sample & 0xFFFF) >> 7);
@@ -582,7 +582,7 @@ static int adpcm_encode_frame(AVCodecContext *avctx,
     {
         int i;
         PutBitContext pb;
-        init_put_bits(&pb, dst, buf_size * 8);
+        init_put_bits(&pb, dst, buf_size);
 
         n = avctx->frame_size - 1;
 
diff --git a/libavcodec/faxcompr.c b/libavcodec/faxcompr.c
index d358940690..01c8c61ae1 100644
--- a/libavcodec/faxcompr.c
+++ b/libavcodec/faxcompr.c
@@ -243,7 +243,7 @@ static void put_line(uint8_t *dst, int size, int width, const int *runs)
     PutBitContext pb;
     int run, mode = ~0, pix_left = width, run_idx = 0;
 
-    init_put_bits(&pb, dst, size*8);
+    init_put_bits(&pb, dst, size);
     while(pix_left > 0){
         run = runs[run_idx++];
         mode = ~mode;
diff --git a/libavcodec/flashsv2enc.c b/libavcodec/flashsv2enc.c
index 6466be7858..dd477d420d 100644
--- a/libavcodec/flashsv2enc.c
+++ b/libavcodec/flashsv2enc.c
@@ -270,7 +270,7 @@ static int write_header(FlashSV2Context * s, uint8_t * buf, int buf_size)
     if (buf_size < 5)
         return -1;
 
-    init_put_bits(&pb, buf, buf_size * 8);
+    init_put_bits(&pb, buf, buf_size);
 
     put_bits(&pb, 4, (s->block_width  >> 4) - 1);
     put_bits(&pb, 12, s->image_width);
diff --git a/libavcodec/flashsvenc.c b/libavcodec/flashsvenc.c
index 7e21e7d534..8ed92a6381 100644
--- a/libavcodec/flashsvenc.c
+++ b/libavcodec/flashsvenc.c
@@ -130,7 +130,7 @@ static int encode_bitstream(FlashSVContext *s, AVFrame *p, uint8_t *buf,
     int buf_pos, res;
     int pred_blocks = 0;
 
-    init_put_bits(&pb, buf, buf_size * 8);
+    init_put_bits(&pb, buf, buf_size);
 
     put_bits(&pb,  4, block_width / 16 - 1);
     put_bits(&pb, 12, s->image_width);
diff --git a/libavcodec/nellymoserenc.c b/libavcodec/nellymoserenc.c
index 725270c9fa..54820ad315 100644
--- a/libavcodec/nellymoserenc.c
+++ b/libavcodec/nellymoserenc.c
@@ -288,7 +288,7 @@ static void encode_block(NellyMoserEncodeContext *s, unsigned char *output, int
 
     apply_mdct(s);
 
-    init_put_bits(&pb, output, output_size * 8);
+    init_put_bits(&pb, output, output_size);
 
     i = 0;
     for (band = 0; band < NELLY_BANDS; band++) {
diff --git a/libavcodec/proresenc.c b/libavcodec/proresenc.c
index 09678a002f..26afe5914f 100644
--- a/libavcodec/proresenc.c
+++ b/libavcodec/proresenc.c
@@ -302,7 +302,7 @@ static int encode_slice_plane(AVCodecContext *avctx, int mb_count,
     }
 
     blocks_per_slice = mb_count << (2 - chroma);
-    init_put_bits(&pb, buf, buf_size << 3);
+    init_put_bits(&pb, buf, buf_size);
 
     encode_dc_coeffs(&pb, blocks, blocks_per_slice, qmat);
     encode_ac_coeffs(avctx, &pb, blocks, blocks_per_slice, qmat);