我正在使用 ffmpeg 3.2.7，我在将 ts 文件无损转换为 mkv 时遇到问题。源文件是使用 dumprtp 录制的转储 IPTV 流（来自 dvbstream 0.5）。
ffmpeg -i Test.ts -map 0:0 -map 0:2 -vcodec copy -acodec copy -f matroska Test.mkv
转换成功，但输出文件每隔几秒像素化一次。
当我用 MKVToolnix 转换它时，一切看起来都很好。
有没有人有解决这个问题的方法？也许有一些选项可以正确同步流？
这是一个示例输出：
# ffmpeg -i Test.ts -map 0:0 -map 0:2 -vcodec copy -acodec copy -f matroska Test.mkv
ffmpeg version 3.2.7 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 6.3.0 (OpenWrt GCC 6.3.0 r212-46f973b)
configuration: --enable-cross-compile --cross-prefix=i486-openwrt-linux-gnu- --arch=i386 --target-os=linux --prefix=/opt --pkg-config=pkg-config --enable-shared --enable-static --enable-pthreads --enable-zlib --disable-doc --disable-debug --disable-lzma --disable-vaapi --disable-vdpau --disable-outdevs --enable-avresample --enable-libopus --enable-small --enable-gpl --enable-libmp3lame --enable-libx264
libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libavresample 3. 1. 0 / 3. 1. 0
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[NULL @ 0x81f9580] SPS unavailable in decode_picture_timing
[NULL @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mp3 @ 0x81fb860] Header missing
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[mp3 @ 0x81fb860] Header missing
Last message repeated 1 times
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[mp3 @ 0x81fb860] Header missing
Last message repeated 3 times
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[mp3 @ 0x81fb860] Header missing
Last message repeated 1 times
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[mp3 @ 0x81fb860] Header missing
Last message repeated 3 times
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[mp3 @ 0x81fb860] Header missing
Last message repeated 1 times
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[mp3 @ 0x81fb860] Header missing
Last message repeated 1 times
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[mp3 @ 0x81fb860] Header missing
Last message repeated 1 times
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[mp3 @ 0x81fb860] Header missing
Last message repeated 1 times
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[mp3 @ 0x81fb860] Header missing
Last message repeated 1 times
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[mp3 @ 0x81fb860] Header missing
Last message repeated 7 times
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] SPS unavailable in decode_picture_timing
[h264 @ 0x81f9580] non-existing PPS 0 referenced
[h264 @ 0x81f9580] decode_slice_header error
[h264 @ 0x81f9580] no frame!
[mp3 @ 0x81fb860] Header missing
Last message repeated 1 times
[h264 @ 0x81f9580] reference picture missing during reorder
Last message repeated 1 times
[h264 @ 0x81f9580] Missing reference picture, default is 2147483647
Last message repeated 1 times
[h264 @ 0x81f9580] mmco: unref short failure
Last message repeated 1 times
[h264 @ 0x81f9580] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
[mp3 @ 0x81fb860] Header missing
Last message repeated 3 times
[h264 @ 0x81f9580] reference picture missing during reorder
Last message repeated 2 times
[h264 @ 0x81f9580] Missing reference picture, default is 65627
Last message repeated 2 times
[mp3 @ 0x81fb860] Header missing
Last message repeated 1 times
[h264 @ 0x81f9580] mmco: unref short failure
Last message repeated 3 times
[h264 @ 0x81f9580] Increasing reorder buffer to 2
[mp3 @ 0x81fb860] Header missing
Last message repeated 295 times
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mp3 @ 0x81fb860] Header missing
Last message repeated 13 times
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mp3 @ 0x81fb860] Header missing
Last message repeated 2 times
[mpegts @ 0x81f6280] decoding for stream 1 failed
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] PES packet size mismatch
Last message repeated 1 times
[mpegts @ 0x81f6280] Could not find codec parameters for stream 1 (Audio: mp3, 0 channels, s16p): unspecified frame size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mpegts, from 'Test.ts':
Duration: 00:01:00.54, start: 48882.340000, bitrate: 3181 kb/s
Stream #0:0[0x100]: Video: h264, yuv420p(tv, bt470bg, top first), 720x576 [SAR 16:11 DAR 20:11], 25 fps, 50 tbr, 90k tbn, 50 tbc
Stream #0:1[0x103]: Audio: mp3, 0 channels, s16p
Stream #0:2[0x102]: Audio: mp2, 48000 Hz, stereo, s16p, 192 kb/s
Stream #0:3[0x101]: Audio: ac3, 48000 Hz, stereo, fltp, 384 kb/s
Output #0, matroska, to 'Test.mkv':
Metadata:
encoder : Lavf57.56.101
Stream #0:0: Video: h264 (H264 / 0x34363248), yuv420p(tv, bt470bg, top first), 720x576 [SAR 16:11 DAR 20:11], q=2-31, 25 fps, 50 tbr, 1k tbn, 90k tbc
Stream #0:1: Audio: mp2 (P[0][0][0] / 0x0050), 48000 Hz, stereo, 192 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:2 -> #0:1 (copy)
Press [q] to stop, [?] for help
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
.
.
.
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] changing packet size to 192
[mpegts @ 0x81f6280] changing packet size to 188
[mpegts @ 0x81f6280] PES packet size mismatch
frame= 2971 fps=2674 q=-1.0 Lsize= 17441kB time=00:00:59.90 bitrate=2385.2kbits/s speed=53.9x
video:16037kB audio:1410kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
谢谢