Opened 2 years ago
Last modified 2 years ago
#10054 new defect
ffmpeg/ffplay miscalculates $Time$, resulting in time from the future and 404 errors
| Reported by: | TheRadziu | Owned by: | |
|---|---|---|---|
| Priority: | normal | Component: | avformat |
| Version: | git-master | Keywords: | dash |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | no | |
| Analyzed by developer: | no |
Description (last modified by )
ffplay seems to grab wrong time, resulting in 404ing the segment fragments
ffplay -cenc_decryption_key "<cut, not relevant to the issue>" -i "https://live001.cda.pl/enc111/kapitanbomba/kapitanbomba.mpd" -loglevel debug ffplay version 2022-11-03-git-5ccd4d3060-essentials_build-www.gyan.dev Copyright (c) 2003-2022 the FFmpeg developers built with gcc 12.1.0 (Rev2, Built by MSYS2 project) configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband libavutil 57. 40.100 / 57. 40.100 libavcodec 59. 51.101 / 59. 51.101 libavformat 59. 34.101 / 59. 34.101 libavdevice 59. 8.101 / 59. 8.101 libavfilter 8. 49.101 / 8. 49.101 libswscale 6. 8.112 / 6. 8.112 libswresample 4. 9.100 / 4. 9.100 libpostproc 56. 7.100 / 56. 7.100 Initialized direct3d renderer. [NULL @ 000001885b2ef1c0] Opening 'https://live001.cda.pl/enc111/kapitanbomba/kapitanbomba.mpd' for reading [https @ 000001885b2eca00] Setting default whitelist 'http,https,tls,rtp,tcp,udp,crypto,httpproxy' [tcp @ 000001885b2efac0] Original list of addresses: [tcp @ 000001885b2efac0] Address 46.102.100.197 port 443 [tcp @ 000001885b2efac0] Interleaved list of addresses: [tcp @ 000001885b2efac0] Address 46.102.100.197 port 443 [tcp @ 000001885b2efac0] Starting connection attempt to 46.102.100.197 port 443 [tcp @ 000001885b2efac0] Successfully connected to 46.102.100.197 port 443 [https @ 000001885b2eca00] request: GET /enc111/kapitanbomba/kapitanbomba.mpd HTTP/1.1 User-Agent: Lavf/59.34.101 Accept: */* Range: bytes=0- Connection: close Host: live001.cda.pl Icy-MetaData: 1 [dash @ 000001885b2ef1c0] Format dash probed with size=2048 and score=100 [https @ 000001885b2eb640] Setting default whitelist 'http,https,tls,rtp,tcp,udp,crypto,httpproxy' [tcp @ 0000018861faee80] Original list of addresses: [tcp @ 0000018861faee80] Address 46.102.100.197 port 443 [tcp @ 0000018861faee80] Interleaved list of addresses: [tcp @ 0000018861faee80] Address 46.102.100.197 port 443 [tcp @ 0000018861faee80] Starting connection attempt to 46.102.100.197 port 443 [tcp @ 0000018861faee80] Successfully connected to 46.102.100.197 port 443 [https @ 000001885b2eb640] request: GET /enc111/kapitanbomba/kapitanbomba.mpd HTTP/1.1 User-Agent: Lavf/59.34.101 Accept: */* Connection: close Host: live001.cda.pl Icy-MetaData: 1 [AVIOContext @ 0000018862019d40] Statistics: 11719 bytes read, 0 seeks [dash @ 000001885b2ef1c0] DASH request for url 'https://live001.cda.pl/enc111/kapitanbomba/vi_1080_1668835006.mp4', offset 0 [https @ 0000018861e82440] Setting default whitelist 'http,https,tls,rtp,tcp,udp,crypto,httpproxy' [tcp @ 0000018861f17580] Original list of addresses: [tcp @ 0000018861f17580] Address 46.102.100.197 port 443 [tcp @ 0000018861f17580] Interleaved list of addresses: [tcp @ 0000018861f17580] Address 46.102.100.197 port 443 [tcp @ 0000018861f17580] Starting connection attempt to 46.102.100.197 port 443 [tcp @ 0000018861f17580] Successfully connected to 46.102.100.197 port 443 [https @ 0000018861e82440] request: GET /enc111/kapitanbomba/vi_1080_1668835006.mp4 HTTP/1.1 User-Agent: Lavf/59.34.101 Accept: */* Connection: close Host: live001.cda.pl Icy-MetaData: 1 [dash @ 000001885b2ef1c0] Downloading an initialization section of size 1656 [AVIOContext @ 000001886216c840] Statistics: 1656 bytes read, 0 seeks [dash @ 000001885b2ef1c0] DASH request for url 'https://live001.cda.pl/enc111/kapitanbomba/vs_1080_1668835006_2995380000.mp4', offset 0 [https @ 0000018861e82440] Setting default whitelist 'http,https,tls,rtp,tcp,udp,crypto,httpproxy' [tcp @ 0000018861f17580] Original list of addresses: [tcp @ 0000018861f17580] Address 46.102.100.197 port 443 [tcp @ 0000018861f17580] Interleaved list of addresses: [tcp @ 0000018861f17580] Address 46.102.100.197 port 443 [tcp @ 0000018861f17580] Starting connection attempt to 46.102.100.197 port 443 [tcp @ 0000018861f17580] Successfully connected to 46.102.100.197 port 443 [https @ 0000018861e82440] request: GET /enc111/kapitanbomba/vs_1080_1668835006_2995380000.mp4 HTTP/1.1 User-Agent: Lavf/59.34.101 Accept: */* Connection: close Host: live001.cda.pl Icy-MetaData: 1 [https @ 0000018861e82440] HTTP error 404 Not Foundq= 0B f=0/0 [dash @ 000001885b2ef1c0] Failed to open fragment of playlist [https @ 000001885b2eb080] Setting default whitelist 'http,https,tls,rtp,tcp,udp,crypto,httpproxy' [tcp @ 0000018861e82440] Original list of addresses: [tcp @ 0000018861e82440] Address 46.102.100.197 port 443 [tcp @ 0000018861e82440] Interleaved list of addresses: [tcp @ 0000018861e82440] Address 46.102.100.197 port 443 [tcp @ 0000018861e82440] Starting connection attempt to 46.102.100.197 port 443 [tcp @ 0000018861e82440] Successfully connected to 46.102.100.197 port 443 [https @ 000001885b2eb080] request: GET /enc111/kapitanbomba/kapitanbomba.mpd HTTP/1.1 User-Agent: Lavf/59.34.101 Accept: */* Connection: close Host: live001.cda.pl Icy-MetaData: 1
Real time example, ffplay tries to play, which fails
https://live001.cda.pl/enc111/kapitanbomba/vs_1080_1668835006_2995380000.mp4
at the same time browser gets, which works just fine
https://live001.cda.pl/enc111/kapitanbomba/vs_1080_1668835006_2992140000.mp4
Other application handles that case just fine, so I think its something that ffplay has to improve.
Change History (10)
comment:1 by , 2 years ago
| Description: | modified (diff) |
|---|
comment:3 by , 2 years ago
| Summary: | ffplay 404 when trying to play dash stream → ffmpeg/ffplay miscalculates $Time$, resulting in time from the future and 404 errors |
|---|
comment:4 by , 2 years ago
| Component: | ffplay → avformat |
|---|---|
| Keywords: | 404 added |
| Priority: | normal → critical |
comment:5 by , 2 years ago
| Keywords: | dash added; ffplay time offset 404 removed |
|---|---|
| Priority: | critical → normal |
comment:6 by , 2 years ago
as for today ffmpeg still cant do proper math and bug is still alive and well.
comment:8 by , 2 years ago
Replying to Harisfog:
I have same issue. any update?
Sadly, 4 weeks in and no traction or whatsoever, latest nightly build still has the bug.
follow-up: 10 comment:9 by , 2 years ago
Replying to Harisfog:
I have same issue. any update?
found decent file-less bug workaround for the time being, it should work for you too. It uses streamlink to grab segments and pipe them to ffmpeg. If stream is not DRM free you need to use forked version that adds DRM support. If you want to use it like ffplay then pipe it to ffplay or player of your choosing instead.
streamlink https://live002.cda.pl/enc117/2x2hd/2x2hd.mpd \
best \
--stream-segment-attempts 9999 \
--ffmpeg-dkey "<REDACTED>" \
-O|ffmpeg -nostdin -v fatal -hide_banner -nostats -re -i pipe:0 -c:v copy -c:a copy -f flv output"
This being said I consider it only workaround and still will wait for proper ffmpeg bugfix.
comment:10 by , 2 years ago
Replying to TheRadziu:
Replying to Harisfog:
I have same issue. any update?
found decent file-less bug workaround for the time being, it should work for you too. It uses streamlink to grab segments and pipe them to ffmpeg. If stream is not DRM free you need to use forked version that adds DRM support. If you want to use it like ffplay then pipe it to ffplay or player of your choosing instead.
streamlink https://live002.cda.pl/enc117/2x2hd/2x2hd.mpd \ best \ --stream-segment-attempts 9999 \ --ffmpeg-dkey "<REDACTED>" \ -O|ffmpeg -nostdin -v fatal -hide_banner -nostats -re -i pipe:0 -c:v copy -c:a copy -f flv output"This being said I consider it only workaround and still will wait for proper ffmpeg bugfix.
Thanks! This is helpful!
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Through a proxy i've determined the difference between what works (other unnamed app and browsers) and doesn't (ffplay,ffmpeg,ffprobe) is constant value of "-720000". Meaning the ffplay tries to grab a segment that does not exist yet.
I've been modifying the suggestedPresentationDelay and the segment difference was still -720000. This leads me to conclusion the bug within ffmpeg/ffplay/ffprobe (all are affected) ignores MPD values instead of adjusting segments to it. My solution proposals are: find and fix the bug or allow user to specify the segment offset with additional argument.