Am 10.01.19 um 18:04 schrieb Carl Eugen Hoyos:
> 2019-01-10 14:59 GMT+01:00, Daniel Oberhoff :
>
>> I previously reported on problems with consuming a live single
>> file hls stream. It was quite embedded in the application so i
>> failed to make a good reproducible case. Now i reduced it.
> Please test current FFmpeg git head.
same behavior (i attach logs again)
> Are you missing the "-re" option?
> Iiuc, you trying to read as-fast-as-possible an input
> that is just created: How is this supposed to work,
> what behaviour do you expect?
I dont think -re is applicable. Actually it may be the consumer is
slower than the producer, which is ok. Or it may be slower for some time
and later catch up. So, yes, i want to consume as fast as possible.
Since hls is a streaming format i would actually expect this to work. It
does for multi file. The rationale is simple: the producer produces a
m3u8 plalist, appending to it new segments as they are produced. i.e.
after they have been fully written. Then the consumer sees them (by
polling the m3u8) and consumes them. This is how i would expect it to
work over http also, i.e. the consumer polls the playlist and consumes
any new segments. We simply shortcut here and do it locally via the file
system, which should be ok. Am I missing something? As I said, for
multi-file hls we dont have these problems, and i am not sure why single
file should be different. The only difference really is that instead of
whole files the data is in a byte range of a file.
Best
Daniel
ffmpeg version N-92950-gc65c4ce773 Copyright (c) 2000-2019 the FFmpeg developers
built with Apple LLVM version 10.0.0 (clang-1000.11.45.5)
configuration:
libavutil 56. 25.100 / 56. 25.100
libavcodec 58. 43.100 / 58. 43.100
libavformat58. 25.100 / 58. 25.100
libavdevice58. 6.101 / 58. 6.101
libavfilter 7. 47.100 / 7. 47.100
libswscale 5. 4.100 / 5. 4.100
libswresample 3. 4.100 / 3. 4.100
[hls,applehttp @ 0x7fb60e00] Opening 'test_single_file_mp4.m4s' for reading
Last message repeated 1 times
Input #0, hls,applehttp, from 'test_single_file_mp4.m3u8':
Duration: N/A, start: 28.00, bitrate: 51 kb/s
Program 0
Metadata:
variant_bitrate : 0
Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR
1:1 DAR 16:9], 51 kb/s, 30 fps, 30 tbr, 15360 tbn, 30720 tbc
Metadata:
variant_bitrate : 0
compatible_brands: iso6mp41
major_brand : iso5
minor_version : 512
encoder : Lavf58.25.100
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> wrapped_avframe (native))
Press [q] to stop, [?] for help
Output #0, null, to '/dev/null':
Metadata:
encoder : Lavf58.25.100
Stream #0:0: Video: wrapped_avframe, yuv420p, 1280x720 [SAR 1:1 DAR 16:9],
q=2-31, 200 kb/s, 30 fps, 30 tbn, 30 tbc
Metadata:
variant_bitrate : 0
compatible_brands: iso6mp41
major_brand : iso5
minor_version : 512
encoder : Lavc58.43.100 wrapped_avframe
[hls,applehttp @ 0x7fb60e00] Opening 'test_single_file_mp4.m4s' for reading
Last message repeated 3 times
[h264 @ 0x7fb60100d600] Invalid NAL unit 0, skipping.
frame= 156 fps= 79 q=-0.0 size=N/A time=00:00:05.20 bitrate=N/A speed=2.64x
[h264 @ 0x7fb60100dc00] Invalid NAL unit size (-503519357 > 3150).
[h264 @ 0x7fb60100dc00] Error splitting the input into NAL units.
[h264 @ 0x7fb601810800] Invalid NAL unit size (-1920240576 > 3132).
[h264 @ 0x7fb601810800] Error splitting the input into NAL units.
[h264 @ 0x7fb601002800] Invalid NAL unit size (-805746105 > 3132).
[h264 @ 0x7fb601002800] Error splitting the input into NAL units.
[h264 @ 0x7fb60100d000] Invalid NAL unit size (271284657 > 3114).
[h264 @ 0x7fb60100d000] Error splitting the input into NAL units.
[h264 @ 0x7fb60100d600] error while decoding MB 34 8, bytestream -6
[h264 @ 0x7fb60100d600] data partitioning is not implemented. Update your
FFmpeg version to the newest one from Git. If the problem still occurs, it
means that your file has a feature which has not been implemented.
[h264 @ 0x7fb60100d600] If you want to help, upload a sample of this file to
ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel mailing list.
(ffmpeg-de...@ffmpeg.org)
[h264 @ 0x7fb60100d600] concealing 2975 DC, 2975 AC, 2975 MV errors in I frame
Error while decoding stream #0:0: Invalid data found when processing input
[h264 @ 0x7fb60100d600] Invalid NAL unit size (453635919 > 3121).
[h264 @ 0x7fb60100d600] Error splitting the input into NAL units.
Error while decoding stream #0:0: Invalid data found when processing input
[h264 @ 0x7fb60100dc00] Invalid NAL unit size (-1955315659 > 3109).
[h264 @ 0x7fb60100dc00] Error splitting the input into NAL units.
Error while decoding stream #0:0: Invalid data found when processing input
[h264 @ 0x7fb601810800] Invalid NAL unit size (-653815108 > 3125).
[h264 @ 0x7fb601810800] Error splitting the
