1687366 - did not decode the last couple of video samples for a specific file

Status: NEW

(Core :: Audio/Video: Playback, defect, P3)

Description

[Alastor Wu [:alwu]]

STR.

1. goto https://media.zlongame.com/media/upload/20210112/tdj_2021011201.mp4
2. set it loop

Expected.
3. when checking the progress bar, you can see that Firefox didn't decode the last couple samples, which make the looping have noticeable visual defect

Actual.
3. all video samples should be decoded and no visual defect occurs
(It played well on Chrome)

---

Here is the profiled result, you can see the last vdeio sample MDSM received is [1,766,667 : 1,800,000]

But when I use ffprobe to check the file, I do see there are still three video frames in the file.

{
    "codec_type": "video",
    "stream_index": 0,
    "pts": 57000,
    "pts_time": "1.900000",
    "dts": 54000,
    "dts_time": "1.800000",
    "duration": 1000,
    "duration_time": "0.033333",
    "size": "62640",
    "pos": "2549916",
    "flags": "__"
},
{
    "codec_type": "video",
    "stream_index": 0,
    "pts": 55000,
    "pts_time": "1.833333",
    "dts": 55000,
    "dts_time": "1.833333",
    "duration": 1000,
    "duration_time": "0.033333",
    "size": "26292",
    "pos": "2612556",
    "flags": "__"
},
{
    "codec_type": "video",
    "stream_index": 0,
    "pts": 56000,
    "pts_time": "1.866667",
    "dts": 56000,
    "dts_time": "1.866667",
    "duration": 1000,
    "duration_time": "0.033333",
    "size": "26816",
    "pos": "2638848",
    "flags": "__"
},