Hi there,

 thanks for the feedback. I made the following changes to the patch:

 - hard-code to 40ms delay. Wasn't really sure what a good value is. But given
   that the is mainly for encoding low-rate sensor data in audio streams,
   together with a video recording, 40ms should be fine in most cases.

 - fix issue when sample rate is smaller (<100, now 25).

 - use ff_log2 for calculating a power of two read size. A power of two to make
   efficient use of I/O buffers.

 - remove the superfluous check for multiple input streams. PCM decoders are
   always single-streams, right?!

 - remove cosmetic changes, and remove readsize hunk :)

 any comments?

cheers,
 -phil

 The blocksize of the PCM decoder is hard-coded. This creates
unnecessary delay when reading low-rate (<100Hz) streams. This creates
issues when multiplexing multiple streams, since other inputs are only
opened/read after a low-rate input block was completely read.

 This patch decreases the blocksize for low-rate inputs, so
approximately a block is read every 40ms. This decreases the startup
delay when multiplexing inputs with different rates.

Signed-off-by: Philipp M. Scholl <psch...@bawue.de>
---
 libavformat/pcm.c               | 14 ++++++++---
 tests/ref/seek/acodec-pcm-f32be | 54 ++++++++++++++++++++---------------------
 tests/ref/seek/acodec-pcm-f64be | 54 ++++++++++++++++++++---------------------
 tests/ref/seek/lavf-alaw        | 44 ++++++++++++++++-----------------
 tests/ref/seek/lavf-au          | 30 +++++++++++------------
 tests/ref/seek/lavf-mov         | 44 ++++++++++++++++-----------------
 tests/ref/seek/lavf-mulaw       | 44 ++++++++++++++++-----------------
 tests/ref/seek/lavf-voc         | 22 ++++++++---------
 8 files changed, 157 insertions(+), 149 deletions(-)

diff --git a/libavformat/pcm.c b/libavformat/pcm.c
index 806f91b6b1..48c3c09bb4 100644
--- a/libavformat/pcm.c
+++ b/libavformat/pcm.c
@@ -28,13 +28,21 @@
 
 int ff_pcm_read_packet(AVFormatContext *s, AVPacket *pkt)
 {
-    int ret, size;
+    int ret, size = INT_MAX;
+    AVCodecParameters *codec = s->streams[0]->codecpar;
+
+    /*
+     * Compute read size to complete a read every 40ms.  Clamp to RAW_SAMPLES 
if
+     * larger. Use power of two as readsize for I/O efficiency.
+     */
+    size = (codec->sample_rate/25 | 1) * codec->block_align;
+    size = FFMIN(size, RAW_SAMPLES * codec->block_align);
+    size = 1 << ff_log2(size);
 
-    size= RAW_SAMPLES*s->streams[0]->codecpar->block_align;
     if (size <= 0)
         return AVERROR(EINVAL);
 
-    ret= av_get_packet(s->pb, pkt, size);
+    ret = av_get_packet(s->pb, pkt, size);
 
     pkt->flags &= ~AV_PKT_FLAG_CORRUPT;
     pkt->stream_index = 0;
diff --git a/tests/ref/seek/acodec-pcm-f32be b/tests/ref/seek/acodec-pcm-f32be
index b838262b58..89c8e9d7a9 100644
--- a/tests/ref/seek/acodec-pcm-f32be
+++ b/tests/ref/seek/acodec-pcm-f32be
@@ -1,53 +1,53 @@
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
8192
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
2048
 ret: 0         st:-1 flags:0  ts:-1.000000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
8192
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
2048
 ret: 0         st:-1 flags:1  ts: 1.894167
-ret: 0         st: 0 flags:1 dts: 1.894172 pts: 1.894172 pos: 668296 size:  
8192
+ret: 0         st: 0 flags:1 dts: 1.894172 pts: 1.894172 pos: 668296 size:  
2048
 ret: 0         st: 0 flags:0  ts: 0.788345
-ret: 0         st: 0 flags:1 dts: 0.788345 pts: 0.788345 pos: 278160 size:  
8192
+ret: 0         st: 0 flags:1 dts: 0.788345 pts: 0.788345 pos: 278160 size:  
2048
 ret: 0         st: 0 flags:1  ts:-0.317506
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
8192
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
2048
 ret: 0         st:-1 flags:0  ts: 2.576668
-ret: 0         st: 0 flags:1 dts: 2.576667 pts: 2.576667 pos: 909080 size:  
8192
+ret: 0         st: 0 flags:1 dts: 2.576667 pts: 2.576667 pos: 909080 size:  
2048
 ret: 0         st:-1 flags:1  ts: 1.470835
-ret: 0         st: 0 flags:1 dts: 1.470839 pts: 1.470839 pos: 518944 size:  
8192
+ret: 0         st: 0 flags:1 dts: 1.470839 pts: 1.470839 pos: 518944 size:  
2048
 ret: 0         st: 0 flags:0  ts: 0.365011
-ret: 0         st: 0 flags:1 dts: 0.365011 pts: 0.365011 pos: 128808 size:  
8192
+ret: 0         st: 0 flags:1 dts: 0.365011 pts: 0.365011 pos: 128808 size:  
2048
 ret: 0         st: 0 flags:1  ts:-0.740839
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
8192
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
2048
 ret: 0         st:-1 flags:0  ts: 2.153336
-ret: 0         st: 0 flags:1 dts: 2.153333 pts: 2.153333 pos: 759728 size:  
8192
+ret: 0         st: 0 flags:1 dts: 2.153333 pts: 2.153333 pos: 759728 size:  
2048
 ret: 0         st:-1 flags:1  ts: 1.047503
-ret: 0         st: 0 flags:1 dts: 1.047506 pts: 1.047506 pos: 369592 size:  
8192
+ret: 0         st: 0 flags:1 dts: 1.047506 pts: 1.047506 pos: 369592 size:  
2048
 ret: 0         st: 0 flags:0  ts:-0.058322
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
8192
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
2048
 ret: 0         st: 0 flags:1  ts: 2.835828
-ret: 0         st: 0 flags:1 dts: 2.835828 pts: 2.835828 pos:1000512 size:  
8192
+ret: 0         st: 0 flags:1 dts: 2.835828 pts: 2.835828 pos:1000512 size:  
2048
 ret: 0         st:-1 flags:0  ts: 1.730004
-ret: 0         st: 0 flags:1 dts: 1.730000 pts: 1.730000 pos: 610376 size:  
8192
+ret: 0         st: 0 flags:1 dts: 1.730000 pts: 1.730000 pos: 610376 size:  
2048
 ret: 0         st:-1 flags:1  ts: 0.624171
-ret: 0         st: 0 flags:1 dts: 0.624172 pts: 0.624172 pos: 220240 size:  
8192
+ret: 0         st: 0 flags:1 dts: 0.624172 pts: 0.624172 pos: 220240 size:  
2048
 ret: 0         st: 0 flags:0  ts:-0.481655
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
8192
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
2048
 ret: 0         st: 0 flags:1  ts: 2.412494
-ret: 0         st: 0 flags:1 dts: 2.412494 pts: 2.412494 pos: 851160 size:  
8192
+ret: 0         st: 0 flags:1 dts: 2.412494 pts: 2.412494 pos: 851160 size:  
2048
 ret: 0         st:-1 flags:0  ts: 1.306672
-ret: 0         st: 0 flags:1 dts: 1.306667 pts: 1.306667 pos: 461024 size:  
8192
+ret: 0         st: 0 flags:1 dts: 1.306667 pts: 1.306667 pos: 461024 size:  
2048
 ret: 0         st:-1 flags:1  ts: 0.200839
-ret: 0         st: 0 flags:1 dts: 0.200839 pts: 0.200839 pos:  70888 size:  
8192
+ret: 0         st: 0 flags:1 dts: 0.200839 pts: 0.200839 pos:  70888 size:  
2048
 ret: 0         st: 0 flags:0  ts:-0.904989
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
8192
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
2048
 ret: 0         st: 0 flags:1  ts: 1.989184
-ret: 0         st: 0 flags:1 dts: 1.989184 pts: 1.989184 pos: 701816 size:  
8192
+ret: 0         st: 0 flags:1 dts: 1.989184 pts: 1.989184 pos: 701816 size:  
2048
 ret: 0         st:-1 flags:0  ts: 0.883340
-ret: 0         st: 0 flags:1 dts: 0.883333 pts: 0.883333 pos: 311672 size:  
8192
+ret: 0         st: 0 flags:1 dts: 0.883333 pts: 0.883333 pos: 311672 size:  
2048
 ret: 0         st:-1 flags:1  ts:-0.222493
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
8192
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
2048
 ret: 0         st: 0 flags:0  ts: 2.671678
-ret: 0         st: 0 flags:1 dts: 2.671678 pts: 2.671678 pos: 942600 size:  
8192
+ret: 0         st: 0 flags:1 dts: 2.671678 pts: 2.671678 pos: 942600 size:  
2048
 ret: 0         st: 0 flags:1  ts: 1.565850
-ret: 0         st: 0 flags:1 dts: 1.565850 pts: 1.565850 pos: 552464 size:  
8192
+ret: 0         st: 0 flags:1 dts: 1.565850 pts: 1.565850 pos: 552464 size:  
2048
 ret: 0         st:-1 flags:0  ts: 0.460008
-ret: 0         st: 0 flags:1 dts: 0.460000 pts: 0.460000 pos: 162320 size:  
8192
+ret: 0         st: 0 flags:1 dts: 0.460000 pts: 0.460000 pos: 162320 size:  
2048
 ret: 0         st:-1 flags:1  ts:-0.645825
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
8192
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
2048
diff --git a/tests/ref/seek/acodec-pcm-f64be b/tests/ref/seek/acodec-pcm-f64be
index 82223517d5..8b050e9914 100644
--- a/tests/ref/seek/acodec-pcm-f64be
+++ b/tests/ref/seek/acodec-pcm-f64be
@@ -1,53 +1,53 @@
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size: 
16384
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
4096
 ret: 0         st:-1 flags:0  ts:-1.000000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size: 
16384
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
4096
 ret: 0         st:-1 flags:1  ts: 1.894167
-ret: 0         st: 0 flags:1 dts: 1.894172 pts: 1.894172 pos:1336560 size: 
16384
+ret: 0         st: 0 flags:1 dts: 1.894172 pts: 1.894172 pos:1336560 size:  
4096
 ret: 0         st: 0 flags:0  ts: 0.788345
-ret: 0         st: 0 flags:1 dts: 0.788345 pts: 0.788345 pos: 556288 size: 
16384
+ret: 0         st: 0 flags:1 dts: 0.788345 pts: 0.788345 pos: 556288 size:  
4096
 ret: 0         st: 0 flags:1  ts:-0.317506
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size: 
16384
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
4096
 ret: 0         st:-1 flags:0  ts: 2.576668
-ret: 0         st: 0 flags:1 dts: 2.576667 pts: 2.576667 pos:1818128 size: 
16384
+ret: 0         st: 0 flags:1 dts: 2.576667 pts: 2.576667 pos:1818128 size:  
4096
 ret: 0         st:-1 flags:1  ts: 1.470835
-ret: 0         st: 0 flags:1 dts: 1.470839 pts: 1.470839 pos:1037856 size: 
16384
+ret: 0         st: 0 flags:1 dts: 1.470839 pts: 1.470839 pos:1037856 size:  
4096
 ret: 0         st: 0 flags:0  ts: 0.365011
-ret: 0         st: 0 flags:1 dts: 0.365011 pts: 0.365011 pos: 257584 size: 
16384
+ret: 0         st: 0 flags:1 dts: 0.365011 pts: 0.365011 pos: 257584 size:  
4096
 ret: 0         st: 0 flags:1  ts:-0.740839
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size: 
16384
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
4096
 ret: 0         st:-1 flags:0  ts: 2.153336
-ret: 0         st: 0 flags:1 dts: 2.153333 pts: 2.153333 pos:1519424 size: 
16384
+ret: 0         st: 0 flags:1 dts: 2.153333 pts: 2.153333 pos:1519424 size:  
4096
 ret: 0         st:-1 flags:1  ts: 1.047503
-ret: 0         st: 0 flags:1 dts: 1.047506 pts: 1.047506 pos: 739152 size: 
16384
+ret: 0         st: 0 flags:1 dts: 1.047506 pts: 1.047506 pos: 739152 size:  
4096
 ret: 0         st: 0 flags:0  ts:-0.058322
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size: 
16384
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
4096
 ret: 0         st: 0 flags:1  ts: 2.835828
-ret: 0         st: 0 flags:1 dts: 2.835828 pts: 2.835828 pos:2000992 size: 
16384
+ret: 0         st: 0 flags:1 dts: 2.835828 pts: 2.835828 pos:2000992 size:  
4096
 ret: 0         st:-1 flags:0  ts: 1.730004
-ret: 0         st: 0 flags:1 dts: 1.730000 pts: 1.730000 pos:1220720 size: 
16384
+ret: 0         st: 0 flags:1 dts: 1.730000 pts: 1.730000 pos:1220720 size:  
4096
 ret: 0         st:-1 flags:1  ts: 0.624171
-ret: 0         st: 0 flags:1 dts: 0.624172 pts: 0.624172 pos: 440448 size: 
16384
+ret: 0         st: 0 flags:1 dts: 0.624172 pts: 0.624172 pos: 440448 size:  
4096
 ret: 0         st: 0 flags:0  ts:-0.481655
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size: 
16384
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
4096
 ret: 0         st: 0 flags:1  ts: 2.412494
-ret: 0         st: 0 flags:1 dts: 2.412494 pts: 2.412494 pos:1702288 size: 
16384
+ret: 0         st: 0 flags:1 dts: 2.412494 pts: 2.412494 pos:1702288 size:  
4096
 ret: 0         st:-1 flags:0  ts: 1.306672
-ret: 0         st: 0 flags:1 dts: 1.306667 pts: 1.306667 pos: 922016 size: 
16384
+ret: 0         st: 0 flags:1 dts: 1.306667 pts: 1.306667 pos: 922016 size:  
4096
 ret: 0         st:-1 flags:1  ts: 0.200839
-ret: 0         st: 0 flags:1 dts: 0.200839 pts: 0.200839 pos: 141744 size: 
16384
+ret: 0         st: 0 flags:1 dts: 0.200839 pts: 0.200839 pos: 141744 size:  
4096
 ret: 0         st: 0 flags:0  ts:-0.904989
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size: 
16384
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
4096
 ret: 0         st: 0 flags:1  ts: 1.989184
-ret: 0         st: 0 flags:1 dts: 1.989184 pts: 1.989184 pos:1403600 size: 
16384
+ret: 0         st: 0 flags:1 dts: 1.989184 pts: 1.989184 pos:1403600 size:  
4096
 ret: 0         st:-1 flags:0  ts: 0.883340
-ret: 0         st: 0 flags:1 dts: 0.883333 pts: 0.883333 pos: 623312 size: 
16384
+ret: 0         st: 0 flags:1 dts: 0.883333 pts: 0.883333 pos: 623312 size:  
4096
 ret: 0         st:-1 flags:1  ts:-0.222493
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size: 
16384
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
4096
 ret: 0         st: 0 flags:0  ts: 2.671678
-ret: 0         st: 0 flags:1 dts: 2.671678 pts: 2.671678 pos:1885168 size: 
16384
+ret: 0         st: 0 flags:1 dts: 2.671678 pts: 2.671678 pos:1885168 size:  
4096
 ret: 0         st: 0 flags:1  ts: 1.565850
-ret: 0         st: 0 flags:1 dts: 1.565850 pts: 1.565850 pos:1104896 size: 
16384
+ret: 0         st: 0 flags:1 dts: 1.565850 pts: 1.565850 pos:1104896 size:  
4096
 ret: 0         st:-1 flags:0  ts: 0.460008
-ret: 0         st: 0 flags:1 dts: 0.460000 pts: 0.460000 pos: 324608 size: 
16384
+ret: 0         st: 0 flags:1 dts: 0.460000 pts: 0.460000 pos: 324608 size:  
4096
 ret: 0         st:-1 flags:1  ts:-0.645825
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size: 
16384
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
4096
diff --git a/tests/ref/seek/lavf-alaw b/tests/ref/seek/lavf-alaw
index 4b1f8fbc02..e46de928a2 100644
--- a/tests/ref/seek/lavf-alaw
+++ b/tests/ref/seek/lavf-alaw
@@ -1,53 +1,53 @@
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st:-1 flags:0  ts:-1.000000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st:-1 flags:1  ts: 1.894167
-ret: 0         st: 0 flags:1 dts: 1.894150 pts: 1.894150 pos:  41766 size:  
1024
+ret: 0         st: 0 flags:1 dts: 1.894150 pts: 1.894150 pos:  41766 size:   
128
 ret: 0         st: 0 flags:0  ts: 0.788345
-ret: 0         st: 0 flags:1 dts: 0.788345 pts: 0.788345 pos:  17383 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.788345 pts: 0.788345 pos:  17383 size:   
128
 ret: 0         st: 0 flags:1  ts:-0.317506
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st:-1 flags:0  ts: 2.576668
 ret:-EOF
 ret: 0         st:-1 flags:1  ts: 1.470835
-ret: 0         st: 0 flags:1 dts: 1.470839 pts: 1.470839 pos:  32432 size:  
1024
+ret: 0         st: 0 flags:1 dts: 1.470839 pts: 1.470839 pos:  32432 size:   
128
 ret: 0         st: 0 flags:0  ts: 0.364989
-ret: 0         st: 0 flags:1 dts: 0.364989 pts: 0.364989 pos:   8048 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.364989 pts: 0.364989 pos:   8048 size:   
128
 ret: 0         st: 0 flags:1  ts:-0.740816
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st:-1 flags:0  ts: 2.153336
 ret:-EOF
 ret: 0         st:-1 flags:1  ts: 1.047503
-ret: 0         st: 0 flags:1 dts: 1.047483 pts: 1.047483 pos:  23097 size:  
1024
+ret: 0         st: 0 flags:1 dts: 1.047483 pts: 1.047483 pos:  23097 size:   
128
 ret: 0         st: 0 flags:0  ts:-0.058322
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st: 0 flags:1  ts: 2.835828
 ret:-EOF
 ret: 0         st:-1 flags:0  ts: 1.730004
-ret: 0         st: 0 flags:1 dts: 1.730023 pts: 1.730023 pos:  38147 size:  
1024
+ret: 0         st: 0 flags:1 dts: 1.730023 pts: 1.730023 pos:  38147 size:   
128
 ret: 0         st:-1 flags:1  ts: 0.624171
-ret: 0         st: 0 flags:1 dts: 0.624172 pts: 0.624172 pos:  13763 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.624172 pts: 0.624172 pos:  13763 size:   
128
 ret: 0         st: 0 flags:0  ts:-0.481678
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st: 0 flags:1  ts: 2.412517
 ret:-EOF
 ret: 0         st:-1 flags:0  ts: 1.306672
-ret: 0         st: 0 flags:1 dts: 1.306667 pts: 1.306667 pos:  28812 size:  
1024
+ret: 0         st: 0 flags:1 dts: 1.306667 pts: 1.306667 pos:  28812 size:   
128
 ret: 0         st:-1 flags:1  ts: 0.200839
-ret: 0         st: 0 flags:1 dts: 0.200816 pts: 0.200816 pos:   4428 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.200816 pts: 0.200816 pos:   4428 size:   
128
 ret: 0         st: 0 flags:0  ts:-0.904989
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st: 0 flags:1  ts: 1.989161
-ret: 0         st: 0 flags:1 dts: 1.989161 pts: 1.989161 pos:  43861 size:   
239
+ret: 0         st: 0 flags:1 dts: 1.989161 pts: 1.989161 pos:  43861 size:   
128
 ret: 0         st:-1 flags:0  ts: 0.883340
-ret: 0         st: 0 flags:1 dts: 0.883356 pts: 0.883356 pos:  19478 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.883356 pts: 0.883356 pos:  19478 size:   
128
 ret: 0         st:-1 flags:1  ts:-0.222493
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st: 0 flags:0  ts: 2.671655
 ret:-EOF
 ret: 0         st: 0 flags:1  ts: 1.565850
-ret: 0         st: 0 flags:1 dts: 1.565850 pts: 1.565850 pos:  34527 size:  
1024
+ret: 0         st: 0 flags:1 dts: 1.565850 pts: 1.565850 pos:  34527 size:   
128
 ret: 0         st:-1 flags:0  ts: 0.460008
-ret: 0         st: 0 flags:1 dts: 0.460000 pts: 0.460000 pos:  10143 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.460000 pts: 0.460000 pos:  10143 size:   
128
 ret: 0         st:-1 flags:1  ts:-0.645825
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
diff --git a/tests/ref/seek/lavf-au b/tests/ref/seek/lavf-au
index 8edce58f65..6ac6192738 100644
--- a/tests/ref/seek/lavf-au
+++ b/tests/ref/seek/lavf-au
@@ -1,53 +1,53 @@
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:  
2048
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:   
512
 ret: 0         st:-1 flags:0  ts:-1.000000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:  
2048
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:   
512
 ret: 0         st:-1 flags:1  ts: 1.894167
 ret:-EOF
 ret: 0         st: 0 flags:0  ts: 0.788345
-ret: 0         st: 0 flags:1 dts: 0.788345 pts: 0.788345 pos:  69572 size:  
2048
+ret: 0         st: 0 flags:1 dts: 0.788345 pts: 0.788345 pos:  69572 size:   
512
 ret: 0         st: 0 flags:1  ts:-0.317506
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:  
2048
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:   
512
 ret: 0         st:-1 flags:0  ts: 2.576668
 ret:-EOF
 ret: 0         st:-1 flags:1  ts: 1.470835
 ret:-EOF
 ret: 0         st: 0 flags:0  ts: 0.365011
-ret: 0         st: 0 flags:1 dts: 0.365011 pts: 0.365011 pos:  32234 size:  
2048
+ret: 0         st: 0 flags:1 dts: 0.365011 pts: 0.365011 pos:  32234 size:   
512
 ret: 0         st: 0 flags:1  ts:-0.740839
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:  
2048
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:   
512
 ret: 0         st:-1 flags:0  ts: 2.153336
 ret:-EOF
 ret: 0         st:-1 flags:1  ts: 1.047503
 ret:-EOF
 ret: 0         st: 0 flags:0  ts:-0.058322
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:  
2048
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:   
512
 ret: 0         st: 0 flags:1  ts: 2.835828
 ret:-EOF
 ret: 0         st:-1 flags:0  ts: 1.730004
 ret:-EOF
 ret: 0         st:-1 flags:1  ts: 0.624171
-ret: 0         st: 0 flags:1 dts: 0.624172 pts: 0.624172 pos:  55092 size:  
2048
+ret: 0         st: 0 flags:1 dts: 0.624172 pts: 0.624172 pos:  55092 size:   
512
 ret: 0         st: 0 flags:0  ts:-0.481655
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:  
2048
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:   
512
 ret: 0         st: 0 flags:1  ts: 2.412494
 ret:-EOF
 ret: 0         st:-1 flags:0  ts: 1.306672
 ret:-EOF
 ret: 0         st:-1 flags:1  ts: 0.200839
-ret: 0         st: 0 flags:1 dts: 0.200839 pts: 0.200839 pos:  17754 size:  
2048
+ret: 0         st: 0 flags:1 dts: 0.200839 pts: 0.200839 pos:  17754 size:   
512
 ret: 0         st: 0 flags:0  ts:-0.904989
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:  
2048
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:   
512
 ret: 0         st: 0 flags:1  ts: 1.989184
 ret:-EOF
 ret: 0         st:-1 flags:0  ts: 0.883340
-ret: 0         st: 0 flags:1 dts: 0.883333 pts: 0.883333 pos:  77950 size:  
2048
+ret: 0         st: 0 flags:1 dts: 0.883333 pts: 0.883333 pos:  77950 size:   
512
 ret: 0         st:-1 flags:1  ts:-0.222493
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:  
2048
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:   
512
 ret: 0         st: 0 flags:0  ts: 2.671678
 ret:-EOF
 ret: 0         st: 0 flags:1  ts: 1.565850
 ret:-EOF
 ret: 0         st:-1 flags:0  ts: 0.460008
-ret: 0         st: 0 flags:1 dts: 0.460000 pts: 0.460000 pos:  40612 size:  
2048
+ret: 0         st: 0 flags:1 dts: 0.460000 pts: 0.460000 pos:  40612 size:   
512
 ret: 0         st:-1 flags:1  ts:-0.645825
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:  
2048
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     40 size:   
512
diff --git a/tests/ref/seek/lavf-mov b/tests/ref/seek/lavf-mov
index 27ea7c7730..88fba97cf3 100644
--- a/tests/ref/seek/lavf-mov
+++ b/tests/ref/seek/lavf-mov
@@ -1,48 +1,48 @@
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1767 size: 
27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1671 size: 
27837
 ret: 0         st:-1 flags:0  ts:-1.000000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1767 size: 
27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1671 size: 
27837
 ret: 0         st:-1 flags:1  ts: 1.894167
-ret: 0         st: 1 flags:1 dts: 0.952018 pts: 0.952018 pos: 326971 size:  
1024
+ret: 0         st: 1 flags:1 dts: 0.946213 pts: 0.946213 pos: 326619 size:   
768
 ret: 0         st: 0 flags:0  ts: 0.788359
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 327995 size: 
27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 327387 size: 
27834
 ret: 0         st: 0 flags:1  ts:-0.317500
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1767 size: 
27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1671 size: 
27837
 ret:-1         st: 1 flags:0  ts: 2.576667
 ret: 0         st: 1 flags:1  ts: 1.470839
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 327995 size: 
27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 327387 size: 
27834
 ret: 0         st:-1 flags:0  ts: 0.365002
-ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 165249 size: 
27925
+ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 164897 size: 
27925
 ret: 0         st:-1 flags:1  ts:-0.740831
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1767 size: 
27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1671 size: 
27837
 ret:-1         st: 0 flags:0  ts: 2.153359
 ret: 0         st: 0 flags:1  ts: 1.047500
-ret: 0         st: 1 flags:1 dts: 0.952018 pts: 0.952018 pos: 326971 size:  
1024
+ret: 0         st: 1 flags:1 dts: 0.946213 pts: 0.946213 pos: 326619 size:   
768
 ret: 0         st: 1 flags:0  ts:-0.058322
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1767 size: 
27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1671 size: 
27837
 ret: 0         st: 1 flags:1  ts: 2.835828
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 327995 size: 
27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 327387 size: 
27834
 ret:-1         st:-1 flags:0  ts: 1.730004
 ret: 0         st:-1 flags:1  ts: 0.624171
-ret: 0         st: 1 flags:1 dts: 0.464399 pts: 0.464399 pos: 164225 size:  
1024
+ret: 0         st: 1 flags:1 dts: 0.464399 pts: 0.464399 pos: 164129 size:   
768
 ret: 0         st: 0 flags:0  ts:-0.481641
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1767 size: 
27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1671 size: 
27837
 ret: 0         st: 0 flags:1  ts: 2.412500
-ret: 0         st: 1 flags:1 dts: 0.952018 pts: 0.952018 pos: 326971 size:  
1024
+ret: 0         st: 1 flags:1 dts: 0.946213 pts: 0.946213 pos: 326619 size:   
768
 ret:-1         st: 1 flags:0  ts: 1.306667
 ret: 0         st: 1 flags:1  ts: 0.200839
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1767 size: 
27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1671 size: 
27837
 ret: 0         st:-1 flags:0  ts:-0.904994
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1767 size: 
27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1671 size: 
27837
 ret: 0         st:-1 flags:1  ts: 1.989173
-ret: 0         st: 1 flags:1 dts: 0.952018 pts: 0.952018 pos: 326971 size:  
1024
+ret: 0         st: 1 flags:1 dts: 0.946213 pts: 0.946213 pos: 326619 size:   
768
 ret: 0         st: 0 flags:0  ts: 0.883359
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 327995 size: 
27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 327387 size: 
27834
 ret: 0         st: 0 flags:1  ts:-0.222500
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1767 size: 
27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1671 size: 
27837
 ret:-1         st: 1 flags:0  ts: 2.671678
 ret: 0         st: 1 flags:1  ts: 1.565850
-ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 327995 size: 
27834
+ret: 0         st: 0 flags:1 dts: 0.960000 pts: 0.960000 pos: 327387 size: 
27834
 ret: 0         st:-1 flags:0  ts: 0.460008
-ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 165249 size: 
27925
+ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos: 164897 size: 
27925
 ret: 0         st:-1 flags:1  ts:-0.645825
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1767 size: 
27837
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:   1671 size: 
27837
diff --git a/tests/ref/seek/lavf-mulaw b/tests/ref/seek/lavf-mulaw
index 4b1f8fbc02..e46de928a2 100644
--- a/tests/ref/seek/lavf-mulaw
+++ b/tests/ref/seek/lavf-mulaw
@@ -1,53 +1,53 @@
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st:-1 flags:0  ts:-1.000000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st:-1 flags:1  ts: 1.894167
-ret: 0         st: 0 flags:1 dts: 1.894150 pts: 1.894150 pos:  41766 size:  
1024
+ret: 0         st: 0 flags:1 dts: 1.894150 pts: 1.894150 pos:  41766 size:   
128
 ret: 0         st: 0 flags:0  ts: 0.788345
-ret: 0         st: 0 flags:1 dts: 0.788345 pts: 0.788345 pos:  17383 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.788345 pts: 0.788345 pos:  17383 size:   
128
 ret: 0         st: 0 flags:1  ts:-0.317506
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st:-1 flags:0  ts: 2.576668
 ret:-EOF
 ret: 0         st:-1 flags:1  ts: 1.470835
-ret: 0         st: 0 flags:1 dts: 1.470839 pts: 1.470839 pos:  32432 size:  
1024
+ret: 0         st: 0 flags:1 dts: 1.470839 pts: 1.470839 pos:  32432 size:   
128
 ret: 0         st: 0 flags:0  ts: 0.364989
-ret: 0         st: 0 flags:1 dts: 0.364989 pts: 0.364989 pos:   8048 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.364989 pts: 0.364989 pos:   8048 size:   
128
 ret: 0         st: 0 flags:1  ts:-0.740816
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st:-1 flags:0  ts: 2.153336
 ret:-EOF
 ret: 0         st:-1 flags:1  ts: 1.047503
-ret: 0         st: 0 flags:1 dts: 1.047483 pts: 1.047483 pos:  23097 size:  
1024
+ret: 0         st: 0 flags:1 dts: 1.047483 pts: 1.047483 pos:  23097 size:   
128
 ret: 0         st: 0 flags:0  ts:-0.058322
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st: 0 flags:1  ts: 2.835828
 ret:-EOF
 ret: 0         st:-1 flags:0  ts: 1.730004
-ret: 0         st: 0 flags:1 dts: 1.730023 pts: 1.730023 pos:  38147 size:  
1024
+ret: 0         st: 0 flags:1 dts: 1.730023 pts: 1.730023 pos:  38147 size:   
128
 ret: 0         st:-1 flags:1  ts: 0.624171
-ret: 0         st: 0 flags:1 dts: 0.624172 pts: 0.624172 pos:  13763 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.624172 pts: 0.624172 pos:  13763 size:   
128
 ret: 0         st: 0 flags:0  ts:-0.481678
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st: 0 flags:1  ts: 2.412517
 ret:-EOF
 ret: 0         st:-1 flags:0  ts: 1.306672
-ret: 0         st: 0 flags:1 dts: 1.306667 pts: 1.306667 pos:  28812 size:  
1024
+ret: 0         st: 0 flags:1 dts: 1.306667 pts: 1.306667 pos:  28812 size:   
128
 ret: 0         st:-1 flags:1  ts: 0.200839
-ret: 0         st: 0 flags:1 dts: 0.200816 pts: 0.200816 pos:   4428 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.200816 pts: 0.200816 pos:   4428 size:   
128
 ret: 0         st: 0 flags:0  ts:-0.904989
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st: 0 flags:1  ts: 1.989161
-ret: 0         st: 0 flags:1 dts: 1.989161 pts: 1.989161 pos:  43861 size:   
239
+ret: 0         st: 0 flags:1 dts: 1.989161 pts: 1.989161 pos:  43861 size:   
128
 ret: 0         st:-1 flags:0  ts: 0.883340
-ret: 0         st: 0 flags:1 dts: 0.883356 pts: 0.883356 pos:  19478 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.883356 pts: 0.883356 pos:  19478 size:   
128
 ret: 0         st:-1 flags:1  ts:-0.222493
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
 ret: 0         st: 0 flags:0  ts: 2.671655
 ret:-EOF
 ret: 0         st: 0 flags:1  ts: 1.565850
-ret: 0         st: 0 flags:1 dts: 1.565850 pts: 1.565850 pos:  34527 size:  
1024
+ret: 0         st: 0 flags:1 dts: 1.565850 pts: 1.565850 pos:  34527 size:   
128
 ret: 0         st:-1 flags:0  ts: 0.460008
-ret: 0         st: 0 flags:1 dts: 0.460000 pts: 0.460000 pos:  10143 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.460000 pts: 0.460000 pos:  10143 size:   
128
 ret: 0         st:-1 flags:1  ts:-0.645825
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:   
128
diff --git a/tests/ref/seek/lavf-voc b/tests/ref/seek/lavf-voc
index 014c251129..47d683230a 100644
--- a/tests/ref/seek/lavf-voc
+++ b/tests/ref/seek/lavf-voc
@@ -1,44 +1,44 @@
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:   
256
 ret: 0         st:-1 flags:0  ts:-1.000000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:   
256
 ret: 0         st:-1 flags:1  ts: 1.894167
 ret:-EOF
 ret: 0         st: 0 flags:0  ts: 0.788330
-ret: 0         st: 0 flags:1 dts: 0.800773 pts: 0.800773 pos:  34984 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.788997 pts: 0.788997 pos:  34872 size:   
256
 ret:-1         st: 0 flags:1  ts:-0.317494
 ret:-1         st:-1 flags:0  ts: 2.576668
 ret: 0         st:-1 flags:1  ts: 1.470835
 ret:-EOF
 ret: 0         st: 0 flags:0  ts: 0.365012
-ret: 0         st: 0 flags:1 dts: 0.376834 pts: 0.376834 pos:  16480 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.365058 pts: 0.365058 pos:  16152 size:   
256
 ret:-1         st: 0 flags:1  ts:-0.740834
 ret:-1         st:-1 flags:0  ts: 2.153336
 ret: 0         st:-1 flags:1  ts: 1.047503
 ret:-EOF
 ret: 0         st: 0 flags:0  ts:-0.058328
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:   
256
 ret: 0         st: 0 flags:1  ts: 2.835848
 ret:-EOF
 ret:-1         st:-1 flags:0  ts: 1.730004
 ret: 0         st:-1 flags:1  ts: 0.624171
-ret: 0         st: 0 flags:1 dts: 0.612356 pts: 0.612356 pos:  26760 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.624132 pts: 0.624132 pos:  27592 size:   
256
 ret: 0         st: 0 flags:0  ts:-0.481669
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:   
256
 ret: 0         st: 0 flags:1  ts: 2.412507
 ret:-EOF
 ret:-1         st:-1 flags:0  ts: 1.306672
 ret: 0         st:-1 flags:1  ts: 0.200839
-ret: 0         st: 0 flags:1 dts: 0.188417 pts: 0.188417 pos:   8256 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.200193 pts: 0.200193 pos:   8872 size:   
256
 ret: 0         st: 0 flags:0  ts:-0.904986
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     32 size:   
256
 ret: 0         st: 0 flags:1  ts: 1.989167
 ret:-EOF
 ret: 0         st:-1 flags:0  ts: 0.883340
-ret: 0         st: 0 flags:1 dts: 0.894981 pts: 0.894981 pos:  39096 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.889093 pts: 0.889093 pos:  39292 size:   
256
 ret:-1         st:-1 flags:1  ts:-0.222493
 ret:-1         st: 0 flags:0  ts: 2.671673
 ret: 0         st: 0 flags:1  ts: 1.565849
 ret:-EOF
 ret: 0         st:-1 flags:0  ts: 0.460008
-ret: 0         st: 0 flags:1 dts: 0.471043 pts: 0.471043 pos:  20592 size:  
1024
+ret: 0         st: 0 flags:1 dts: 0.465155 pts: 0.465155 pos:  20572 size:   
256
 ret:-1         st:-1 flags:1  ts:-0.645825
-- 
2.16.1

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